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EN 1.4530 Stainless Steel vs. R31539 Cobalt

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

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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