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AWS BVAg-8 vs. R30035 Cobalt

AWS BVAg-8 belongs to the otherwise unclassified metals classification, while R30035 cobalt belongs to the cobalt alloys. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-8 and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
220 to 230
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 31
84 to 89
Tensile Strength: Ultimate (UTS), MPa 170
900 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Melting Completion (Liquidus), °C 780
1440
Melting Onset (Solidus), °C 780
1320
Specific Heat Capacity, J/kg-K 280
440
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Density, g/cm3 10
8.7

Common Calculations

Stiffness to Weight: Axial, points 4.6
14 to 15
Stiffness to Weight: Bending, points 14
23 to 24
Strength to Weight: Axial, points 4.7
29 to 61
Strength to Weight: Bending, points 6.8
24 to 39
Thermal Shock Resistance, points 7.6
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 27 to 29
0
Iron (Fe), % 0
0 to 1.0
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.0020
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Silver (Ag), % 71 to 73
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Zinc (Zn), % 0 to 0.0010
0