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ACI-ASTM CK3MCuN Steel vs. AWS E308LMo

Both ACI-ASTM CK3MCuN steel and AWS E308LMo 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 CK3MCuN steel and the bottom bar is AWS E308LMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 620
580

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 16
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 29
19
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.6
3.8
Embodied Energy, MJ/kg 76
53
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 45
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 3.2
4.2
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.040
Chromium (Cr), % 19.5 to 20.5
18 to 21
Copper (Cu), % 0.5 to 1.0
0 to 0.75
Iron (Fe), % 49.5 to 56.3
59.6 to 70.5
Manganese (Mn), % 0 to 1.2
0.5 to 2.5
Molybdenum (Mo), % 6.0 to 7.0
2.0 to 3.0
Nickel (Ni), % 17.5 to 19.5
9.0 to 12
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030