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AWS ERNiCrFe-6 vs. ACI-ASTM CN3MN Steel

AWS ERNiCrFe-6 belongs to the nickel alloys classification, while ACI-ASTM CN3MN steel belongs to the iron alloys. They have 45% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 34
39
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
80
Tensile Strength: Ultimate (UTS), MPa 630
620

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1370
1460
Melting Onset (Solidus), °C 1320
1410
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 55
33
Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 9.8
6.2
Embodied Energy, MJ/kg 140
84
Embodied Water, L/kg 260
200

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 3.3
3.4
Thermal Shock Resistance, points 19
14

Alloy Composition


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Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 14 to 17
20 to 22
Copper (Cu), % 0 to 0.5
0 to 0.75
Iron (Fe), % 0 to 8.0
41.4 to 50.3
Manganese (Mn), % 2.0 to 2.7
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 67 to 81.5
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 2.5 to 3.5
0
Residuals, % 0 to 0.5
0