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R30816 Cobalt vs. EN 1.5113 Steel

R30816 cobalt belongs to the cobalt alloys classification, while EN 1.5113 steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30816 cobalt and the bottom bar is EN 1.5113 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280
170 to 270
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
11 to 18
Fatigue Strength, MPa 250
220 to 470
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 81
72
Tensile Strength: Ultimate (UTS), MPa 1020
580 to 900
Tensile Strength: Yield (Proof), MPa 460
320 to 770

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1540
1450
Melting Onset (Solidus), °C 1460
1410
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 13
52
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 9.1
7.8
Embodied Carbon, kg CO2/kg material 20
1.4
Embodied Energy, MJ/kg 320
19
Embodied Water, L/kg 440
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
91 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 510
270 to 1570
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 31
21 to 32
Strength to Weight: Bending, points 25
20 to 27
Thermal Diffusivity, mm2/s 3.3
14
Thermal Shock Resistance, points 28
17 to 26

Alloy Composition

Carbon (C), % 0.32 to 0.42
0 to 0.1
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 40 to 49.8
0
Iron (Fe), % 0 to 5.0
97 to 97.5
Manganese (Mn), % 1.0 to 2.0
1.6 to 1.8
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 3.5 to 4.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.9 to 1.1
Sulfur (S), % 0 to 0.030
0 to 0.025
Tantalum (Ta), % 3.5 to 4.5
0
Tungsten (W), % 3.5 to 4.5
0