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SAE-AISI M62 Steel vs. R30605 Cobalt

SAE-AISI M62 steel belongs to the iron alloys classification, while R30605 cobalt belongs to the cobalt alloys. There are 18 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 SAE-AISI M62 steel and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
81
Tensile Strength: Ultimate (UTS), MPa 830 to 2440
1130 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1650
1410
Melting Onset (Solidus), °C 1600
1330
Specific Heat Capacity, J/kg-K 430
410
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.5
9.6
Embodied Carbon, kg CO2/kg material 10
9.8
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 110
450

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 27 to 80
33 to 55
Strength to Weight: Bending, points 23 to 47
25 to 36
Thermal Shock Resistance, points 24 to 71
31 to 52

Alloy Composition

Carbon (C), % 1.3 to 1.4
0.050 to 0.15
Chromium (Cr), % 3.5 to 4.0
19 to 21
Cobalt (Co), % 0
46.4 to 57
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.6 to 77.4
0 to 3.0
Manganese (Mn), % 0.15 to 0.4
1.0 to 2.0
Molybdenum (Mo), % 10 to 11
0
Nickel (Ni), % 0 to 0.3
9.0 to 11
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.8 to 6.5
14 to 16
Vanadium (V), % 1.8 to 2.1
0

Comparable Variants