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ACI-ASTM CN7MS Steel vs. Nickel 242

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while nickel 242 belongs to the nickel alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. 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 nickel 242.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 39
45
Fatigue Strength, MPa 200
300
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
84
Tensile Strength: Ultimate (UTS), MPa 540
820
Tensile Strength: Yield (Proof), MPa 230
350

Thermal Properties

Latent Heat of Fusion, J/g 340
330
Maximum Temperature: Mechanical, °C 1040
930
Melting Completion (Liquidus), °C 1400
1380
Melting Onset (Solidus), °C 1350
1290
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 12
11
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 28
75
Density, g/cm3 7.9
9.0
Embodied Carbon, kg CO2/kg material 5.1
14
Embodied Energy, MJ/kg 71
180
Embodied Water, L/kg 180
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
300
Resilience: Unit (Modulus of Resilience), kJ/m3 140
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 3.2
3.1
Thermal Shock Resistance, points 13
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 18 to 20
7.0 to 9.0
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 1.5 to 2.0
0 to 0.5
Iron (Fe), % 45.4 to 53.5
0 to 2.0
Manganese (Mn), % 0 to 1.0
0 to 0.8
Molybdenum (Mo), % 2.5 to 3.0
24 to 26
Nickel (Ni), % 22 to 25
59.3 to 69
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 2.5 to 3.5
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.015