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AWS E3155 vs. ACI-ASTM CK20 Steel

Both AWS E3155 and ACI-ASTM CK20 steel are iron alloys. They have 73% 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 AWS E3155 and the bottom bar is ACI-ASTM CK20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
37
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 770
530

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 70
25
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.7
4.4
Embodied Energy, MJ/kg 110
62
Embodied Water, L/kg 300
190

Common Calculations

PREN (Pitting Resistance) 35
26
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
3.7
Thermal Shock Resistance, points 20
13

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.2
Chromium (Cr), % 20 to 22.5
23 to 27
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 23.3 to 36.3
46.7 to 58
Manganese (Mn), % 1.0 to 2.5
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.5
Nickel (Ni), % 19 to 21
19 to 22
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 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 2.0 to 3.0
0