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R30001 Cobalt vs. EN 1.4913 Stainless Steel

R30001 cobalt belongs to the cobalt alloys classification, while EN 1.4913 stainless steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is EN 1.4913 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
14 to 22
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 86
75
Tensile Strength: Ultimate (UTS), MPa 620
870 to 980

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1530
1460
Melting Onset (Solidus), °C 1260
1410
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 15
24
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
3.3

Otherwise Unclassified Properties

Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 8.9
2.9
Embodied Energy, MJ/kg 130
41
Embodied Water, L/kg 460
97

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 19
31 to 35
Strength to Weight: Bending, points 18
26 to 28
Thermal Diffusivity, mm2/s 3.7
6.5
Thermal Shock Resistance, points 19
31 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0 to 0.0015
Carbon (C), % 2.0 to 3.0
0.17 to 0.23
Chromium (Cr), % 28 to 32
10 to 11.5
Cobalt (Co), % 43 to 59
0
Iron (Fe), % 0 to 3.0
84.5 to 88.3
Manganese (Mn), % 0
0.4 to 0.9
Molybdenum (Mo), % 0 to 1.0
0.5 to 0.8
Nickel (Ni), % 0 to 3.0
0.2 to 0.6
Niobium (Nb), % 0
0.25 to 0.55
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 11 to 13
0
Vanadium (V), % 0
0.1 to 0.3