Hubei Fotma Machinery Co., Ltd.
Hubei Fotma Machinery Co., Ltd. Tungsten, Molybdenum, Titanium, Tungsten Carbide and Investment Casting Products
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HD17 HD17.5 Tungsten Heavy Alloy Bars Surface Machined 5.0mm to 120mm Thickness
Tungsten heavy alloy bar is consist of 85-99% tungsten with balanced commonly nickel and iron or copper. Tungsten alloys are made by liquid-phase sintering to give a structure consisting of almost pure tungsten particles in a matrix of the alloy elements. tungsten alloy bar is enlarging a hole that has already been drilled or cast by means of a single-point cutting tool to achieve greater accuracy of the diameter of a hole such as in boring a cannon barrel. In addition, it can be used to cut a tapered hole.
Introduction of Tungsten Heavy Alloy Bars:
Standard: AMS-T-21014
Density: (17.0 - 18.8) g/cm3
Surface Condition: Machined
Dimension: Thickness 5.0mm - 200mm x W x L
Composition: W content: 90-98%, W-Ni-Fe, W-Ni-Cu
Tungsten Alloy Bar Applications:
*Balancing weights High quality Tungsten heavy alloy bar
*The war industry with the ball core,the ball link.the shrapnel,the armor-piercing shell uses the ball
*Substitutional material for Uranium
*Electroheat upsetting anvil block
*High voltage electrical contact
*Electrodes for Resistance Welding
*Radioactive shields Hi
Properties of Tungsten Heavy Alloys:
| AMS-T-21014 | Class 1 | Class 1 | Class 2 | Class 2 |
| Composition | 90W7Ni3Fe | 91W6Ni3Fe | 92W5Ni3Fe | 93W4Ni3Fe |
| Density (g/cm3) | 17.1±0.15 | 17.25±0.15 | 17.50±0.15 | 17.60±0.15 |
| Heat Treatment | Sintering | Sintering | Sintering | Sintering |
| Tensile Strength (MPa) | 900-1000 | 900-1000 | 900-1100 | 900-1100 |
| Elongation (%) | 18-29 | 17-27 | 16-26 | 16-24 |
| Hardness(HRC) | 24-28 | 25-29 | 25-29 | 26-30 |
| AMS-T-21014 | Class 3 | Class 3 | Class 4 |
| Composition | 95W3Ni2Fe | 96W3Ni1Fe | 97W2Ni1Fe |
| Density (g/cm3) | 18.10±0.15 | 18.30±0.15 | 18.50±0.15 |
| Heat Treatment | Sintering | Sintering | Sintering |
| Tensile Strength (MPa) | 920-1100 | 920-1100 | 920-1100 |
| Elongation (%) | 10-22 | 8-20 | 6-13 |
| Hardness(HRC) | 27-32 | 28-34 | 28-36 |
| ASTM B 777-99 |
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| Class | 1 | 2 | 3 | 4 | |
| Tungsten Nominal % | 90 | 92.5 | 95 | 97 | |
| Density (g/cc) | 16.85-17.25 | 17.15-17.85 | 17.75-18.35 | 18.25-18.85 | |
| Hardness (HRC) Max | 32 | 33 | 34 | 35 | |
| Ultimate Tensile Strength | ksi | 110 | 110 | 105 | 100 |
| Mpa | 758 | 758 | 724 | 689 | |
| Yield Strength at 0.2% off-set | ksi | 75 | 75 | 75 | 75 |
| Mpa | 517 | 517 | 517 | 517 | |
| Elongation, % | 5 | 5 | 3 | 2 | |
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