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R30155 Cobalt vs. EN 1.0033 Steel

Both R30155 cobalt and EN 1.0033 steel are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is EN 1.0033 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
86 to 96
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
17 to 32
Fatigue Strength, MPa 310
120 to 140
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 570
200
Tensile Strength: Ultimate (UTS), MPa 850
300 to 330
Tensile Strength: Yield (Proof), MPa 390
150 to 200

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 12
53
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 80
1.8
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 9.7
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 300
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
48 to 83
Resilience: Unit (Modulus of Resilience), kJ/m3 370
63 to 100
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
10 to 12
Strength to Weight: Bending, points 24
13 to 14
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 21
9.4 to 10

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.11
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
98.8 to 100
Manganese (Mn), % 1.0 to 2.0
0 to 0.7
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.045
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0