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R30816 Cobalt vs. EN 1.4913 Stainless Steel

R30816 cobalt belongs to the cobalt alloys classification, while EN 1.4913 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30816 cobalt and the bottom bar is EN 1.4913 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
14 to 22
Fatigue Strength, MPa 250
320 to 480
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 81
75
Tensile Strength: Ultimate (UTS), MPa 1020
870 to 980
Tensile Strength: Yield (Proof), MPa 460
480 to 850

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1460
1410
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 13
24
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Density, g/cm3 9.1
7.8
Embodied Carbon, kg CO2/kg material 20
2.9
Embodied Energy, MJ/kg 320
41
Embodied Water, L/kg 440
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 510
600 to 1860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 31
31 to 35
Strength to Weight: Bending, points 25
26 to 28
Thermal Diffusivity, mm2/s 3.3
6.5
Thermal Shock Resistance, points 28
31 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0 to 0.0015
Carbon (C), % 0.32 to 0.42
0.17 to 0.23
Chromium (Cr), % 19 to 21
10 to 11.5
Cobalt (Co), % 40 to 49.8
0
Iron (Fe), % 0 to 5.0
84.5 to 88.3
Manganese (Mn), % 1.0 to 2.0
0.4 to 0.9
Molybdenum (Mo), % 3.5 to 4.5
0.5 to 0.8
Nickel (Ni), % 19 to 21
0.2 to 0.6
Niobium (Nb), % 3.5 to 4.5
0.25 to 0.55
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Tantalum (Ta), % 3.5 to 4.5
0
Tungsten (W), % 3.5 to 4.5
0
Vanadium (V), % 0
0.1 to 0.3