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ACI-ASTM CN7M Steel vs. AWS E310H

Both ACI-ASTM CN7M steel and AWS E310H are iron alloys. They have 87% 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 ACI-ASTM CN7M steel and the bottom bar is AWS E310H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
11
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 480
690

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1450
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 21
14
Thermal Expansion, µm/m-K 15
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 32
26
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.6
4.6
Embodied Energy, MJ/kg 78
65
Embodied Water, L/kg 210
200

Common Calculations

PREN (Pitting Resistance) 29
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 5.6
3.8
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0 to 0.070
0.35 to 0.45
Chromium (Cr), % 19 to 22
25 to 28
Copper (Cu), % 3.0 to 4.0
0 to 0.75
Iron (Fe), % 37.4 to 48.5
44.2 to 53.7
Manganese (Mn), % 0 to 1.5
1.0 to 2.5
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.75
Nickel (Ni), % 27.5 to 30.5
20 to 22.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030