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Grade N7M Nickel vs. SAE-AISI M3 Class 1 Steel

Grade N7M nickel belongs to the nickel alloys classification, while SAE-AISI M3 class 1 steel belongs to the iron alloys. There are 19 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 grade N7M nickel and the bottom bar is SAE-AISI M3 class 1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 85
77
Tensile Strength: Ultimate (UTS), MPa 590
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1650
1610
Melting Onset (Solidus), °C 1590
1570
Specific Heat Capacity, J/kg-K 390
440
Thermal Expansion, µm/m-K 9.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
25
Density, g/cm3 9.3
8.3
Embodied Carbon, kg CO2/kg material 16
10
Embodied Energy, MJ/kg 200
150
Embodied Water, L/kg 270
100

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 18
26 to 72
Strength to Weight: Bending, points 17
22 to 44
Thermal Shock Resistance, points 19
24 to 67

Alloy Composition

Carbon (C), % 0 to 0.070
1.0 to 1.1
Chromium (Cr), % 0 to 1.0
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
76.9 to 82.9
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 30 to 33
4.8 to 6.5
Nickel (Ni), % 60.9 to 70
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.3 to 2.8