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SAE-AISI 5150 Steel vs. Grade N7M Nickel

SAE-AISI 5150 steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5150 steel and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 21
22
Fatigue Strength, MPa 240
190
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
85
Tensile Strength: Ultimate (UTS), MPa 580
590
Tensile Strength: Yield (Proof), MPa 350
310

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
900
Melting Completion (Liquidus), °C 1460
1650
Melting Onset (Solidus), °C 1410
1590
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 13
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
75
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 1.4
16
Embodied Energy, MJ/kg 19
200
Embodied Water, L/kg 49
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 320
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 20
18
Strength to Weight: Bending, points 20
17
Thermal Shock Resistance, points 17
19

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.070
Chromium (Cr), % 0.7 to 0.9
0 to 1.0
Iron (Fe), % 97.2 to 98
0 to 3.0
Manganese (Mn), % 0.7 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 0
60.9 to 70
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030