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ACI-ASTM CD4MCuN Steel vs. AWS E240

Both ACI-ASTM CD4MCuN steel and AWS E240 are iron alloys. They have 88% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD4MCuN steel and the bottom bar is AWS E240.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
17
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 770
770

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1380
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 18
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.5
3.0
Embodied Energy, MJ/kg 49
42
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 35
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
28
Strength to Weight: Bending, points 24
24
Thermal Diffusivity, mm2/s 4.5
3.9
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.060
Chromium (Cr), % 24.5 to 26.5
17 to 19
Copper (Cu), % 2.7 to 3.3
0 to 0.75
Iron (Fe), % 59.5 to 66.3
58.6 to 68.4
Manganese (Mn), % 0 to 1.0
10.5 to 13.5
Molybdenum (Mo), % 1.7 to 2.3
0 to 0.75
Nickel (Ni), % 4.7 to 6.0
4.0 to 6.0
Nitrogen (N), % 0.1 to 0.25
0.1 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030