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SAE-AISI M6 Steel vs. Grade M30H Nickel

SAE-AISI M6 steel belongs to the iron alloys classification, while grade M30H nickel belongs to the nickel 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 M6 steel and the bottom bar is grade M30H nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
160
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 77
61
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
770

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1560
1250
Melting Onset (Solidus), °C 1510
1200
Specific Heat Capacity, J/kg-K 440
440
Thermal Conductivity, W/m-K 17
22
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
50
Density, g/cm3 8.4
8.6
Embodied Carbon, kg CO2/kg material 8.0
7.7
Embodied Energy, MJ/kg 120
110
Embodied Water, L/kg 160
250

Common Calculations

Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 28 to 73
25
Strength to Weight: Bending, points 24 to 45
22
Thermal Diffusivity, mm2/s 4.7
5.7
Thermal Shock Resistance, points 26 to 68
27

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.3
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
27 to 33
Iron (Fe), % 68.8 to 74.6
0 to 3.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0
57.9 to 70.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
2.7 to 3.7
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0