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Grade N7M Nickel vs. N08800 Stainless Steel

Grade N7M nickel belongs to the nickel alloys classification, while N08800 stainless steel belongs to the iron alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is N08800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 22
4.5 to 34
Fatigue Strength, MPa 190
150 to 390
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 85
77
Tensile Strength: Ultimate (UTS), MPa 590
500 to 1000
Tensile Strength: Yield (Proof), MPa 310
190 to 830

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1650
1390
Melting Onset (Solidus), °C 1590
1360
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 9.9
14

Otherwise Unclassified Properties

Base Metal Price, % relative 75
30
Density, g/cm3 9.3
8.0
Embodied Carbon, kg CO2/kg material 16
5.3
Embodied Energy, MJ/kg 200
76
Embodied Water, L/kg 270
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
42 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 220
96 to 1740
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 18
18 to 35
Strength to Weight: Bending, points 17
18 to 28
Thermal Shock Resistance, points 19
13 to 25

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0 to 0.070
0 to 0.1
Chromium (Cr), % 0 to 1.0
19 to 23
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 3.0
39.5 to 50.7
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 30 to 33
0
Nickel (Ni), % 60.9 to 70
30 to 35
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6