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AWS BAg-37 vs. R30008 Cobalt

AWS BAg-37 belongs to the otherwise unclassified metals classification, while R30008 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-37 and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 94
210
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 36
83
Tensile Strength: Ultimate (UTS), MPa 180
950 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 150
320
Melting Completion (Liquidus), °C 780
1400
Melting Onset (Solidus), °C 690
1330
Specific Heat Capacity, J/kg-K 350
450
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.4
Embodied Carbon, kg CO2/kg material 26
8.1
Embodied Energy, MJ/kg 410
110

Common Calculations

Stiffness to Weight: Axial, points 6.1
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 5.9
31 to 56
Strength to Weight: Bending, points 8.3
25 to 37
Thermal Shock Resistance, points 6.6
25 to 44

Alloy Composition

Boron (B), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 39 to 41
0
Iron (Fe), % 0
7.6 to 20
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 0
15 to 18
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 1.2
Silver (Ag), % 24 to 26
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 1.5 to 2.5
0
Zinc (Zn), % 31 to 35
0
Residuals, % 0 to 0.15
0