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R30006 Cobalt vs. EN 1.4542 Stainless Steel

R30006 cobalt belongs to the cobalt alloys classification, while EN 1.4542 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is EN 1.4542 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
5.7 to 20
Fatigue Strength, MPa 260
370 to 640
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
76
Tensile Strength: Ultimate (UTS), MPa 900
880 to 1470
Tensile Strength: Yield (Proof), MPa 540
580 to 1300

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1290
1380
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
2.8

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 7.8
2.7
Embodied Energy, MJ/kg 110
39
Embodied Water, L/kg 500
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
62 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 670
880 to 4360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 29
31 to 52
Strength to Weight: Bending, points 24
26 to 37
Thermal Diffusivity, mm2/s 3.9
4.3
Thermal Shock Resistance, points 26
29 to 49

Alloy Composition

Carbon (C), % 0.9 to 1.4
0 to 0.070
Chromium (Cr), % 27 to 32
15 to 17
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 0 to 3.0
69.6 to 79
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0 to 1.0
0 to 0.6
Nickel (Ni), % 0 to 3.0
3.0 to 5.0
Niobium (Nb), % 0
0 to 0.45
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 4.0 to 6.0
0