Density of WHA
- Details
- Category: Tungsten Information
- Published on Saturday, 08 June 2013 14:45
Density of WHA (tungsten heavy alloy) is the single most important property that makes WHA the material of choice for a given application. The selection of a specific composition for a given density application may ultimately be made on the basis of concurrent mechanical property requirements or sintering considerations, unless a specific value of density is critical. WHAs can approach the density of pure tungsten and DU without the high cost of the former or the licensing and special handling requirements of the latter.
As is true with most mechanical designs, the optimum design is the one that adequately addresses all critical parameters and offers the best compromise of the remaining options. As the density of WHA is increased, the available ductility decreases. Alloy density varies according to tungsten content, as can be seen in the following table of Tungsten Products standard alloys.
|
TP Alloy* |
Composition (Wt. %) |
MIL-T-21014D Classification |
Typical Density (g/cc) (lbs/in2) |
Magnetic Permeability (m) |
|
SD170 |
90W-(3Ni/Fe) |
Class 1 |
17.14 0.619 |
>6.0 |
|
Dens21 |
90W-(7Ni/Fe) |
Class 1 |
17.20 0.622 |
1.02-1.05 |
|
SD175 |
92.5W-(3Ni/Fe) |
Class 2 |
17.62 0.637 |
4.5-5.0 |
|
Dens23 |
92.5W-(7Ni/Fe) |
Class 2 |
17.66 0.638 |
1.02-1.05 |
|
SD180 |
95W-(3Ni/Fe) |
Class 3 |
18.13 0.655 |
4.0-4.5 |
|
Dens25 |
95W-(7Ni/Fe) |
Class 3 |
18.16 0.656 |
1.01-1.02 |
|
SD185 |
97W-(3Ni/Fe) |
Class 4 |
18.57 0.671 |
2.5-3.0 |
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