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Grade N7M Nickel vs. SAE-AISI 1018 Steel

Grade N7M nickel belongs to the nickel alloys classification, while SAE-AISI 1018 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 22
17 to 27
Fatigue Strength, MPa 190
180 to 270
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 590
430 to 480
Tensile Strength: Yield (Proof), MPa 310
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 900
400
Melting Completion (Liquidus), °C 1650
1460
Melting Onset (Solidus), °C 1590
1420
Specific Heat Capacity, J/kg-K 390
470
Thermal Expansion, µm/m-K 9.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
1.8
Density, g/cm3 9.3
7.9
Embodied Carbon, kg CO2/kg material 16
1.4
Embodied Energy, MJ/kg 200
18
Embodied Water, L/kg 270
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 220
150 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 18
15 to 17
Strength to Weight: Bending, points 17
16 to 17
Thermal Shock Resistance, points 19
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.070
0.15 to 0.2
Chromium (Cr), % 0 to 1.0
0
Iron (Fe), % 0 to 3.0
98.8 to 99.25
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Molybdenum (Mo), % 30 to 33
0
Nickel (Ni), % 60.9 to 70
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050