MakeItFrom.com
Menu (ESC)

R30816 Cobalt vs. SAE-AISI H12 Steel

R30816 cobalt belongs to the cobalt alloys classification, while SAE-AISI H12 steel belongs to the iron alloys. There are 20 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 R30816 cobalt and the bottom bar is SAE-AISI H12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 81
75
Tensile Strength: Ultimate (UTS), MPa 1020
690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1540
1480
Melting Onset (Solidus), °C 1460
1440
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 13
36
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.1
7.9
Embodied Carbon, kg CO2/kg material 20
2.9
Embodied Energy, MJ/kg 320
41
Embodied Water, L/kg 440
76

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 31
24 to 65
Strength to Weight: Bending, points 25
22 to 42
Thermal Diffusivity, mm2/s 3.3
9.8
Thermal Shock Resistance, points 28
22 to 60

Alloy Composition

Carbon (C), % 0.32 to 0.42
0.3 to 0.4
Chromium (Cr), % 19 to 21
4.8 to 5.5
Cobalt (Co), % 40 to 49.8
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 5.0
87.8 to 91.7
Manganese (Mn), % 1.0 to 2.0
0.2 to 0.5
Molybdenum (Mo), % 3.5 to 4.5
1.3 to 1.8
Nickel (Ni), % 19 to 21
0 to 0.3
Niobium (Nb), % 3.5 to 4.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.8 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 3.5 to 4.5
0
Tungsten (W), % 3.5 to 4.5
1.0 to 1.7
Vanadium (V), % 0
0 to 0.5