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ACI-ASTM CN7MS Steel vs. AWS E2553

Both ACI-ASTM CN7MS steel and AWS E2553 are iron alloys. They have 82% 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 E2553.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
17
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 540
850

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 28
21
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
4.0
Embodied Energy, MJ/kg 71
56
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 28
40
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
30
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 3.2
4.3
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.060
Chromium (Cr), % 18 to 20
24 to 27
Copper (Cu), % 1.5 to 2.0
1.5 to 2.5
Iron (Fe), % 45.4 to 53.5
55.2 to 64.5
Manganese (Mn), % 0 to 1.0
0.5 to 1.5
Molybdenum (Mo), % 2.5 to 3.0
2.9 to 3.9
Nickel (Ni), % 22 to 25
6.5 to 8.5
Nitrogen (N), % 0
0.1 to 0.25
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