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R31539 Cobalt vs. EN 1.4530 Stainless Steel

R31539 cobalt belongs to the cobalt alloys classification, while EN 1.4530 stainless steel belongs to the iron alloys. There are 18 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 R31539 cobalt and the bottom bar is EN 1.4530 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 86
76
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
1030 to 1370

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1290
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.2
3.4
Embodied Energy, MJ/kg 110
46
Embodied Water, L/kg 530
130

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 44
36 to 48
Strength to Weight: Bending, points 27 to 32
29 to 35
Thermal Shock Resistance, points 24 to 32
35 to 47

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0.6 to 0.8
Carbon (C), % 0 to 0.14
0 to 0.015
Chromium (Cr), % 26 to 30
11.5 to 12.5
Cobalt (Co), % 57.7 to 68.7
0
Iron (Fe), % 0 to 0.75
74.4 to 77.3
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 5.0 to 7.0
1.9 to 2.2
Nickel (Ni), % 0 to 1.0
8.5 to 9.5
Nitrogen (N), % 0 to 0.25
0 to 0.010
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0
0.28 to 0.37