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