High Density Tungsten

High density tungsten alloys are materials with a high tungsten content and low amounts of Ni Fe or Ni Cu.

Advantages

  • High Density
  • Good machinability
  • Good mechanical properties
  • High modulus of elasticity
  • Harmless to the health and environment

Applications

  • Electrodes for resistance welding
  • Protection shields for nuclear radiation
  • Balancing weights
  • Electroheat upsetting anvil block
  • High voltage electrical contact
  • Substitutional material for Uranium
  • Balls in bomb

High Density Tungsten Technical Data

High Density Tungsten Type

90% W
6% Ni
4% Cu

90% W
6% Ni
4% Cu/Fe

90% W
7% Ni
3% Fe

92.5% W
5.25% Ni
2.25% Fe

93% W
Balance
Ni Fe Mo

95% W
3.5% Ni
1.5% Cu

95% W
3.5% Ni
1.5% Fe

97% W
2.1% Ni
.9% Fe

ASTM-B-777-07

Class 1

Class 1

Class 2

Super Chatter Free

Class 3

Class 3

Class 4

Density Gms/cc

17

17

17.5

17.7

18

18

18.5

Density Lbs/cu. in.

.614

.614

.632

.639

.650

.650

.668

Hardness Rockwell C

24

25

26

30

27

27

28

Ultimate Tensile Strength (PSI)

110,000

125,000

114,000

130,000

115,000

125,000

128,000

Yield Strength .2% offset (PSI)

90,000

88,000

90,000

90,000

85,000

90,000

85,000

Elongation (% in 1")

8

14

12

10

7

12

10

Proportional Elastic Limit (PSI)

45,000

52,000

46,000

60,000

45,000

44,000

45,000

Modules of
Elasticity (PSI)

40 x 10 6

45 x 10 6

47 x 10 6

53 x 10 6

45 x 10 6

50 x 10 6

53 x 10 6

Coefficient of Thermal Expansion X 10 -6/ˇăC (20-400ˇăC)

5.4

4.8

4.6

4.5

4.4

4.6

4.5

Thermal Conductivity (CGS Units)

.23

.18

.20

.27

.33

.26

.30

Electrical Conductivity
(% IACS)

14

10

13

14

16

13

17

Magnetic Properties

W Ni Cu = NIL
W Ni Cu/Fe= Slightly Magnetic

Slightly
Magnetic

Slightly
Magnetic

Slightly
Magnetic

NIL

Slightly
Magnetic

Slightly
Magnetic