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AWS E2553 vs. ACI-ASTM CN7M Steel

Both AWS E2553 and ACI-ASTM CN7M steel are iron alloys. They have 77% of their average alloy composition in common. There are 25 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 AWS E2553 and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
44
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 850
480

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 21
32
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 4.0
5.6
Embodied Energy, MJ/kg 56
78
Embodied Water, L/kg 190
210

Common Calculations

PREN (Pitting Resistance) 40
29
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 4.3
5.6
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.070
Chromium (Cr), % 24 to 27
19 to 22
Copper (Cu), % 1.5 to 2.5
3.0 to 4.0
Iron (Fe), % 55.2 to 64.5
37.4 to 48.5
Manganese (Mn), % 0.5 to 1.5
0 to 1.5
Molybdenum (Mo), % 2.9 to 3.9
2.0 to 3.0
Nickel (Ni), % 6.5 to 8.5
27.5 to 30.5
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040