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AWS ERNiCrMo-3 vs. ACI-ASTM CB7Cu-1 Steel

AWS ERNiCrMo-3 belongs to the nickel alloys classification, while ACI-ASTM CB7Cu-1 steel belongs to the iron 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 AWS ERNiCrMo-3 and the bottom bar is ACI-ASTM CB7Cu-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
5.7 to 11
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 870
960 to 1350

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Melting Completion (Liquidus), °C 1480
1430
Melting Onset (Solidus), °C 1430
1500
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 80
13
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
2.6
Embodied Energy, MJ/kg 190
38
Embodied Water, L/kg 290
130

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
34 to 48
Strength to Weight: Bending, points 24
28 to 35
Thermal Diffusivity, mm2/s 2.8
4.6
Thermal Shock Resistance, points 25
32 to 45

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.010
0 to 0.070
Chromium (Cr), % 20 to 23
15.5 to 17.7
Copper (Cu), % 0 to 0.5
2.5 to 3.2
Iron (Fe), % 0 to 5.0
72.3 to 78.4
Manganese (Mn), % 0 to 0.5
0 to 0.7
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 58 to 68.9
3.6 to 4.6
Niobium (Nb), % 3.2 to 4.2
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0
Residuals, % 0 to 0.5
0