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AWS BVAu-4 vs. R30001 Cobalt

AWS BVAu-4 belongs to the otherwise unclassified metals classification, while R30001 cobalt belongs to the cobalt alloys. There are 15 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS BVAu-4 and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 41
86
Tensile Strength: Ultimate (UTS), MPa 190
620

Thermal Properties

Latent Heat of Fusion, J/g 100
310
Melting Completion (Liquidus), °C 950
1530
Melting Onset (Solidus), °C 950
1260
Specific Heat Capacity, J/kg-K 190
430
Thermal Expansion, µm/m-K 14
11

Otherwise Unclassified Properties

Density, g/cm3 17
9.0

Common Calculations

Stiffness to Weight: Axial, points 3.6
14
Stiffness to Weight: Bending, points 9.3
22
Strength to Weight: Axial, points 3.0
19
Strength to Weight: Bending, points 4.2
18
Thermal Shock Resistance, points 8.7
19

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Gold (Au), % 81.5 to 82.5
0
Iron (Fe), % 0
0 to 3.0
Lead (Pb), % 0 to 0.0020
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 17.5 to 18.5
0 to 3.0
Phosphorus (P), % 0 to 0.0020
0
Silicon (Si), % 0
0 to 2.0
Tungsten (W), % 0
11 to 13
Zinc (Zn), % 0 to 0.0010
0