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AWS BVAg-18 vs. R30003 Cobalt

AWS BVAg-18 belongs to the otherwise unclassified metals classification, while R30003 cobalt belongs to the cobalt alloys. There are 17 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 BVAg-18 and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
210
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 30
83
Tensile Strength: Ultimate (UTS), MPa 180
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 140
310
Melting Completion (Liquidus), °C 720
1400
Melting Onset (Solidus), °C 600
1440
Specific Heat Capacity, J/kg-K 280
450
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Density, g/cm3 9.7
8.4
Embodied Carbon, kg CO2/kg material 59
8.0
Embodied Energy, MJ/kg 930
110

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 15
24
Strength to Weight: Axial, points 5.1
32 to 57
Strength to Weight: Bending, points 7.3
26 to 38
Thermal Shock Resistance, points 8.1
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 28.5 to 31.5
0
Iron (Fe), % 0
10 to 20.5
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0
14 to 16
Phosphorus (P), % 0 to 0.0020
0 to 0.015
Silicon (Si), % 0
0 to 1.2
Silver (Ag), % 59 to 61
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
0