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Overview

“ Economical and Excellent Contact based on 30 years technical Power "

Contact is an electrical contacting element to open and close the circuit mechanically. It is used in all sectors of industry of eletromagnetic, communication equipments, high voltage distributing equipments, and elevators. e.g.each kind of switch relay. circuit breaker, So it is required of miniaturization, high performance, and sold confidence to all devlces that we devote curselves to meet customers' demands to guarantee them by equipping the advanced contact reliability (digital measurement of the life for automobiles and home relay).

Requirements in using Contact

  • 01Safety and low contact resistance
  • 02Good resistance to welding, and definite open/close
  • 03Excellent electrical conductivity and heat conductivity
  • 04Sure resistance to wear and no changeable to contact surface

Special Features and Merits of Contact by WooLimWorld Metal Ltd.

We are comprehensive contact manufacturing company to produce various types and shapes contacts customized to the demand of customers, from general Solid Type Contact to special product of high-tech Double Clad Contact, under perfect quality control based on 30 years experiences and technical cooperation with foreign company. Particularly, it surely satisfies your expectations that our complete guarantee for performance and continuous endeavors to develop more economical and high- powered contact.

Types - Rivet-Type Electrical Contact

Rivet-Type Electrical Contact

Rivet형 접점

Rivet-Type Electrical Contact Overview In recent, it requires the miniaturization, high performance, and solid confidence in rapidly changing electro-magnetic field. WooLimWorld Metal Ltd. will satisfy customers with perfect quality control from general Solid Type to Projection Type of special features of various Electrical Contact materials of AgCdO to environmental high-performance Cd-Free Electrical Contact.

Electrical Contact applied to home switch

스위치 사용예

Electrical Contact applied to car Powder RELAY

리레이 사용예

Rivet-Type Electrical Contact Classification by material

AgPd Group

Complete resistance against developing emulsion film. The best hardness and abrasion resistance in containing 40% silver, and used as a substitute for platinum.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Agpd
Group
AgPd30 Ag70Pd30
60
1225
11.5
10.9
0.11
Fuel gage For car
Telephone relay,
Signal(small D.C),
Commutator brush,
Thermostat (Small DC),
Industrial gage

Ag Group

High Conductivity and Thermal Conductivity than all other metals, no oxidation, low Electrical Contact resistance. Cannot be used when sulfur is contained in the air, which forming the thin film.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Ag Ag 99.99 26 960.5 106 10.5 1.0 Communication Electrical Contact
Thermostat
Micro Relay
Rotary Switch
Telephone
Mini Breaker
Home Switch

AgNi Group

AgNi alloy is a contact materials, which complementing the welding resistance and abrasion resistance of Ag and elevating the potential of processing.Since Ni not melt in Ag, it is manufactured by Power method, and the contents Ni is 5~20wt%.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgNi Group AgH
AgNi0.2
AgNi10
AgNi15
AgNi20
AgNi30
AgNi40
Ag99.97Ni0.03
Ag99.8NI0.2
Ag90Ni10
Ag85Ni15
Ag80Ni20
Ag70Ni30
Ag60Ni40
35
40
65
73
80
60
80
960.5
960.5
960.5
960.5
960.5
960.5
960.5
106
106
91
88
83
16
9
10.5
10.5
10.3
10.3
10.2
10.0
9.8
1.0
1.0
Wetting Electrical Contact for DC
Rotary Switch
Home Breaker
Circuit Switch

AgCu Group

Color resistance becomes decrease by the contents of copper, but hardness and mechanical abrasion resistance is increase. High Electrical Contacting power. Not use in case of Sliding Electrical Contact in operation.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgCu Group S97
AgCu10
AgCu20
AgCuNi0.5
AgCu40
Ag97Cu3
Ag90Cu10
Ag80Cu20
AgCu24.5Ni0.5
AgCu40
45
62
85
115
95

778
778
810
778
92
86
82
68
82
10.4
10.3
10.2
10.1
9.8

0.80
0.82
Rotary switch
Thermostat
Commutator Switch, Tuner, Relay,
Home Switch,Autometic Vending Machine

AgCdO Group

AgCdO Group is manufactured mainly with cadmium oxide silver. As a Electrical Contact, it has an excellent welding resistance and abrasion resistance, stable Electrical Contact resistance, good electric and thermal conductivity. Widely used in Electrical Contact for heavy current.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgCdO Group
(total
oxidation
process)
HE100
HE120
HE130
HE140S
HE181
Ag90CdO10
Ag88CdO12
Ag86.5CdO13.5
Ag85.3CdO14.7
Ag82.8CdO16+α
70
75
75
90
100
960.5
960.5
960.5
960.5
960.5
75
75
75
73
70
10.2
10.2
10.1
10.0
10.0
  Relay and Switch for AC
Home Breaker
Magnet Switch
No fuse Breaker
Motor Breaker
Heavy Duty Connector

AgSnO₂Group(Powder Process)

This materials are produced by dispersing SnO2 oxide in silver base using produced power method, excellent Conductivity, Arc resistance, welding resistance, and abrasion resistance.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgSnO2
Group
(Powder
Process)
HFE10S
HFE12S
Ag90Mox10
Ag88MOx12
80
90
960.5
960.5
90
85
10.0
9.9
  AC Switch & Relay
Home Breaker

AgSnO₂Group(Total oxidation Process)

Ag oxide-dispersion-strengthened alloy; heat stable SnO2 owing to its feature of material; micro-dispersion of SnO2 to Ag Matrix to give resistance to Arc, welding, and abrasion; total oxidation process. Particularly, it has excellent feature for relay and switch in the heavy duty area of DC.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgSnO2
Group
(total
oxidation
process)
HFE90
HFE120
Ag91MOx9
Ag88MOx12
110
115
960.5
960.5
73
70
10.0
9.9
  Car Relay and Switch
Breaker for Heavy Load
Power Switch
Magnet Switch

AgSnO₂In₂O₃Group

Cd-free material not brining about environmental problem; manufactured by internal oxidation which alloying with various additional elements to Ag-Sn alloy; very fine dispersion of oxide particles, which giving good welding / abrasion resistance; used in both AC and DC resistance.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgSnlnOx
Group
SJ06
SJ21
SJ23
SJ22P
SJ25P
SJ160
Ag90MOx10
Ag89MOx11
Ag87.5MOx12.5
Ag16.8MOx13.2
Ag85.5MOx14.5
Ag83.5MOx16.5
100
103
105
100
105
105
960.5
960.5
960.5
960.5
960.5
960
75
75
70
70
70
68
10.1
10.0
9.9
9.9
9.9
9.7
  Relay and Switch
for multi-use,
Magnet Switch,
AC Lamp, Motor, resistance
loads Circuit Breaker

W Group

In general, RiverElectrical Contact is used as a substitute (Fe, Cu). Very high hardness and strong welding and material transition. High Electrical Contact resistance, so not used in low-voltage circuit or low Electrical Contact capacity. Resistance to Arc. Used in both AC and DC load.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
W Group W 99.95 450 3410 31 19.3 0.397 Car Distributor,
Regulator Horn

Other-Pt Group

Pt

Suitable to be used in low Electrical Contact capacity and requiring critical reliability. No oxidation and no discoloration in any temperature.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Pt 99.99 40 1769 17 21.45 0.17 Telephone, Relay,
Advanced Measurement,
Railroad Ringer

Pt-Ir Group

High reducing power for Arc, and no change of Electrical Contact resistance. The more contents of Ir(Iridium), the more hardness of it, and no color change. Moving with high speed in big Electrical Contact power, and suitable for requiring high sensitivity.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Pt-Ir10
Pt-Ir30
Pt90-Ir10
Pt70-Ir30
126
285
1780
1885
7.0
5.3
21.6
21.8
0.074
0.037
Igniting generator,
High Vacuum condition
Relay, Governer for Micro Motor,
temperature controller,
Induction Controller, Alarm

Other-Au Group

Au

Its low resistance and high corrosion resistance prevents the surface discoloration or generating oxides even though it is plated over low-load Electrical Contact or wireless silver Electrical Contact.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Au 99.99 20 1063 71 19.3 0.7 Communication connector
Brush, Plug,
Commutator, Socket

Pt-Ir Group

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
A substitute for platinum in high-sensitivity device. Low electrical abrasion resistance.
Better welding resistance and hardness than Ag.
AuAg90
AuAg30
Au10Ag90
Au10Ag30
29
32
965
1025
48
16
11.0
16.6
0.47
0.16
Slip Ring Brush, DC Ringer,
Communication Breaker,
Switchboard,DC Ringer
Excellent corrosion resistance, low Electrical Contact resistance, long-durability, confidentiality.
Also called to PGS.
AuAgPt   60 1100 11.0 17.1 0.12 Strong Controller for
communication
Good corrosion resistance and mechanical property.
AuNi5 Au95Ni5 120 1020 12.9 18.3   Strong Electrical Contact
for communication
Alloy containing 62.5% of gold.
Manufactured to the state of line or substitute.
Resistant to Electrical Contact with impact, good springing property, and no change of color.
AuAgCu Au62.5
Ag30Cu7.5
165 861 12.0 13.7 0.13  

Other-Pd Group

Pd

Convenient material used as a substitute for platinum in proper conditions, but has a little weak resistance to electrical abrasion. Showing good Arc / oxidation / emulsification resistance.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Pd 99.99 40 1552 17 12.02 0.18 Telephone, RelayElectrical Contact,
Wireless controller Switch

AgPd Group

Perfect resistance to emulsion film generation. Showing the best hardness and abrasion resistance in containing 40% silver, and used as a substitute for platinum.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgPd30
AgPd40
AgPd50
AgPd60
AgPd70
Ag70Pd30
Ag60Pd40
Ag70Pd50
Ag80Pd60
Ag90Pd70
60
65
75
80
90
1225
1290
1350
1395
1430
11.5
8.2
5.7
4.3
4.3
10.9
11.1
11.2
11.4
11.5
0.11
0.1
0.06
0.07
Fuel gage For car
Telephone relay,
ringer,Commutator Brush
Themostat(Low DC),
Industrial measurement

Other-Ag Group

AgCdNi Group

Used as a substitute for copper-silver group; having better resistance to discoloration than copper-silver group but lesser Electrical Contact resistance.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgCdNi0.5 Ag97.6CdNi2.4 55 850 80 10.3 0.24 Voltage controller,
Strong voltage,
Thermostat, Switch,
Overload controlling Relay

AgIn Group

Holding non-lubricating property, and used for wetting Electrical Contact with relatively high Electrical Contact voltage.

WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgIn18 Ag82 In18 60 730   9.7   A-type Switchboard Wiper,
Rotary switch, Switch for low
& disturbance sound

Other-AgCdO Group

It is a Electrical Contact used by brazing to the substitute (Fe, Cu) of Rivet Electrical Contact, generally. It has good resistance to abrasion, breaking performance, Electrical Contact resistance, and stable for temperature elevation in high current area since other elements (Mox) are added to AgCdO.

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgCdO Group
(Post oxidation)
HE151
HE161
Ag83.4 MOx16.6
Ag81.3 MOx18.7
95
100
960.5
960.5
55
50
    High Load relay and switch
Chemical components are excluded from the Brazed Ag Clad layer. If it is used by welding to the shank made by copper, brass, and iron grouped when it is mounted the Plate-group Electrical Contact, it must be made to the state of having excellent welding capacity by attaching Ag to the site of welding since this process with CdO is very difficult.

Other-AgSnO₂InOx Group

It is a Electrical Contact used by brazing to the substitute (Fe, Cu) of Rivet Electrical Contact, generally. This is a material with very finely dispersed oxide particles compared to the existing AgCdO Group PlateElectrical Contact, and has good durability and particularly initial welding resistance. But, it is a little lesser performance in elevating temperature than that of AgCdO, therefore this is widely used in 80A~600A of electrical switch.

 

Material WooLimWorld
-
Product
Name
Composi
tion
(wt%)
Hardness
(annealing
Hv)
Melting
Point℃
(solid)
Electric
Conduct
(%IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgSnO2lnOx Group
(Post oxidation)
SJ04 Ag85.2MOx14.8 120 960.5 60     High Load relay
and switch
Chemical components are excluded from the Brazed Ag Clad layer. If it is used by welding to the shank made by copper, brass, and iron grouped when it is mounted the Plate-group Electrical Contact, it must be made to the state of having excellent welding capacity by attaching Ag to the site of welding since this process with CdO is very difficult.

Rivet-Type Electrical Contact : Advantages

  • 01Relatively easy riveting.
  • 02Sufficiently strong and stable the adhesive power by the Electrical Contact riveting used in low voltage current area.
  • 03No loss of Spring feature and no acidify due to no heating.

Rivet-Type Electrical Contact : Shape and Usage

Generally used single metal Electrical Contact.
Complex Electrical Contact saving materials of Solid Electrical Contact with considering economics.
A Electrical Contact riveted to a fragile material such as bakelite.
Use with F Electrical Contact when Electrical Contact resistance is essential. Electrical Contact failure by corrosion prevention effect (mainly Au-coating).
Make easy insertion into the terminal hole in automatic riveting Line.

Types - Plate-Type Electrical Contact

Plate-Type Electrical Contact Overview

Plate형 접점

Used in Electromagnetic Contractor, Heavy Duty MCCB, CCB, No Fuse Breaker, ACB, GCB, and etc.; its materials are AgCdO Group and AgSnInOx Group, Ag-W, Cu-W, Ag-WC, and others; shapes are circle, square, and other special types.

Plate Electrical Contact Application to MCCB

배선용차단기 사용예

Plate-Type Electrical Contact Classification by Material

AgCdO Group

It has good resistance to abrasion, breaking performance, Electrical Contact resistance, and stable for temperature elevation in high current area since other elements (MOx) are added to AgCdO.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Application
HE100A Ag90 MOx10 80 960.5 80 Low-load electric switch
HE141
HE151
HE161
Ag85.2 MOx14.8
Ag83.4 MOx16.6
Ag81.3 MOx18.7
85
95
100
960.5
960.5
960.5
60
55
50
MCCB
Electromagnetic Contractor
Current Limiter
Heavy Duty Connector
Chemical components are excluded from the Brazed Ag Clad layer. If it is used by welding to the shank made by copper, brass, and iron grouped when it is mounted the Plate-group Electrical Contact, it must be made to the state of having excellent welding capacity by attaching Ag to the site of welding since this process with CdO is very difficult.

AgSnOInOx Group

It is a Electrical Contact used by brazing to the substitute (Fe, Cu) of River Electrical Contact, generally. This is a material with very finely dispersed oxide particles compared to the existing AgCdO Group PlateElectrical Contact, and has good durability and particularly initial welding resistance. But, it is a little lesser performance in elevating temperature than that of AgCdO, therefore this is widely used in 80A~600A of electrical switch.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Application
SJ04 Ag85.2MOx14.8 120 960.5 52 MCCB,
electrical switch
SJ06 Ag90MOx10 100 960.5 75 MCCB,
electrical switch
Chemical components are excluded from the Brazed Ag Clad layer. If it is used by welding to the shank made by copper, brass, and iron grouped when it is mounted the Plate-group Electrical Contact, it must be made to the state of having excellent welding capacity by attaching Ag to the site of welding since this process with CdO is very difficult.

Ag-W Group

It is the one integrating the low Electrical Contact resistance and high conductivity of silver and the hardness and excellent resistance to Arc and abrasion of tungsten. Showing advantages of Arc resistance and welding resistance in high current.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
S27B2
S30A2
S50A2
S60A2
Ag81.3W+α18.7
Ag30W70
Ag50W50
Ag60W40
B:98
B:98
B:98
B:98
960.5
960.5
960.5
960.5
51
51
68
72
15.5
15.3
13.5
12.8
  Air circuit breaker,
Electrical Contactor
for heavy duty,
Electrode for EDM

Cu-W Group

It has welding resistance and Arc resistance due to its low consumability. It also shows similar features with Ag-W Group but has lesser Electrical Contact resistance and re-oxidation capacity than Ag-W Group, and used in oil.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
C20A2
C30A2
C40A2
Cu20W80
Cu30W70
Cu40W60
B:103
B:93
B:88
1083
1083
1083
40
48
53
15.6
14.2
13.1
  Heavy Duty oil breaker,
Transformer Tap Spot,
Electrode for EDM,
High-Voltage Gasbreaker

Ag-WC Group

A Electrical Contact material composed of WC holding excellent oxidation resistance and high hardness and Ag holding the high conductivity. It has high performance in low-conductivity high current since its low change of Electrical Contact resistance and good welding resistance.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
HS-02X
HS-01
HS-2
HS-1
HD-85
Ag30WC+α70
Ag40WC+α60
Ag60WC40
Ag50WC50
Ag85WC+α15
F:120
F:115 F:98
F:108
F:40
960.5
960.5
960.5
960.5
960.5
30
35
58
45
58
13.5
12.8
12.0
12.3
9.4
  MCCB,
Heavy Duty Air circuit breaker,
each kind of car Heavy
DutyElectrical Contact,
Heavy Duty Electrical Contactor

AgNi Group

AgNi alloy is a Electrical Contact, which complementing the welding resistance and abrasion resistance of Ag and elevating the potential of processing. Since Ni is not employed in Ag, it is manufactured by Power Metallurgy Process, and the contents Ni is 5~20wt%.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
압연공법
압출공법
소결공법
AgNi30
AgNi40
소결공법AgNi30
소결공법AgNi40
Ag70Ni30
Ag60Ni40
Ag70Ni30
Ag60Ni40
60
80
70
80
960.5
960.5
960.5
960.5
16
9
17
9
10.0
9.8
10.0
9.8
Circuit breaker Switch
Relay
Push-button

Types - Electrical Contact Material Wire

Electrical Contact Material Wire Overview

접점용 소재 Wire의 개요

Our Electrical Contact materials have materialized the customer satisfaction by providing good processing and high-fidelity materials through continuous development of NEW MATERIAL based on 30 years KNOW-HOW.


Electrical Contact Material Wire Classification by Material

Pt Group

Pt Group

Suitable to be used in low Electrical Contact capacity and requiring critical fidelity. No oxidation and no discoloration in any temperature.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Pt 99.99 40 1769 17 21.45 0.17 Telephone, Relay,
Advanced Measurement,
Railroad Ringer

Pt-Ir Group

High reducing power for Arc, and no change of Electrical Contact resistance. The more contents of Lr, the more hardness of it, and no color change. Moving with high speed in big Electrical Contact power, and suitable for requiring high sensitivity.

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-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Pt-Ir10
Pt-Ir30
Pt90-Ir10
Pt70-Ir30
126
285
1780
1885
7.0
5.3
21.6
21.8
0.074
0.037
Igniting generator,
High Vacuum condition
Relay, Governer for Micro Motor,
temperature controller,
Induction Controller, Alarm

AgCu Group

Its property of discolor resistance are decreased by the contents of copper, but its hardness and mechanical abrasion resistance are increased. It has high Electrical Contact capacity and may not used if there is Sliding Electrical Contact in operating.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
S97
AgCu10
AgCu20
AgCuNi0.5
AgCu40
Ag97Cu3
Ag90Cu10
Ag80Cu20
AgCu24.5Ni0.5
AgCu40
45
62
85
115
95

778
778
810
778
92
86
82
68
82
10.4
10.3
10.2
10.1
9.8

0.80
0.82
Rotary switch
Thermostat
Commutator Switch,
Tuner, Relay,
Home Switch,
Vending Machine

Au Group

Au

Its low resistance and high corrosion resistance prevents the surface discoloration or generating oxides even though it is plated over low-load Electrical Contact or wireless silver Electrical Contact.

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-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Au 99.99 20 1063 71 19.3 0.7 Communication connector
Brush, Plug, Commutator
Socket

Au Group

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
A substitute for platinum in high-sensitivity device. Low electrical abrasion resistance.
Better welding resistance and hardness than Ag.
AuAg90
AuAg30
Au10Ag90
Au10Ag30
29
32
965
1025
48
16
11.0
16.6
0.47
0.16
Slip Ring Brush, DC Ringer,
Communication Breaker,
Switchboard,DC Ringer
Excellent corrosion resistance, low Electrical Contact resistance, long-durability, confidentiality.
Also called to PGS.
AuAgPt   60 1100 11.0 17.1 0.12 Strong Controller for
communication
Good corrosion resistance and mechanical property.
AuNi5 Au95Ni5 120 1020 12.9 18.3   Strong Electrical Contact
for communication
Alloy containing 62.5% of gold. Manufactured to the state of line or substitute.
Resistant to Electrical Contact with impact, good springing property, and no change of color.
AuAgCu Au62.5
Ag30Cu7.5
165 861 12.0 13.7 0.13  

AgCdO Group

AgCdO Group is manufactured mainly with cadmium oxide silver. As a Electrical Contact, it has an excellent welding resistance and abrasion resistance, stable Electrical Contact resistance, good electric and thermal conductivity. Widely used in Electrical Contact for heavy current.

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Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
HE100
HE120
HE130
HE140S
HE181
Ag90CdO10
Ag88CdO12
Ag86.5CdO13.5
Ag85.3CdO14.7
Ag82.8CdO16+α
70
75
75
90
100
960.5
960.5
960.5
960.5
960.5
75
75
75
73
70
10.2
10.2
10.1
10.0
10.0
  Relay and Switch for AC
Home Breaker
Magnet Switch
No fuse Breaker
Motor Breaker
Heavy Duty Connector

Pd Group

Pd Group

Convenient material used as a substitute for platinum in proper conditions, but has a little weak resistance to electrical abrasion. Showing good Arc / oxidation / emulsification resistance.

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-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Au 99.99 20 1063 71 19.3 0.7 Telephone,
RelayElectrical Contact,
Wireless controller Switch

AgPd Group

Perfect resistance to emulsion film generation. Showing the best hardness and abrasion resistance in containing 40% silver, and used as a substitute for platinum.

Material WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgSnO2 Group
(Powder
Process)
AgPd30
AgPd40
AgPd50
AgPd60
AgPd70
Ag70Pd30
Ag60Pd40
Ag70Pd50
Ag80Pd60
Ag90Pd70
60
65
75
80
90
1225
1290
1350
1395
1430
11.5
8.2
5.7
4.3
4.3
10.9
11.1
11.2
11.4
11.5
0.11
0.1
0.06
0.07
Fuel gage For car
Telephone speedometer
sealing material, ringer,
Commutator Brush Themostat (MINI DC),
Industrial measurement

AgSnO₂Group(Cd Free)

AgSnO₂Group(Powder Process)

Dispersed material of SnO2 oxide by Powder Metallurgy Process, excellent Conductivity, Arc resistance, welding resistance, and abrasion resistance.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
HFE10S
HFE12S
Ag90Mox10
Ag88MOx12
80
90
960.5
960.5
90
85
10.0
9.9
  AC Switch & Relay
Home Breaker

AgSnO₂Group(total oxidation process)

Ag oxide-dispersion-strengthened alloy; heat stable SnO2 owing to its feature of material; micro-dispersion of SnO2 to Ag Matrix to give resistance to Arc, welding, and abrasion; total oxidation process. Particularly, it has excellent feature for relay and switch in the heavy duty area of DC.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
HFE90
HFE120
Ag91MOx9
Ag88MOx12
110
115
960.5
960.5
73
70
10.0
9.9
  Car Relay and Switch
Breaker for Heavy Duty
Power Switch
Magnet Switch

AgGroup

High Conductivity and Thermal Conductivity than all other metals, no oxidation, low Electrical Contact resistance. Cannot be used when sulfur is contained, which forming the thin film in the air.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
Ag 99.99 26 960.5 106 10.5 1.0 Communication contact
Thermostat, Micro Relay
Rotary Switch, Telephone
Mini Breaker,
Home Switch

AgSnO₂InOx Group(Cd Free)

Cd-free material not brining about environmental problem; manufactured by internal oxidation which alloying with various additional elements to Ag-Sn alloy; very fine dispersion of oxide particles, which giving good welding / abrasion resistance; used in both AC and DC resistance.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
SJ06
SJ21
SJ23
SJ22P
SJ25P
Ag90MOx10
Ag89MOx11
Ag87.5MOx12.5
Ag16.8MOx13.2
Ag85.5MOx14.5
100
103
105
100
105
960.5
960.5
960.5
960.5
960.5
75
75
70
70
70
10.1
10.0
9.9
9.9
9.9
  Multipurpose Relay
Magnet Switch,
AC Lamp, Motor, resistance
loads MCCB

AgNi Group

AgNi alloy is a Electrical Contact, which complementing the welding resistance and abrasion resistance of Ag and elevating the potential of processing. Since Ni is not employed in Ag, it is manufactured by Power Metallurgy Process, and the contents Ni is 5~20wt%.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgH
AgNi0.2
AgNi10
AgNi15
AgNi20
AgNi30
AgNi40
Ag99.97Ni0.03
Ag99.8NI0.2
Ag90Ni10
Ag85Ni15
Ag80Ni20
Ag70Ni30
Ag60Ni40
35
40
65
73
80
60
80
960.5
960.5
960.5
960.5
960.5
960.5
960.5
106
106
91
88
83
16
9
10.5
10.5
10.3
10.3
10.2
10.0
9.8
1.0
1.0
Wetting Electrical
Contact for DC,
Rotary Switch
Home Breaker,
Home Wiring Switch

Other

AgCdNi Group

Used as a substitute for copper-silver group; having better resistance to discoloration than copper-silver group but lesser Electrical Contact resistance.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgCdNi0.5 Ag97.6CdNi2.4 55 850 80 10.3 0.24 Voltage controller,
Strong voltage,
Thermostat, Switch,
Overload controlling Relay

AgIn Group

Holding non-lubricating property, and used for wetting Electrical Contact with relatively high Electrical Contact voltage.

WooLimWorld
-
Product
Name
Composition
(wt%)
Hardness
(annealing
Hv)
Melting
Point ℃
(solid)
Electric
Conduct
(% IACS)
Conduct
Gravity
(g/㎠)
Thermal
Conductivity
(Cal/Cm,
sec,℃)
Application
AgIn18 Ag82 In18 60 730   9.7   AA-type Switchboard Wiper,
Rotary switch,
Switch for low &
disturbance sound

Dimension - Standard Dimension

Select right box to see the detailed dimension for its type
Solid Type 표준규격
NO D±0.1
(㎜)
T±0.05
(㎜)
d±0.05
(㎜)
L±0.1
(㎜)
F R
1 2.0 0.5 1.2 1.5 F 3R
2 2.0 0.6 1.2 1.5 F 3R
3 2.5 0.8 1.5 1.5 F 3R
4 3.0 0.8 1.5 1.5 F 8R
5 3.0 1.0 1.5 1.5 F 8R
6 3.5 0.8 2.0 2.0 F 10R
7 3.5 1.0 2.0 2.0 F 10R
8 4.0 1.0 2.0 2.0 F 10R
9 4.0 1.2 2.0 2.0 F 10R
10 4.5 1.0 2.5 2.5 F 15R
11 4.5 1.2 2.5 2.5 F 15R
12 5.0 1.2 2.5 2.5 F 20R
13 6.0 1.5 3.0 3.0 F 20R
Clad Type 표준규격
D±0.1
(㎜)
T±0.05
(㎜)
00.1
(㎜)
L±0.1
(㎜)
t
(㎜)
d C F R
2.4 0.7 1.2 1.0 0.35 - - F 3R
3.0 1.0 1.5 2.0 0.4
0.45
- - F 8R
3.5 1.0 1.8 2.0 0.4
0.55
- - F 10R
4.0 1.0 2.0 2.0 0.5 - - F 10R
5.0 1.0 2.5   0.55 - - F 20R
4.0 1.0 1.9 1.8 0.45 1.6 0.8 F 10R
4.5 1.0 2.5 1.8   2.2 0.3 F 10R
5.0 1.0 2.5 - 0.55 2.1 0.8 F 20R
Button Type 표준규격

Button Tupe Electrical Contact is a complex Electrical Contact alloying Cu or Cu-alloyed basal material with proper size and shape, and used by welding to the material for Spring or Bimetal.

NO D
(㎜)
T
(㎜)
d
(㎜)
t
(㎜)
θ F R
1 3.0 1.0 1.5 0.4 0.2 12° F 5A
2 4.0 1.0 2.0 0.4 0.2 12° F 10A
3 5.0 1.2 2.5 0.5 0.2 12° F 15A
4 6.0 1.5 3.0 0.5 0.2 12° F 20A
미소접점 표준규격

It is mainly used in Governor Electrical Contact for Micro Motor which requiring microcurrent.It is used platinum-group materials of P,G,S, G.S, Au-Ni, Pd-Ru, Ag-Pd, and Pt-Ir.


It is used for the material of Plate-Type electrical contact that Ag-Cdo, Ag-W, and Ag-WC.It is relatively small sized, and there are many types with various shapes of round plate, square plate, and other special type. In case of processing method, it is welded by electrical resistance welding or Spot welding using Silver Solder.

Plate Type 표준규격

Dimension - Material Selection

Dimensional Selection

Electrical Contact Material & Applicable Load

접점재료와 적용부하

The properties of Electrical Contact may be changed by the complex factors of material, surface condition, interval, current, contact pressure, operation number per unit time, operating environment, and the structure of component. Therefore it must be selected proper material and dimension by considering application field (load type) in designing, rated voltage, rated current, and inrush current though it is very difficult to select the Electrical Contact.

Application Applicable Load Recommended Material
Car (DC) Head Lamp HFE Group, SJ Group
Flasher Lamp HFE Group, Pd Group
Resistance Load AgCu Group, HFE Group, SJ Group
Motor Load HFE Group, SJ Group
Magnet Clutch HFE Group, SJ Group
Home (AC) Resistance Load Ag Group, AgCdO Group, AgNi Group, HFE Group, SJ Group
Motor Load AgCdO Group, HFE Group, SJ Group
Lamp Load AgCdO Group, HFE Group, SJ Group

Dimension - Dimensional Selection

Dimensional Selection

Example for the Standard Area of Electrical Contact by applied Current


(amp)

(amp)

(amp)
Electrical
Contact
Thickness
(mm)
Area
(㎠)
Electrical Contact
Wide X Long
(mm)
3 5   1.0 0.03 1x3
8 15     0.14 3.5x4
20 20   1.5 0.3 5x6
35 50     0.5 7x7
50       0.8 9x9
100 100 50 2.0 1.2 8x15
125       1.5 10x15
150 200 100   2.0 10x20
175     2.5 2.5 15x17
200 300     3.0 15x21
225       3.8 15x19
250 400 200 30이상 4.5 20x22
275       5.3 25x26
300   250   6.2 25x25
350       7.0 25x28
    300   8.0 25x32
400       9.0 25x36
        10.0 25x40
600       11.5 30x37
800       12.5 30x42
        14.0 30x46
1000

1200
1500
      15.0
16.5
18.0
20.0
30x50
30x55
30x60
30x55
  • ① : For Electric Relay and Contactor
  • ② : For Breaker
  • ③ : For Oil-filled Equipment
  • - Decrease the area when it has high contact capacity compared to normal condition
  • - Must give R toward the direction of Arc when current is over than 100A
  • - For DC current, it must be increased 20% of the above

Standard for selecting the proper head diameter of standard electrical contact under light-load and heavy curreat

경부하 및 중전류용 접점의 전류에 표준접점 두경 선택 기준

The Relationship between rated current and electrical contact dimension

정격전류와 점점규격의 관계

Dimension - Plate Electrical Contact Selection

Plate Electrical Contact Selection

MCCB

Frame Current Application Using Electrical Contact
< 50A Main, Arcing HE141, HE151, HE161
(HS2, HD85)
20-225A Main, Arcing HE141, HE151, HE161,
HS2, HD85
225-800A Main, Arcing HE141, HE151, HE161,
HS2, HD85
> 800A Main, Arcing
Main
Arcing
HS2, HD85
HS2, HD85
S27B2, S30A2

Common Breaker

Frame Current Application Using Electrical Contact
< 50A Main, Arcing HE141, HE151, HE161
(HS2, HD85)
20-225A Main, Arcing HE141, HE151, HE161,
HS2, HD85
225-800A Main, Arcing HE141, HE151, HE161,
HS2, HD85
> 800A Main, Arcing
Main
Arcing
HS2, HD85
HS2, HD85
S27B2, S30A2

Processing

Electrical Contact : Processing

접점의 제품공정

Tech.Data - Reliability Control/Material Control

Reliability Control

접점의 신뢰성 관리

Now you can select more reliable Electrical Contact since it is possible to digitally check all problems such as MISCONTACT in running and the durability of car and home relay. We periodically evaluate the quality of material for Electrical Contact produced in our company and CHECK the advancement of quality according to the improvement of processing in the position of customer.


Material Control

You can select suitable and reliable material corresponding to your needs by stable feature control through the physical property test by production LOT and organization.

재질 관리

Tech.Data - Surface Forgign Body Control

Surface Forgign Body Control

접점표면 이물관리

Electric Contact Surface Foreign Body Control
When foreign body is attached in surface by the careless storage or usage of Electrical contact, it generates surface thin film to give aries to incuease of contact resistance or failure of electrical transmission, which may be critcal fault for Electrical Contact. Therefore, we prevent these causes of foreign body attachment beforehand by equipping pollution pre-venting system for each production process and CLEAN ROOM system for inspection and packaging stages.

EPMA ANALYSIS DATA

EPMA에 의한 분석 DATA

Tech.Data - Caution

Reveting Caution

Reveting 주의사항
  • It is recommended to maintain the space to 0.03~0.1 between Electrical Contact and a mold for Riveting. Depth of casting = [ Low limit of head height for Electrical Contact - (0.03∼0.1) ].The space calculated by the above equation may prevent the detachment of electrical contact and crushing in riveting. If it is detached in riveting, it may be the main cause of temperature elevation and contact resistance failure due to heat generation.
  • It must be checked whether the side angle between electrical contact and casting to make precise settlement of electrical contact without shaking.
  • The intensity of illumination for the casting floor will be directly reflected to the surface of electrical contact in time of riveting, so it should be prepared the standard for the amount of working and the lapping period for casting.
  • Unfitted corner may cause transformation and crack in Electrical Contact.
  • It should be designed and managed that the hole size of casting (Spring) is to be larger than the foot diameter of electrical contact as such +0.1.

Tech.Data - Failure Example

Example for Rivet Failure

Example1

It was estimated the riveting condition for the Thermostat made by K company with deposition in time of durability test. It had the serious detachment between electrical contact and substitute terminal, so it caused the temperature elevation.

Reveting 불량사례1

Example2

There is also detachment in inspection for the fixing/operating electrical contact of breaker made by L company.

Reveting 불량사례2
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TechnoPark 102402, SamJakRo 22, OJeongGu, BuCheonSi, KyungGiDo, 421740, KOREA
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