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Class 4 Tungsten vs. ASTM B780 Alloy

Both class 4 tungsten and ASTM B780 alloy are otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
83
Elongation at Break, % 2.3
1.1 to 9.1
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 110
30
Tensile Strength: Ultimate (UTS), MPa 790
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 170
140
Specific Heat Capacity, J/kg-K 130
270
Thermal Expansion, µm/m-K 4.5
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 16
10

Common Calculations

Stiffness to Weight: Axial, points 9.6
4.5
Stiffness to Weight: Bending, points 14
14
Strength to Weight: Axial, points 14
9.1 to 16
Strength to Weight: Bending, points 12
11 to 15
Thermal Shock Resistance, points 46
16 to 29

Alloy Composition


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Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 0
23.5 to 25.7
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nickel (Ni), % 0
0.35 to 0.65
Silver (Ag), % 0
74 to 76
Tungsten (W), % 97
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 3.0
0