MakeItFrom.com
Menu (ESC)

SAE-AISI M34 Steel vs. R31537 Cobalt

SAE-AISI M34 steel belongs to the iron alloys classification, while R31537 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 M34 steel and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
87
Tensile Strength: Ultimate (UTS), MPa 800 to 2170
1000 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1540
1360
Melting Onset (Solidus), °C 1500
1290
Specific Heat Capacity, J/kg-K 450
450
Thermal Conductivity, W/m-K 24
13
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.4
Embodied Carbon, kg CO2/kg material 9.5
8.1
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 150
530

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 74
33 to 44
Strength to Weight: Bending, points 23 to 46
26 to 32
Thermal Diffusivity, mm2/s 6.7
3.4
Thermal Shock Resistance, points 25 to 67
24 to 32

Alloy Composition

Carbon (C), % 0.85 to 0.92
0 to 0.14
Chromium (Cr), % 3.5 to 4.0
26 to 30
Cobalt (Co), % 7.8 to 8.8
58.9 to 69
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 71.3 to 76.5
0 to 0.75
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 7.8 to 9.2
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), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.9 to 2.3
0

Comparable Variants