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ACI-ASTM CK20 Steel vs. AWS E2594

Both ACI-ASTM CK20 steel and AWS E2594 are iron alloys. They have 88% 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 CK20 steel and the bottom bar is AWS E2594.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 37
17
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
81
Tensile Strength: Ultimate (UTS), MPa 530
850

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 15
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 25
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
4.3
Embodied Energy, MJ/kg 62
60
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 26
43
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
30
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 3.7
4.3
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.040
Chromium (Cr), % 23 to 27
24 to 27
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 46.7 to 58
53.8 to 63.8
Manganese (Mn), % 0 to 2.0
0.5 to 2.0
Molybdenum (Mo), % 0 to 0.5
3.5 to 4.5
Nickel (Ni), % 19 to 22
8.0 to 10.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030