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SAE-AISI H26 Steel vs. R31539 Cobalt

SAE-AISI H26 steel belongs to the iron alloys classification, while R31539 cobalt belongs to the cobalt 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 SAE-AISI H26 steel and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
86
Tensile Strength: Ultimate (UTS), MPa 720 to 2100
1000 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Melting Completion (Liquidus), °C 1810
1360
Melting Onset (Solidus), °C 1760
1290
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 9.3
8.4
Embodied Carbon, kg CO2/kg material 8.1
8.2
Embodied Energy, MJ/kg 120
110
Embodied Water, L/kg 90
530

Common Calculations

Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 22 to 63
33 to 44
Strength to Weight: Bending, points 19 to 39
27 to 32
Thermal Diffusivity, mm2/s 5.6
3.5
Thermal Shock Resistance, points 22 to 63
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0.45 to 0.55
0 to 0.14
Chromium (Cr), % 3.8 to 4.5
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.3 to 77.5
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0 to 0.3
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 17.3 to 19
0
Vanadium (V), % 0.75 to 1.3
0

Comparable Variants