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SAE-AISI 1010 Steel vs. R30155 Cobalt

Both SAE-AISI 1010 steel and R30155 cobalt are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1010 steel and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
220
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 22 to 31
34
Fatigue Strength, MPa 150 to 230
310
Poisson's Ratio 0.29
0.29
Reduction in Area, % 46 to 56
34
Shear Modulus, GPa 73
81
Shear Strength, MPa 230 to 250
570
Tensile Strength: Ultimate (UTS), MPa 350 to 400
850
Tensile Strength: Yield (Proof), MPa 190 to 330
390

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 47
12
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
80
Density, g/cm3 7.9
8.5
Embodied Carbon, kg CO2/kg material 1.4
9.7
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 45
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 93
230
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 290
370
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 12 to 14
28
Strength to Weight: Bending, points 14 to 15
24
Thermal Diffusivity, mm2/s 13
3.2
Thermal Shock Resistance, points 11 to 13
21

Alloy Composition

Carbon (C), % 0.080 to 0.13
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 99.18 to 99.62
24.3 to 36.2
Manganese (Mn), % 0.3 to 0.6
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0