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Grade N7M Nickel vs. S40977 Stainless Steel

Grade N7M nickel belongs to the nickel alloys classification, while S40977 stainless steel belongs to the iron alloys. There are 25 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 S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 22
21
Fatigue Strength, MPa 190
200
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 85
76
Tensile Strength: Ultimate (UTS), MPa 590
510
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 900
720
Melting Completion (Liquidus), °C 1650
1440
Melting Onset (Solidus), °C 1590
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 9.9
10

Otherwise Unclassified Properties

Base Metal Price, % relative 75
6.5
Density, g/cm3 9.3
7.8
Embodied Carbon, kg CO2/kg material 16
1.9
Embodied Energy, MJ/kg 200
27
Embodied Water, L/kg 270
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
92
Resilience: Unit (Modulus of Resilience), kJ/m3 220
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 17
18
Thermal Shock Resistance, points 19
18

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 0 to 1.0
10.5 to 12.5
Iron (Fe), % 0 to 3.0
83.9 to 89.2
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 30 to 33
0
Nickel (Ni), % 60.9 to 70
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015