High specific gravity tungsten alloy is a type of alloy with tungsten as the matrix (W content 85-99%) and supplemented with elements such as Ni, Cu, Co, Mo and Cr.
According to the composition characteristics and applications of the alloy, it is divided into main series such as W-Ni-Fe, W-Ni-Cu, W-Co, W-WC-Cu, W-Ag, etc. Its density is as high as 16.5 -19.0g/cm ³, and it is called a high specific gravity alloy by the world.
It also has a series of excellent properties. High specific gravity: the general specific gravity is 16.5-18.75g/cm ³. High strength: the tensile strength is 700-1000Mpa. Strong radiation absorption capacity: its capacity is 30-40% higher than that of lead. High thermal conductivity: it is five times that of die steel. Small coefficient of thermal expansion: only 1/2-1/3 of that of iron or steel, and good electrical conductivity. It has good solderability and processability. Due to the excellent properties of high-density alloys mentioned above, they are widely used in industries such as aerospace, aviation, military, oil drilling, electrical instruments, and medicine.
| No. |
W |
Ni |
Fe |
Al |
Mg |
Ca |
Si |
C |
N |
H |
O |
| W90NiFe |
Balance |
6.9-7.1 |
2.9-3.1 |
0.002 |
0.003 |
0.005 |
0.005 |
0.008 |
0.003 |
0.001 |
0.005 |
| W93NiFe |
Balance |
4.8-5.0 |
2.0-2.2 |
| W95NiFe |
Balance |
3.4-3.6 |
1.4-1.6 |
| W97NiFe |
Balance |
2.0-2.2 |
0.8-1.0 |
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