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ACI-ASTM CN7MS Steel vs. N06920 Nickel

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while N06920 nickel belongs to the nickel alloys. They have 65% of their average alloy composition in common. There are 27 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 ACI-ASTM CN7MS steel and the bottom bar is N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 39
39
Fatigue Strength, MPa 200
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
82
Tensile Strength: Ultimate (UTS), MPa 540
730
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Mechanical, °C 1040
990
Melting Completion (Liquidus), °C 1400
1500
Melting Onset (Solidus), °C 1350
1440
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 12
11
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
55
Density, g/cm3 7.9
8.6
Embodied Carbon, kg CO2/kg material 5.1
9.4
Embodied Energy, MJ/kg 71
130
Embodied Water, L/kg 180
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
230
Resilience: Unit (Modulus of Resilience), kJ/m3 140
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 3.2
2.8
Thermal Shock Resistance, points 13
19

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 18 to 20
20.5 to 23
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
17 to 20
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.0
8.0 to 10
Nickel (Ni), % 22 to 25
36.9 to 53.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.0 to 3.0