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R30075 Cobalt vs. EN 1.4612 Stainless Steel

R30075 cobalt belongs to the cobalt alloys classification, while EN 1.4612 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is EN 1.4612 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
190
Elongation at Break, % 12
11
Fatigue Strength, MPa 250 to 840
860 to 950
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 82 to 98
76
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
1690 to 1850
Tensile Strength: Yield (Proof), MPa 480 to 840
1570 to 1730

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1290
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.1
3.6
Embodied Energy, MJ/kg 110
50
Embodied Water, L/kg 530
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
190 to 210
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
60 to 65
Strength to Weight: Bending, points 22 to 31
40 to 43
Thermal Shock Resistance, points 21 to 29
58 to 63

Alloy Composition

Aluminum (Al), % 0 to 0.1
1.4 to 1.8
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.015
Chromium (Cr), % 27 to 30
11 to 12.5
Cobalt (Co), % 58.7 to 68
0
Iron (Fe), % 0 to 0.75
71.5 to 75.5
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 5.0 to 7.0
1.8 to 2.3
Nickel (Ni), % 0 to 0.5
10.2 to 11.3
Nitrogen (N), % 0 to 0.25
0 to 0.010
Phosphorus (P), % 0 to 0.020
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.0050
Titanium (Ti), % 0 to 0.1
0.2 to 0.5
Tungsten (W), % 0 to 0.2
0

Comparable Variants