POSITION : HOME > PRODUCT > Other Metallic Composites >

Electrical Bimetal Contact rivets
Our electrical contact rivets include bimetal contact rivets and three-layer contact rivets . According to their shapes, they are divided into two types: platform and round heads. The main specifications are as follows:
three layer electrical contact rivets
Silver-iron/copper contact rivets : CAgE7/Cu, which has good electrical and thermal conductivity, non-toxic, wear-resistant, strong breaking capacity and low temperature rise. Its service life can be doubled compared to silver contacts of the same specification. It is a better contact material for electrical appliances with frequent opening and closing below 40A. It is mainly used for contacts of AC contactors below 40A and household appliance contacts.
Silver-copper/copper contact rivets : CAgCu10/Cu, CAgCu20/Cu, which have high hardness and good wear resistance, and are mainly used in electrical appliances with sliding friction when the contacts are opened and closed. For example: transportation electrical starting transfer switches, push button switches and household appliances.
bimetal contact rivets
Silver cadmium oxide/copper contacts rivets : AgCdo10Cu, AgCdo15/Cu, AgCdo12/Cu, which have the advantages of arc corrosion resistance, wear resistance, strong breaking capacity, high hardness, etc., and are currently widely used silver cadmium oxide integral contacts. Silver substitute materials are mainly used in contact materials for low-voltage electrical appliances above 25A and special purposes. For example; the power switch of the TV, etc.
Silver tin oxide/copper contacts rivets : AgSnO2/Cu, in addition to having similar properties to silver cadmium oxide contacts, it is also non-toxic and is a new contact material currently being vigorously researched and developed at home and abroad. It can partially replace silver cadmium oxide contacts and is used in medium and small capacity low-voltage electrical appliances and many types of household appliances. It can further reduce the size and save silver. Its application scope remains to be developed and researched.

electrical contact rivets

Bimetal electrical contact rivets parameter

Name Specification Allowable deviation
Head diameter Φ2.5-Φ8.0 ±0.1
Head thickness 0.6-3.0 ±0.05
Tail diameter Φ1.0-Φ5.0 -0.01
Tail length 0.5-5.0 +0.15
Silwer layer thickness About 1/2T S≤0.4 +0.06
S>0.4 -0.06
Round head diameter 4.0-25.0 Sr≤10 ±1
SR>10 ±2

Bimetal contact rivets Standard size parameters

Name D T d L S1 S2 SR
1 3.3 0.8 2.0 1.4 0.35 0.65 5
2 3.3 0.9 2.0 1.5 0.2 0.65 5
3 3.3 0.6 2.0 2.4 0.3 0.65 8
4 3.8 1.0 3.2 1.6 0.5 0.4 10
5 3.8 0.75 3.2 1.2 0.35 0.4 12
6 4.0 1.0 2.5 2.5 0.4 0.95 10
7 4.5 0.8 3.5 1.2 0.3 0.3 12
8 4.5 1.0 3.05 1.55 0.3 0.2 12
9 5.0 0.8 3.0 1.0 0.3 0.2 10
10 6.0 1.3 3.1 2.4 0.5 0.8 12
bimetal silver contact rivets drawing

Three layer electrical contact rivets parameter

Name Specification Allowable deviation
Head diameter Φ1.5-Φ10 ±0.1
Head thickness 0.8-1.3 ±0.05
Tail diameter Φ2.0-Φ4.0 -0.1
Tail length 1.0-2.5 ±0.1
Head silver thickness 0.3-0.5 -0.1
Tail silver thickness 0.3-0.8 ±0.1
Round head diameter 5.0-20.0 ±25%SR

three layer electrical contact rivets drawing

Standards for bimetal contact rivets

Item D(mm) T(mm) S(mm) SR(mm) L(mm) d(mm) Axiality(mm) composite strength
Tolerance ±0.1 ±0.05 S≤0.4 S>0.4 SR≤10 SR>10 +0.15
Head diameter ≥98Mpa
+0.06 ±1 ±2 2.5-3 >3-6 >6-8
1.12 0.15 0.20

Application of electrical contact rivets

It is widely used in the entire field of electrical switches, such as AC contactors, relays, power tool switches, buttons, timers, household appliances, etc.

application of silver alloy electrical contacts

Advantages of our electrical contact rivets

Excellent material : stable quality, durable and long service life.
Fine workmanship : beautiful, compact, and good conductivity.
Good electrical conductivity : The surface is not easily oxidized. When copper is added, the burning resistance of silver can be significantly improved. Therefore, copper-incorporated Bimetal contact rivets can be applied to current strengths up to 16A. Because of the addition of copper, especially the higher copper content When it is high, it can reduce the material transfer phenomenon under DC working conditions.
silver contact rivets

Features of electrical contact rivets

Bimetal contact rivets offer several features that make them suitable for specific applications, particularly in electrical and electronic devices. Here are some key features of bimetal contact rivets:
Corrosion Resistance : Depending on the specific alloys used, bimetal contact rivets exhibit corrosion resistance. This is particularly important in applications where the environment may expose the contacts to moisture or other corrosive elements.
Contact Consistency : Bimetal contact rivets are designed to maintain consistent electrical contact over their lifespan. This reliability is crucial in applications where intermittent or unreliable connections could lead to malfunctions or safety issues.
Adaptability to Design Requirements : Bimetal contact rivets can be manufactured in various shapes and sizes to meet the specific design requirements of different electrical devices. This adaptability makes them suitable for a wide range of applications.
Compliance with Standards : Bimetal contact rivets are often engineered to meet industry standards and specifications related to electrical performance, safety, and durability. This ensures that devices incorporating these rivets adhere to established norms.
Ease of Manufacturing : The manufacturing process for bimetal contact rivets is well-established and can be efficiently carried out. This contributes to cost-effectiveness and makes these rivets accessible for use in mass-produced electrical devices.
Long Service Life : The combination of high electrical conductivity, mechanical strength, wear resistance, and other properties contributes to a long service life for bimetal contact rivets. This is crucial in applications where frequent maintenance or replacement is impractical.
Environmental Considerations : bimetal contact rivets may be designed with environmental considerations in mind, incorporating materials that are recyclable or environmentally friendly.
* Product :

* Name :

* E-mail :

Phone :

* Message :