Tungsten copper electrical contacts are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Our tungsten-Copper materials are used owing to their unique physical properties.
 
Advantages: without other element except Tungsten and Copper, uniform material, low content of gas and impurity, very high burn-off resistance, excellent thermal and electrical conductivity, all necessary joining and machining processes.
Typical properties electrical of W-Cu
Type |
Density(g/cm3) |
HB(MPa) |
Electrical
Conductivity
(% IACS) |
Form |
WCu10 |
16.8-17.2 |
≥2550 |
> 27 |
Rods, Bars
Sheets,Plates,
Parts |
WCu20 |
15.2-15.6 |
≥2160 |
> 34 |
WCu25 |
14.5-15.0 |
≥1940 |
> 38 |
WCu30 |
13.8-14.4 |
≥1720 |
> 42 |
Grade |
RWMA GroupB
|
Nominal
composition
% Weight |
Rockwell Hardness |
Electrical Conductvity
% ACS |
Ultimate Tensile Strength Mpa |
WT55 |
--- |
45 copper |
79B |
55 |
435 |
55 tungsten |
WT70 |
class10 |
30 copper |
90B |
50 |
586 |
70 tungsten |
WT75 |
class11 |
25 Copper |
94B |
48 |
621 |
75 Tungsten |
WT80 |
Class12 |
20 Copper |
98B |
44 |
662 |
80 Tungsten |
WT85 |
-- |
15 copper |
102B |
36 |
518 |
85 tungsten |
WT90 |
-- |
10 copper |
106B |
28 |
482 |
90 Tungsten |
TC50 |
-- |
50 copper |
94B |
47 |
483 |
50 Tungsten-Carbide |
TC70 |
-- |
30 copper |
37C |
30 |
587 |
Cross Breaking
Strength |
Density GMS/CC
|
Thermal Exp in/in cx10(6)
at 20°
|
Thermal Conductivity W/CM 20-400°C |
Specific
Heat/kg°C
at 20° |
Electro resistance at 20° |
759 |
12.6 |
11.8 |
2.4 |
251 |
3.16 |
966 |
14.18 |
10.77 |
2.01 |
214 |
3.41 |
1035 |
14.7 |
10.22 |
1.89 |
201 |
3.51 |
1173 |
15.58 |
9.2 |
1.82 |
188 |
3.9 |
1173 |
16.19 |
7.97 |
1.75 |
175 |
4.71 |
1035 |
17.05 |
6.49 |
1.47 |
163 |
6.1 |
966 |
11.27 |
12.2 |
-- |
-- |
3.6 |
1241 |
12.6 |
9.8 |
-- |
-- |
5.7 |
If you have any interest in this product, please feel free to email us: sales@chinatungsten.com or call us by: 0086 592 512 9696, 0086 592 512 9595. We are at your service.
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