High density alloy
Tungsten Alloy Code: GMW
Density: (17-18.5) g/cm3
Main Component: W(88-98)% with the addition of nickel and copper or nickel and iron, etc.
Main Application:
1- Shakers in micromotor widely used in toys and mobile phones.
2- Radioshielding materials. For example, collimator in flaw detector and clinical Radioshielding needle.
3- Parts of balance wight
4- Widely used in military equipment and fishing equipment to raplace uranium and plumbum for no pollution in circumstance.
5- Used in electro-forge and electro-heading.
6- Used in armor-piercer.
7- Contacts material in high voltage.
8- Inertia balance weight ball in missile, plane and race-car.
Tungsten Heavy Alloy Advantages:
- High density
- Excellent mechanical properties such as high vibration-damping capacity and high Young's modulus.
- Excellent radiation-shielding property
- High thermal conductivity with low thermal expansion coefficient
- Higher high-temperature strength and thermal shock resistance
- High oxidation resistance and corrosion resistance
**We supply this material as per customerized sizes and properties.
Tungsten Heavy Alloy Picture:
| Typical Properties* |
| | HD 17
90% W
6% Ni
4% Cu | HD 17D
90% W
7% Ni
3% Fe | HD 17.5
92.5% W
5.25% Ni
2.25% Fe | HD 17.6
92.5% W
Balance
Ni Fe Mo | HD 17.7
93% W
Balance
Ni Fe Mo | HD 18
95% W
3.5% Ni
1.5% Cu | HD 18D
95% W
3.5% Ni
1.5% Fe | HD 18.5
97% W
2.1% Ni
.9% Fe |
Mill, Spec. T-21014 D
SAE Aero. Materal
Spec. (AMS) 7725C
ASTM-B-777-97 | Class 1
Type 1
Class 1 | Class 1
Type 2
Class 1 | Class 2
----
Class 2 | Diemitech
----
---- | S Chat. Free
----
---- | Class 3
----
Class 3 | Class 3
----
Class 3 | Class 4
----
Class 4 |
Density Gms/cc
Density Lbs/cu. in. | 17
.614 | 17
.614 | 17.5
.632 | 17.6
.636 | 17.7
.639 | 18
.650 | 18
.650 | 18.5
.668 |
| Hardness Rockwell C | 24 | 25 | 26 | 30 | 32 | 27 | 27 | 28 |
| Ultimate Tensile Strength (PSI) | 110,000 | 120,000 | 114,000 | 120,000 | 125,000 | 110,000 | 120,000 | 123,000 |
Yeild Strength
.2% offset (PSI) | 80,000 | 88,000 | 84,000 | 90,000 | 95,000 | 85,000 | 90,000 | 85,000 |
| Elongation (% in 1") | 6 | 10 | 7 | 4 | 4 | 7 | 7 | 5 |
Proportional Elastic
Limit (PSI) | 45,000 | 52,000 | 46,000 | 55,000 | 60,000 | 45,000 | 44,000 | 45,000 |
Modules of
Elasticity (PSI) | 40 x 10 6 | 45 x 10 6 | 47 x 10 6 | 52 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 / o C (20-400 o C) | 5.4 | 4.61 | 4.62 | 4.5 | 4.5 | 4.43 | 4.6 | 4.5 |
Thermal Conductivity
(CGS Units) | .23 | .18 | .20 | .27 | .27 | .33 | .26 | .30 |
Electrical
Conductivity
(% IACS) | 14 | 10 | 13 | 14 | 14 | 16 | 13 | 17 |
| Magnetic Properties | NIL | Slightly Magnetic | Slightly Magnetic | Slightly Magnetic | Slightly Magnetic | NIL | Slightly Magnetic | Slightly Magnetic |
* Properties may vary according to size and shap of part.
** Composition shown is typical and may change for manufacturing purposes or to meet physical and/or application requirements.
If non-magnetic material is required, it should be specified. |
