Solid Tungsten Heavy Alloy Counterweights Shape Customized For Plane / Vehicles
Due to high density but small volume, high melting point, excellent hardness, superior wearing resistance, high ultimate tensile strength, high ductility, well machinability, non-toxic and environmental friendly, high impact resistance and crack resistance, tungsten counterweights become more and more popular.
Tungsten material is widely used for counter weights, working as so-called tungsten weight in many fields, such as in racing car, yacht, airplane, etc.
Density of tungsten alloy could be ranged from 17.0g/cm3 to 18.5g/cm3, and the capacity could be reduced if it needs to be use in a small place. Besides, as its special properties, such as high hardness, wearing résistance, excellent elongation, well machining ability, it is a suitable material for counterweight for airplane.
Tungsten Heavy Alloy Counterweights Advantages:
- High density- up to 18.5 g/cm3.
- Up to 65% denser than Lead.
- Up to 130% denser than Steel.
- Mechanical properties to suit either dynamic or static locations.
- Weakly Ferro magnetic.
- Non-magnetic, if specifically required.
- Safe and environmentally friendly alternative to Lead.
- Non-Toxic.
- Corrosion resistant.
- Easily machined.
- Easily mechanically joined, brazed or shrunk fit to other materials.
- Equivalents to most commercial specifications available.
Tungsten Heavy Alloy Properties:
|
Alloy Type |
HD17 90 W |
HD17D 90 W |
HD17.5 92.5 W |
HD17.6 92.5 W |
HD17.7 93 W |
HD18 95 W |
HD18D 95 W |
HD18.5 97 W |
|
MIL-T-21014 |
Class 1 |
Class 1 |
Class 1 |
- |
- |
Class 3 |
Class 3 |
Class 4 |
|
Typical Density |
17.1 |
17.1 |
17.5 |
17.6 |
17.7 |
18 |
18 |
18.5 |
|
Typical Hardness RC |
24 |
25 |
26 |
30 |
32 |
27 |
27 |
28 |
|
Ultimate Tensile Strength Min |
110,000 |
120,000 |
114,000 |
120,000 |
125,000 |
110,000 |
120,000 |
123,000 |
|
Minimum % Elongation |
6 |
10 |
7 |
4 |
4 |
7 |
7 |
5 |
|
Proportional Elastic Limit |
45,000 |
52,000 |
46,000 |
55,000 |
60,000 |
45,000 |
44,000 |
45,000 |
|
Modulus of Elasticity |
40 x 106 |
45 x 106 |
47 x 106 |
52 x 106 |
53 x 106 |
45 x 106 |
50 x 106 |
53 x 106 |
|
Coefficient of Thermal Expansion x10-6/0C |
5.4 |
4.61 |
4.62 |
4.5 |
4.5 |
4.43 |
4.6 |
4.5 |
|
Thermal Conductivity |
0.23 |
0.18 |
0.2 |
0.27 |
0.27 |
0.33 |
0.26 |
0.3 |
|
Electrical Conductivity |
14 |
10 |
13 |
14 |
14 |
16 |
13 |
17 |
Picture show:
