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AWS E33-31 vs. ACI-ASTM CK3MCuN Steel

Both AWS E33-31 and ACI-ASTM CK3MCuN steel are iron alloys. They have 72% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS E33-31 and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 29
39
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 810
620

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1330
1350
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 36
29
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 6.0
5.6
Embodied Energy, MJ/kg 86
76
Embodied Water, L/kg 260
190

Common Calculations

PREN (Pitting Resistance) 44
45
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
21
Strength to Weight: Bending, points 24
20
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.025
Chromium (Cr), % 31 to 35
19.5 to 20.5
Copper (Cu), % 0.4 to 0.8
0.5 to 1.0
Iron (Fe), % 24.7 to 34.8
49.5 to 56.3
Manganese (Mn), % 2.5 to 4.0
0 to 1.2
Molybdenum (Mo), % 1.0 to 2.0
6.0 to 7.0
Nickel (Ni), % 30 to 32
17.5 to 19.5
Nitrogen (N), % 0.3 to 0.5
0.18 to 0.24
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 0.9
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.010