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SAE-AISI M36 Steel vs. R30035 Cobalt

SAE-AISI M36 steel belongs to the iron alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 21 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 M36 steel and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
84 to 89
Tensile Strength: Ultimate (UTS), MPa 810 to 2190
900 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1600
1440
Melting Onset (Solidus), °C 1550
1320
Specific Heat Capacity, J/kg-K 440
440
Thermal Conductivity, W/m-K 19
11
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 38
100
Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 9.5
10
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 140
410

Common Calculations

Stiffness to Weight: Axial, points 13
14 to 15
Stiffness to Weight: Bending, points 23
23 to 24
Strength to Weight: Axial, points 27 to 72
29 to 61
Strength to Weight: Bending, points 23 to 44
24 to 39
Thermal Diffusivity, mm2/s 5.1
3.0
Thermal Shock Resistance, points 25 to 68
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0.8 to 0.9
0 to 0.025
Chromium (Cr), % 3.8 to 4.5
19 to 21
Cobalt (Co), % 7.8 to 8.8
29.1 to 39
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70.1 to 75.5
0 to 1.0
Manganese (Mn), % 0.15 to 0.4
0 to 0.15
Molybdenum (Mo), % 4.6 to 5.5
9.0 to 10.5
Nickel (Ni), % 0 to 0.3
33 to 37
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.2 to 0.45
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Tungsten (W), % 5.5 to 6.5
0
Vanadium (V), % 1.8 to 2.3
0

Comparable Variants