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ACI-ASTM CB7Cu-2 Steel vs. Grade CX2M Nickel

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while grade CX2M nickel belongs to the nickel alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is grade CX2M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 5.7 to 11
45
Fatigue Strength, MPa 420 to 590
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
84
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
550
Tensile Strength: Yield (Proof), MPa 760 to 1180
310

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Melting Completion (Liquidus), °C 1430
1500
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 17
10
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
65
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 2.6
12
Embodied Energy, MJ/kg 38
160
Embodied Water, L/kg 130
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 34 to 48
18
Strength to Weight: Bending, points 28 to 35
17
Thermal Diffusivity, mm2/s 4.6
2.7
Thermal Shock Resistance, points 32 to 45
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.020
Chromium (Cr), % 14 to 15.5
22 to 24
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
0 to 1.5
Manganese (Mn), % 0 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
15 to 16.5
Nickel (Ni), % 4.5 to 5.5
56.4 to 63
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020