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Grade N7M Nickel vs. S44800 Stainless Steel

Grade N7M nickel belongs to the nickel alloys classification, while S44800 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 22
23
Fatigue Strength, MPa 190
300
Poisson's Ratio 0.31
0.27
Shear Modulus, GPa 85
82
Tensile Strength: Ultimate (UTS), MPa 590
590
Tensile Strength: Yield (Proof), MPa 310
450

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1650
1460
Melting Onset (Solidus), °C 1590
1410
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 9.9
11

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 9.3
7.8
Embodied Carbon, kg CO2/kg material 16
3.8
Embodied Energy, MJ/kg 200
52
Embodied Water, L/kg 270
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 220
480
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 18
21
Strength to Weight: Bending, points 17
20
Thermal Shock Resistance, points 19
19

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.010
Chromium (Cr), % 0 to 1.0
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 0 to 3.0
62.6 to 66.5
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 30 to 33
3.5 to 4.2
Nickel (Ni), % 60.9 to 70
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020