Silver Tungsten

Silver Tungsten


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Ningbo De-Shin offers a full range of silver tungsten for different industrial application fields. It takes the advanced vacuum infiltration process and all products meet the criterion of GB/T8320-2003, ASTM B631.

Production process: powder mix –> pressing –> sintering –> vacuum infiltration –> machining –> QC. All this production process is strictly controlled by QC to ensure best quality performance.

Advantages:

1. High electrical conductivity.

2. High thermal conductivity.

3. High density with perfect uniformity microstruction of material.

Applications:

1. Circuit breakers.

2. Earth leakage breakers.

3. Miniature circuit breakers.

4. resistance welding electrode.

5. wear resistance shaft

Stock size:

Silver tungsten rod: diameter≥0.5mm, usually 1-60mm; length≤300mm, usually 100, 175, 200, 300mm.

Silver tungsten square bar: thickness≥1.0mm, usually 1-40mm; length & width≤400mm, usually 100*200, 200*300, 200*400mm.

 

grade Chemical Composition (wt%) Density Hardness Resistivity
Ag Total Impurities≤  W g/cm3  ≥  HB Kgf/mm2 ≥ μΩ.cm  ≤
W30/Ag70 70±1.5 0.5  Balance 11.75 75 2.3
W40/Ag60 60±1.5 0.5  Balance 12.40  85 2.6
W50/Ag50 50±2.0 0.5  Balance 13.15 105 3.0 
W55/Ag45  45±2.0 0.5  Balance 13.55  115 3.2
W60/Ag40 40±2.0 0.5  Balance 14.00  125 3.4
W65/Ag35 35±2.0 0.5  Balance 14.50  135 3.6
W70/Ag30 30±2.0 0.5  Balance 14.90  150 3.8 
W75/Ag25 25±2.0 0.5  Balance 15.40  165 4.2 
W80/Ag20  20±2.0 0.5  Balance 16.10  180 4.6 
W85/Ag15 15±2.0 0.5  Balance 16.70  195 5.0 

 


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