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R30008 Cobalt vs. EN 1.4529 Stainless Steel

R30008 cobalt belongs to the cobalt alloys classification, while EN 1.4529 stainless steel belongs to the iron alloys. They have 58% of their average alloy composition in common. 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 R30008 cobalt and the bottom bar is EN 1.4529 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 1.1 to 73
43
Fatigue Strength, MPa 320 to 530
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
80
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
750
Tensile Strength: Yield (Proof), MPa 500 to 1080
340

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 450
460
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 95
33
Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 8.1
6.2
Embodied Energy, MJ/kg 110
84
Embodied Water, L/kg 400
200

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 2720
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 31 to 56
26
Strength to Weight: Bending, points 25 to 37
23
Thermal Shock Resistance, points 25 to 44
17

Alloy Composition

Boron (B), % 0 to 0.0010
0
Carbon (C), % 0 to 0.15
0 to 0.020
Chromium (Cr), % 18.5 to 21.5
19 to 21
Cobalt (Co), % 39 to 42
0
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 7.6 to 20
42.7 to 50.4
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
6.0 to 7.0
Nickel (Ni), % 15 to 18
24 to 26
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 1.2
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010