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AWS ERNiCrFe-6 vs. ACI-ASTM CG8M Steel

AWS ERNiCrFe-6 belongs to the nickel alloys classification, while ACI-ASTM CG8M steel belongs to the iron alloys. They have a modest 31% 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 (9, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCrFe-6 and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
45
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
79
Tensile Strength: Ultimate (UTS), MPa 630
550

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1370
1450
Melting Onset (Solidus), °C 1320
1400
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 55
20
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 9.8
4.1
Embodied Energy, MJ/kg 140
56
Embodied Water, L/kg 260
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 3.3
4.3
Thermal Shock Resistance, points 19
12

Alloy Composition


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Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 14 to 17
18 to 21
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 8.0
58.8 to 70
Manganese (Mn), % 2.0 to 2.7
0 to 1.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 67 to 81.5
9.0 to 13
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Titanium (Ti), % 2.5 to 3.5
0
Residuals, % 0 to 0.5
0