MakeItFrom.com
Menu (ESC)

SAE-AISI H11 Steel vs. R30021 Cobalt

SAE-AISI H11 steel belongs to the iron alloys classification, while R30021 cobalt belongs to the cobalt alloys. There are 22 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 H11 steel and the bottom bar is R30021 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
86
Tensile Strength: Ultimate (UTS), MPa 690 to 1840
700

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1460
1350
Melting Onset (Solidus), °C 1410
1190
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 42
15
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.5
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 3.0
8.0
Embodied Energy, MJ/kg 43
110
Embodied Water, L/kg 75
520

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 66
23
Strength to Weight: Bending, points 22 to 43
21
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 22 to 58
21

Alloy Composition

Carbon (C), % 0.33 to 0.43
0.2 to 0.35
Chromium (Cr), % 4.8 to 5.5
26 to 29
Cobalt (Co), % 0
61.7 to 67.3
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 89.6 to 92.5
0 to 3.0
Manganese (Mn), % 0.2 to 0.5
0
Molybdenum (Mo), % 1.1 to 1.6
4.5 to 6.0
Nickel (Ni), % 0 to 0.3
2.0 to 3.0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.8 to 1.2
0 to 1.5
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.3 to 0.6
0