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R30003 Cobalt vs. SAE-AISI H43 Steel

R30003 cobalt belongs to the cobalt alloys classification, while SAE-AISI H43 steel belongs to the iron alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is SAE-AISI H43 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 83
77
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
710 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1400
1530
Melting Onset (Solidus), °C 1440
1480
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
30
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 95
14
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.0
8.2
Embodied Energy, MJ/kg 110
120
Embodied Water, L/kg 400
100

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32 to 57
25 to 75
Strength to Weight: Bending, points 26 to 38
22 to 46
Thermal Diffusivity, mm2/s 3.3
8.3
Thermal Shock Resistance, points 26 to 45
21 to 62

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0.5 to 0.65
Chromium (Cr), % 19 to 21
3.8 to 4.5
Cobalt (Co), % 39 to 41
0
Iron (Fe), % 10 to 20.5
83.2 to 85.9
Manganese (Mn), % 1.5 to 2.5
0.15 to 0.4
Molybdenum (Mo), % 6.0 to 8.0
7.8 to 8.5
Nickel (Ni), % 14 to 16
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 1.2
0.2 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2

Comparable Variants