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EN 1.4931 Steel vs. Grade N7M Nickel

EN 1.4931 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 (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4931 steel and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 17
22
Fatigue Strength, MPa 410
190
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 76
85
Tensile Strength: Ultimate (UTS), MPa 810
590
Tensile Strength: Yield (Proof), MPa 620
310

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 600
900
Melting Completion (Liquidus), °C 1460
1650
Melting Onset (Solidus), °C 1420
1590
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 14
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
75
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 2.9
16
Embodied Energy, MJ/kg 42
200
Embodied Water, L/kg 100
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 970
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 29
18
Strength to Weight: Bending, points 25
17
Thermal Shock Resistance, points 22
19

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.070
Chromium (Cr), % 11.3 to 12.2
0 to 1.0
Iron (Fe), % 83.2 to 86.8
0 to 3.0
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 1.0 to 1.2
30 to 33
Nickel (Ni), % 0 to 1.0
60.9 to 70
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0