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AWS E308LMo vs. ACI-ASTM CK3MCuN Steel

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

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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