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AWS E3155 vs. ACI-ASTM CG8M Steel

Both AWS E3155 and ACI-ASTM CG8M steel are iron alloys. They have 65% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E3155 and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
45
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
79
Tensile Strength: Ultimate (UTS), MPa 770
550

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
16
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
20
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 7.7
4.1
Embodied Energy, MJ/kg 110
56
Embodied Water, L/kg 300
160

Common Calculations

PREN (Pitting Resistance) 35
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 3.3
4.3
Thermal Shock Resistance, points 20
12

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 20 to 22.5
18 to 21
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 23.3 to 36.3
58.8 to 70
Manganese (Mn), % 1.0 to 2.5
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.5
3.0 to 4.0
Nickel (Ni), % 19 to 21
9.0 to 13
Niobium (Nb), % 0.75 to 1.3
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
Tungsten (W), % 2.0 to 3.0
0