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AWS E309LMo vs. ACI-ASTM CF3M Steel

Both AWS E309LMo and ACI-ASTM CF3M steel are iron alloys. They have a moderately high 92% 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 E309LMo and the bottom bar is ACI-ASTM CF3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
55
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 580
520

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 22
19
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.2
3.8
Embodied Energy, MJ/kg 59
53
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 32
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 3.9
4.3
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 22 to 25
17 to 21
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 53.6 to 63.5
59.9 to 72
Manganese (Mn), % 0.5 to 2.5
0 to 1.5
Molybdenum (Mo), % 2.0 to 3.0
2.0 to 3.0
Nickel (Ni), % 12 to 14
9.0 to 13
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