Contact assembly - Contact assembly series - Fuda alloy_万博manbetx官网app下载

Contact assembly product description

Application range

Contactors, relays, circuit breakers, switches, etc.

main products

AgZnO , AgSnO? , AgCdO , AgC , AgW , AgWC , AgNi .

Welding or riveting contact assembly of equal contact with copper alloy or copper。

product data Applications

Silver zinc oxide（AgZnO）

Overview: Silver zinc oxide has better resistance to soldering and burnout, and its contact resistance is higher than that of silver cadmium oxide. Silver zinc oxide can be produced by a pre-oxidation-sintering-extrusion, a mixing-molding-sintering process, and an internal oxidation process. Silver zinc oxide is an environmentally friendly material.

Applications: Mainly used for circuit breakers, especially universal circuit breakers. And for motor protection switches, leakage circuit breakers, AC relays.

Microstructure

2#AgZnO 200x 3#AgZnO 200x 6#AgZnO 200x

Material properties

Sheet	1#AgZnO	2#AgZnO	3#AgZnO	4#AgZnO	5#AgZnO	6#AgZnO
ZnO content (wt.%)	8±1	10±1	10±1	8±1	8±1	10±1
Density (g/cm³)	≥9.70	≥9.50	≥9.55	≥9.70	≥9.50	≥9.40
Resistivity (μΩ·cm)	≤2.50	≤2.50	≤3.50	≤3.40	≤2.60	≤2.70
Hardness	≥80	≥80	≥74	≥69	≥63	≥68
Manufacturing process	Pre-oxidation-sintering-extrusion		Internal oxidation		Mixed-molding-sintering

Wire	1#AgZnO	2#AgZnO
ZnO content (wt.%)	8±1	10±1
Density (g/cm³)	≥9.65	≥9.60
Resistivity(μΩ·cm)	≤2.25	≤2.35
Hardness	≥80	≥85
tensile strength(MPa)	285～350	285～350
Extension rate（%）	15-25	12-20
Manufacturing process	Pre-oxidation-sintering-extrusion

product type

	1#AgZnO	2#AgZnO	3#AgZnO	4#AgZnO	5#AgZnO	6#AgZnO
Wire	√	√	√	√
Strip	√	√
Touch piece	√	√	√	√	√	√
Composite sheet	√	√
Rivet	√	√	√	√

Silver tin oxide（AgSnO2）

Overview: Silver tin oxide is an environmentally friendly electrical contact material with good resistance to burning and fusion welding. It has strong resistance to material transfer in DC switching circuits and is widely used. Mainly include: alloy internal oxidation method, pre-oxidation method, powder metallurgy method, chemical coating method and other manufacturing processes.

Applications: Widely used in all types of contactors, relays, circuit breakers and switches.

Microstructure

1#AgSnO2 200X 8#AgSnO2 200X 9#AgSnO2 200X 16#AgSnO2 200X

16#AgSnO2 200X 37#AgSnO2 200X 40#AgSnO2 200X 88#AgSnO2 200X

Material properties

Sheet	1#AgSnO₂	8#AgSnO₂	12#AgSnO₂	37#AgSnO₂	40#AgSnO₂
SnO2 content (wt.%)	10±1	12±1	12±1	12±1	14±1
Density (g/cm³)	≥9.70	≥9.60	≥9.50	≥9.50	≥9.40
Resistivity(μΩ·cm)	≤2.40	≤2.80	≤2.50	≤2.80	≤2.90
Hardness	≥70	≥75	≥75	≥75	≥80
Manufacturing process	Pre-oxidation-sintering-extrusion		Mixing powder-sintering-extruding

Wire	1#AgSnO₂	9#AgSnO₂	91#AgSnO₂	23#AgSnO₂	13#AgSnO₂
SnO2 content(wt.%)	10±1	10±1	12±1	12±1	15±1
Density(g/cm³)	≥9.90	≥9.95	≥9.85	≥9.85	≥9.5
Resistivity (μΩ·cm)	≤2.15	≤2.30	≤2.30	≤2.30	≤2.18
Hardness	≥85	≥95	≥70	≥75	≥85
tensile strength(MPa)	295-350	290-385	230-350	230-285	250-330
Extension rate（%）	15-25	15-25	15-25	18-30	15-25
Manufacturing process	Pre-oxidation-sintering-extrusion			Chemical coating	Mixing powder-sintering-extruding

product type

	AgSnO₂				AgSnO₂In₂O₃
SnO2 content (wt.%)	8±1	10±1	12±1	15±1	6±1	8 ±1	9±1
Wire	√	√	√	√	√	√
Strip	√	√	√	√	√	√
Touch piece	√	√	√	√	√	√	√
Composite sheet	√	√	√	√
Rivet	√	√	√	√	√	√

Silver cadmium oxide（AgCdO）

Overview: Silver cadmium oxide is the most widely used contact material for low voltage electrical appliances. It has good resistance to arc burnout and fusion resistance and low contact resistance from start to finish during use. The production process includes pre-oxidation-sintering-extrusion and internal oxidation. Cadmium oxide content is about 10-20% by weight. However, cadmium and cadmium oxide are not good for health and the environment, and silver cadmium oxide materials are banned in some countries.

Applications: Mainly used in various low voltage switchgear. Such as micro switches, relays, lighting switches, contactors, household appliances switches, various protection switches and some circuit breakers.

Microstructure

3#AgCdO 200X 6#AgCdO 200X 10#AgCdO 200X 21#AgCdO 200X 27#AgCdO 200X 28#AgCdO 200X

Material properties

Wire	6#AgCdO	8#AgCdO	9#AgCdO	1#AgCdO	3#AgCdO	5#AgCdO	10#AgCdO
CdO content (wt.%)	10±1	13.5±1	15±1	10±1	12±1	15±1	17±1
Density(g/cm3)	≥10.05	≥9.95	≥9.90	≥10.10	≥10.05	≥9.95	≥9.80
Resistivity(μΩ·cm)	≤2.25	≤2.35	≤2.40	≤2.10	≤2.15	≤2.25	≤2.40
Hardness	≥70	≥75	≥75	≥70	≥70	≥75	≥75
tensile strength(MPa)	260-350	260-380	260-380	260-350	260-380	260-380	260-400
Extension rate（%）	6-20	6-20	6-20	8-25	8-25	8-25	5-25
Manufacturing process	Pre-oxidation-sintering-extrusion			Internal oxidation

product type

	6#AgCdO	7#AgCdO	8#AgCdO	9#AgCdO	1#AgCdO	3#AgCdO	5#AgCdO	10#AgCdO
Wire	√	√	√	√	√	√	√	√
Strip	√	√		√
Touch piece	√	√		√	√	√	√	√
Composite sheet		√		√		√
Rivet	√	√	√	√	√	√

Silver graphite（AgC）

Overview: Silver graphite has high resistance to soldering and low contact resistance. As the graphite content increases, its resistance to fusion increases. Silver graphite material has self-lubricating properties when used as a sliding contact.

Scope of application: Mainly used for protection switches, such as miniature circuit breaker MCB, molded case circuit breaker MCCB, leakage protection switch or motor protection switch, often forming asymmetric pairing contacts with AgNi, AgW, AgWC or Cu.

Microstructure

Material properties

	2#AgC	1#AgC	3#AgC	6#AgC	7#AgC	8#AgC
C content (wt.%)	3±0.5	4±0.5	5±0.5	3±0.5	3.8±0.5	4±0.5
Density (g/cm³)	≥9.10	≥8.9	≥8.60	≥9.10	≥9.00	≥8.9
Resist(μΩ·cm)	≤2.10	≤2.20	≤2.30	≤2.10	≤2.20	≤2.20
Hardness	≥42	≥42	≥42	≥42	≥42	≥42
Manufacturing process	Sintering-squeeze

product type

	2#AgC	1#AgC	3#AgC	6#AgC	7#AgC	8#AgC
Wire
Strip				√	√	√
Touch piece	√	√	√	√	√	√
Composite sheet
Rivet
Graphite fiber type	⊥			∥
Remarks	Note: 6#, 7#, 8#AgC strips and sheets can be coated with a layer of soldering material on the soldering surface, such as BAg15CuP

Silver tungsten（AgW）

Overview: Silver-tungsten contacts have high melting resistance and arc corrosion resistance due to their high melting point and high hardness. They also have good electrical and thermal conductivity.

Applications: Silver tungsten materials are mainly used for low-voltage molded case circuit breakers and universal circuit breakers and protection switches.

Microstructure

Material properties

	1#AgW	2#AgW	3#AgW	4#AgW	5#AgW	6#AgW
Ag content (wt.%)	50±2	45±2	40±2	35±2	30±2	25±2
Density(g/cm³)	≥13.15	≥13.55	≥14.00	≥14.50	≥14.90	≥15.40
Resistivity(μΩ·cm)	≤3.00	≤3.20	≤3.40	≤3.60	≤3.80	≤4.20
Hardness	≥100	≥110	≥120	≥130	≥145	≥160
Manufacturing process	Infiltration

product type

	1#AgW	2#AgW	3#AgW	4#AgW	5#AgW	6#AgW
Wire
Strip
Touch piece	√	√	√	√	√	√
Composite sheet
Rivet

Silver tungsten carbide graphite（AgWCC）

Overview: Silver tungsten carbide contact material with high melting point tungsten carbide has high hardness, low mechanical wear, low welding tendency and relatively stable contact resistance. Silver tungsten carbide contacts are produced by powder metallurgy infiltration.

Applications: Mainly used for high-load switching devices, such as circuit breakers, leakage switches. In many cases, it is used in asymmetric pairing with silver graphite.

Metallographic organization

Material properties

	6#AgWC	1#AgWC	5#AgWC	3#AgWC
Ag content t(wt.%)	65±2	60±2	50±2	35±2
Density (g/cm³)	≥11.50	≥11.80	≥12.20	≥13.00
Resistivity (μΩ·cm)	≤3.30	≤3.50	≤4.50	≤5.20
Hardness	≥100	≥125	≥135	≥155
Manufacturing process	Infiltration

product type

	6#AgWC	1#AgWC	5#AgWC	3#AgWC
Wire
Strip
Touch piece	√	√	√	√
Composite sheet
Rivet

Silver nickel（AgNi）

Overview: Silver nickel is more resistant to fusion and burnout than pure silver or fine grain silver. These two properties of the product are improved due to the increased nickel content of the high melting point. All silver-nickel materials are very workable and easy to solder. When the DC is turned on and off, the material transfer is small, and silver nickel is an environmentally friendly material.

Applications: Silver nickel products are widely used in low voltage switchgear. Such as relays, small current contactors, light switches, temperature controllers, protection switches (with asymmetric matching contacts with AgC, AgZnO, AgSnO2, etc.).

Microstructure

Material properties

Sheet	1#AgNi	3#AgNi	6#AgNi	8#AgNi	11#AgNi	12#AgNi
Nickel contentwt.%)	10±1	12±1	20±1	30±1	30±1	40±1
Density (g/cm³)	≥10.20	≥10.20	≥10.10	≥10.00	≥9.70	≥9.50
Resistivity (μΩ·cm)	≤2.30	≤2.50	≤2.40	≤2.50	≤2.70	≤3.40
Hardness HV	≥50	≥60	≥55	≥60	≥75	≥80
Manufacturing process	Sintering-squeeze				Mixed-molding-sintering

Wire	1#AgNi	3#AgNi	5#AgNi	25^#AgNi	6#AgNi	8#AgNi
Nickel content (wt.%)	10±1	12±1	15±1	15±1	20±1	30±1
Density(g/cm³)	≥10.25	≥10.20	≥10.15	≥10.15	≥10.05	≥9.80
Resistivity (μΩ·cm)	≤1.95	≤2.05	≤2.05	≤2.10	≤2.15	≤2.50
Hardness HV	≥75	≥70	≥80	≥80	≥80	≥80
tensile strength(MPa)	240-350	240-450	250-360	280-460	260-380	260-380
Extension rate（%）	5-30	5-30	5-30	5-28	2-28	2-25
Manufacturing process	Sintering-squeeze

product type

	1#AgNi	3#AgNi	5#AgNi	6#AgNi	8#AgNi	12#AgNi	25# AgNi
Wire	√	√	√	√	√		√
Strip	√	√	√	√	√		√
Touch piece	√	√	√	√	√	√	√
Composite sheet	√	√	√	√
Rivet	√	√	√	√	√		√

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