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ACI-ASTM CN7MS Steel vs. AWS E383

Both ACI-ASTM CN7MS steel and AWS E383 are iron alloys. They have 81% of their average alloy composition in common. There are 23 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 ACI-ASTM CN7MS steel and the bottom bar is AWS E383.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 39
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 540
580

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 28
37
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.1
6.4
Embodied Energy, MJ/kg 71
89
Embodied Water, L/kg 180
240

Common Calculations

PREN (Pitting Resistance) 28
40
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 3.2
3.1
Thermal Shock Resistance, points 13
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 18 to 20
26.5 to 29
Copper (Cu), % 1.5 to 2.0
0.6 to 1.5
Iron (Fe), % 45.4 to 53.5
28.8 to 39.2
Manganese (Mn), % 0 to 1.0
0.5 to 2.5
Molybdenum (Mo), % 2.5 to 3.0
3.2 to 4.2
Nickel (Ni), % 22 to 25
30 to 33
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 2.5 to 3.5
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.020