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ACI-ASTM CD3MWCuN Steel vs. AWS ER80S-Ni3

Both ACI-ASTM CD3MWCuN steel and AWS ER80S-Ni3 are iron alloys. They have 66% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MWCuN steel and the bottom bar is AWS ER80S-Ni3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
27
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 790
630
Tensile Strength: Yield (Proof), MPa 500
530

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 22
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.7
Embodied Energy, MJ/kg 58
23
Embodied Water, L/kg 180
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
160
Resilience: Unit (Modulus of Resilience), kJ/m3 620
740
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.2
14
Thermal Shock Resistance, points 22
19

Alloy Composition


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Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0.5 to 1.0
0 to 0.35
Iron (Fe), % 56.6 to 65.3
93.2 to 96.6
Manganese (Mn), % 0 to 1.5
0 to 1.3
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 6.5 to 8.5
3.0 to 3.8
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.0
0.4 to 0.8
Sulfur (S), % 0 to 0.025
0 to 0.025
Tungsten (W), % 0.5 to 1.0
0
Residuals, % 0
0 to 0.5