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R30075 Cobalt vs. EN 1.4361 Stainless Steel

R30075 cobalt belongs to the cobalt alloys classification, while EN 1.4361 stainless steel belongs to the iron alloys. There are 27 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 R30075 cobalt and the bottom bar is EN 1.4361 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
190
Elongation at Break, % 12
43
Fatigue Strength, MPa 250 to 840
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 82 to 98
75
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
630
Tensile Strength: Yield (Proof), MPa 480 to 840
250

Thermal Properties

Latent Heat of Fusion, J/g 320
350
Melting Completion (Liquidus), °C 1360
1370
Melting Onset (Solidus), °C 1290
1330
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.5

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 8.1
3.6
Embodied Energy, MJ/kg 110
52
Embodied Water, L/kg 530
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
220
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
160
Stiffness to Weight: Axial, points 14 to 17
14
Stiffness to Weight: Bending, points 24 to 25
25
Strength to Weight: Axial, points 26 to 42
23
Strength to Weight: Bending, points 22 to 31
21
Thermal Diffusivity, mm2/s 3.5
3.7
Thermal Shock Resistance, points 21 to 29
15

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.015
Chromium (Cr), % 27 to 30
16.5 to 18.5
Cobalt (Co), % 58.7 to 68
0
Iron (Fe), % 0 to 0.75
58.7 to 65.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 5.0 to 7.0
0 to 0.2
Nickel (Ni), % 0 to 0.5
14 to 16
Nitrogen (N), % 0 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 1.0
3.7 to 4.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0