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R30605 Cobalt vs. AWS E316LMn

R30605 cobalt belongs to the cobalt alloys classification, while AWS E316LMn belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is AWS E316LMn.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
23
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
79
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
620

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 410
470
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.9
Embodied Carbon, kg CO2/kg material 9.8
4.6
Embodied Energy, MJ/kg 140
64
Embodied Water, L/kg 450
180

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 33 to 55
22
Strength to Weight: Bending, points 25 to 36
20
Thermal Shock Resistance, points 31 to 52
15

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.040
Chromium (Cr), % 19 to 21
18 to 21
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 3.0
47.5 to 59.4
Manganese (Mn), % 1.0 to 2.0
5.0 to 8.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 9.0 to 11
15 to 18
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 14 to 16
0