Copper Tungsten Alloys

Refractory Metal Composites

Eagle refractory metal composite materials are a combination of tungsten or tungsten carbide combined with copper or silver. The manufacturing process is to press the refractory (tungsten or tungsten carbide), sinter the pressed compact at a high temperature, and infiltrate with copper or silver. All this is done under very closely controlled conditions. The result is a relatively hard materials with superior arc and wear resistance, high physical properties at elevated temperatures, and good electrical and thermal conductivity.

CW55

RWMA Group B

Nominal composition % Weight

45 copper 55 tungsten

Rockwell Hardness

79B

Electrical Conductvity % ACS

55

Ultimate Tensile Strength PSI

63000

Cross Breaking Strength PSI

110000

Density GMS/CC

12.60

Thermal Exp in/in cx10(6) at 20

11.80

Thermal Conductivity W/CM °C 20-400°C

2.40

Specific Heat /kg °C at 20°

251

Electro resistance at 20°

3.16

 CW68

RWMA Group B

Nominal composition % Weight

32 copper 68 tungsten

Rockwell Hardness

88B

Electrical Conductvity % ACS

55

Ultimate Tensile Strength PSI

75000

Cross Breaking Strength PSI

130000

Density GMS/CC

13.93

Thermal Exp in/in cx10(6) at 20

10.90

Thermal Conductivity W/CM °C 20-400°C

2.10

Specific Heat /kg °C at 20°

219

Electro resistance at 20°

3.33

CW70

RWMA Group B

class10

Nominal composition % Weight

30 copper 70 tungsten

Rockwell Hardness

90B

Electrical Conductvity % ACS

50

Ultimate Tensile Strength PSI

85000

Cross Breaking Strength PSI

140000

Density GMS/CC

14.18

Thermal Exp in/in cx10(6) at 20

10.77

Thermal Conductivity W/CM °C 20-400°C

2.01

Specific Heat /kg °C at 20°

214

Electro resistance at 20°

3.41

 

CW75

RWMA Group B

class11

Nominal composition % Weight

25 Copper 75 Tungsten

Rockwell Hardness

94B

Electrical Conductvity % ACS

48

Ultimate Tensile Strength PSI

90000

Cross Breaking Strength PSI

150000

Density GMS/CC

14.70

Thermal Exp in/in cx10(6) at 20

10.22

Thermal Conductivity W/CM °C 20-400°C

1.89

Specific Heat /kg °C at 20°

201

Electro resistance at 20°

3.51

 

CW78

RWMA Group B

class 11&12

Nominal composition % Weight

22 Copper 78 Tungsten

Rockwell Hardness

96B

Electrical Conductvity % ACS

46

Ultimate Tensile Strength PSI

94000

Cross Breaking Strength PSI

160000

Density GMS/CC

15.12

Thermal Exp in/in cx10(6) at 20

9.30

Thermal Conductivity W/CM °C 20-400°C

1.84

Specific Heat /kg °C at 20°

194

Electro resistance at 20°

3.71

 

CW80

RWMA Group B

Class 12

Nominal composition % Weight

20 Copper 80 Tungsten

Rockwell Hardness

98B

Electrical Conductvity % ACS

44

Ultimate Tensile Strength PSI

96000

Cross Breaking Strength PSI

170000

Density GMS/CC

15.58

Thermal Exp in/in cx10(6) at 20

9.20

Thermal Conductivity W/CM °C 20-400°C

1.82

Specific Heat /kg °C at 20°

188

Electro resistance at 20°

3.9

 

CW85

RWMA Group B

Nominal composition % Weight

15 copper 85 tungsten

Rockwell Hardness

102B

Electrical Conductvity % ACS

36

Ultimate Tensile Strength PSI

75000

Cross Breaking Strength PSI

170000

Density GMS/CC

16.19

Thermal Exp in/in cx10(6) at 20

7.97

Thermal Conductivity W/CM °C 20-400°C

1.75

Specific Heat /kg °C at 20°

175

Electro resistance at 20°

4.71

CW90

RWMA Group B

Nominal composition % Weight

10 copper 90 Tungsten

Rockwell Hardness

106B

Electrical Conductvity % ACS

28

Ultimate Tensile Strength PSI

70000

Cross Breaking Strength PSI

150000

Density GMS/CC

17.05

Thermal Exp in/in cx10(6) at 20

6.49

Thermal Conductivity W/CM °C 20-400°C

1.47

Specific Heat /kg °C at 20°

163

Electro resistance at 20°

6.1

 

CW75

RWMA Group B

Nominal composition % Weight

25 Copper Alloy

Rockwell Hardness

109B

Electrical Conductvity % ACS

28

Ultimate Tensile Strength PSI

16000

Cross Breaking Strength PSI

200000

Density GMS/CC

14.60

Thermal Exp in/in cx10(6) at 20

Thermal Conductivity W/CM °C 20-400°C

Specific Heat /kg °C at 20°

Electro resistance at 20°

6.1

 

TC50

RWMA Group B

Nominal composition % Weight

50 copper 50 Tungsten-Carbide

Rockwell Hardness

94B

Electrical Conductvity % ACS

47

Ultimate Tensile Strength PSI

70000

Cross Breaking Strength PSI

140000

Density GMS/CC

11.27

Thermal Exp in/in cx10(6) at 20

12.2

Thermal Conductivity W/CM °C 20-400°C

Specific Heat /kg °C at 20°

Electro resistance at 20°

3.6

 

TC56

RWMA Group B

Nominal composition % Weight

44 copper 56 Tungsten-carbide

Rockwell Hardness

99B

Electrical Conductvity % ACS

42

Ultimate Tensile Strength PSI

75000

Cross Breaking Strength PSI

160000

Density GMS/CC

11.67

Thermal Exp in/in cx10(6) at 20

11.5

Thermal Conductivity W/CM °C 20-400°C

Specific Heat /kg °C at 20°

Electro resistance at 20°

4.1

 

TC70

RWMA Group B

Nominal composition % Weight

30 copper 70 tungsten-carbide

Rockwell Hardness

37C

Electrical Conductvity % ACS

30

Ultimate Tensile Strength PSI

85000

Cross Breaking Strength PSI

180000

Density GMS/CC

12.60

Thermal Exp in/in cx10(6) at 20

9.8

Thermal Conductivity W/CM °C 20-400°C

Specific Heat /kg °C at 20°

Electro resistance at 20°

5.7

 

TCa70

RWMA Group B

Nominal composition % Weight

30 copper alloy 70 tungsten-carbide

Rockwell Hardness

47C

Electrical Conductvity % ACS

18

Ultimate Tensile Strength PSI

150000

Cross Breaking Strength PSI

220000

Density GMS/CC

12.60

Thermal Exp in/in cx10(6) at 20

Thermal Conductivity W/CM °C 20-400°C

Specific Heat /kg °C at 20°

Electro resistance at 20°

9.5

 

Molybdenum

RWMA Group B

class 14

Nominal composition % Weight

100 molybdenum

Rockwell Hardness

92-98B

Electrical Conductvity % ACS

33

Ultimate Tensile Strength PSI

100000

Cross Breaking Strength PSI

Density GMS/CC

10.15

Thermal Exp in/in cx10(6) at 20

5.40

Thermal Conductivity W/CM °C 20-400°C

1.15

Specific Heat /kg °C at 20°

260

Electro resistance at 20°

5.2

 

Tungsten

RWMA Group B

class 13

Nominal composition % Weight

100 tungsten

Rockwell Hardness

35-50C

Electrical Conductvity % ACS

30

Ultimate Tensile Strength PSI

100000

Cross Breaking Strength PSI

Density GMS/CC

19.10

Thermal Exp in/in cx10(6) at 20

4.40

Thermal Conductivity W/CM °C 20-400°C

1.25

Specific Heat /kg °C at 20°

140

Electro resistance at 20°

6.5

 

Diemetal

RWMA Group B

Nominal composition % Weight

92.5 tungsten blance Ni, Fe, Mo