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ACI-ASTM CB7Cu-1 Steel vs. AWS ERNiCrFe-6

ACI-ASTM CB7Cu-1 steel belongs to the iron alloys classification, while AWS ERNiCrFe-6 belongs to the nickel alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 ACI-ASTM CB7Cu-1 steel and the bottom bar is AWS ERNiCrFe-6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.7 to 11
34
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
630

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1430
1370
Melting Onset (Solidus), °C 1500
1320
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 17
13
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
55
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.6
9.8
Embodied Energy, MJ/kg 38
140
Embodied Water, L/kg 130
260

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 34 to 48
21
Strength to Weight: Bending, points 28 to 35
19
Thermal Diffusivity, mm2/s 4.6
3.3
Thermal Shock Resistance, points 32 to 45
19

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 15.5 to 17.7
14 to 17
Copper (Cu), % 2.5 to 3.2
0 to 0.5
Iron (Fe), % 72.3 to 78.4
0 to 8.0
Manganese (Mn), % 0 to 0.7
2.0 to 2.7
Nickel (Ni), % 3.6 to 4.6
67 to 81.5
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.5
Residuals, % 0
0 to 0.5