Tungsten HD Alloy, Tungsten Heavy alloy Tube , Wolfram Heavy alloy Tube(WNiFe, WNiCu alloy) made according to standard ASTM B777 , AMS- T 21014 , density HD 17 , HD 17BB , HD 17D , HD 17.5 , HD17.7 , HD 18 , HD 18D , HD 18.5 g/cm3 , including 90WNiFe, 93WNiFe , 95WNiFe , 97WNiFe , 90WNiCu, 93WNiCu , 95WNiCu , 97WNiCu etc.
Tungsten alloy has a good radiation shielding effect, so tungsten alloy tube , High Density Tungsten Alloy Tube can be used for the use of shielding needles in medical treatment; for rocket propulsion, the engine is a jet engine that uses compressed high-performance fuel, when the rocket is launched. The temperature can be reached up to thousands of degrees. The tungsten alloy tube is a kind of metal material with high temperature resistance, so it is used in the rocket engine in the lining part and the ignition tube part. The depth of the ignition tube is in the combustion chamber of the engine, and huge heat is generated instantaneously after ignition. At this time, the ignition tube is subjected to thousands of temperatures, which requires high temperature resistance of the material.
| HD 17 | HD 17BB | HD 17D | HD 17.5 | HD17.7 | HD 18 | HD 18D | HD 18.5 | |
| 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 |
93WBalanceNi FeMo | 95% W 3.5%Ni 1.5%Cu |
95% W 3.5% Ni 1.5% Fe |
97% W 2.1% Ni 9% Fe |
|
| Density Gms/cc | 17 | 17 | 17.5 | 17.7 | 18 | 18 | 18.5 | |
| Hardness Rockwell | 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 | |
| Coefficient of Thermal Expansion X 10-6/°C (20-400°C) | 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 | HD 17 = NIL HD 17BB = Slightly Magnetic |
Slightly Magnetic |
Slightly Magnetic |
Slightly Magnetic |
NIL | Slightly Magnetic |
Slightly Magnetic |
|
