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ACI-ASTM CN7MS Steel vs. AWS E330H

Both ACI-ASTM CN7MS steel and AWS E330H are iron alloys. They have 87% of their average alloy composition in common. There are 23 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 ACI-ASTM CN7MS steel and the bottom bar is AWS E330H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
11
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 540
690

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1350
1350
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
30
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.1
5.4
Embodied Energy, MJ/kg 71
76
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 28
17
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 13
19

Alloy Composition

Carbon (C), % 0 to 0.070
0.35 to 0.45
Chromium (Cr), % 18 to 20
14 to 17
Copper (Cu), % 1.5 to 2.0
0 to 0.75
Iron (Fe), % 45.4 to 53.5
40.5 to 51.7
Manganese (Mn), % 0 to 1.0
1.0 to 2.5
Molybdenum (Mo), % 2.5 to 3.0
0 to 0.75
Nickel (Ni), % 22 to 25
33 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030