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R30605 Cobalt vs. SAE-AISI H13 Steel

R30605 cobalt belongs to the cobalt alloys classification, while SAE-AISI H13 steel belongs to the iron alloys. There are 22 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 R30605 cobalt and the bottom bar is SAE-AISI H13 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
74
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
690 to 1820

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 9.6
29
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
9.7

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.8
Embodied Carbon, kg CO2/kg material 9.8
4.3
Embodied Energy, MJ/kg 140
64
Embodied Water, L/kg 450
78

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 33 to 55
25 to 65
Strength to Weight: Bending, points 25 to 36
22 to 43
Thermal Diffusivity, mm2/s 2.5
7.8
Thermal Shock Resistance, points 31 to 52
25 to 65

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.32 to 0.45
Chromium (Cr), % 19 to 21
4.8 to 5.5
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
88.8 to 92
Manganese (Mn), % 1.0 to 2.0
0.2 to 0.5
Molybdenum (Mo), % 0
1.1 to 1.8
Nickel (Ni), % 9.0 to 11
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0.8 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0
0.8 to 1.2

Comparable Variants