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AWS E309Mo vs. SAE-AISI 1144 Steel

Both AWS E309Mo and SAE-AISI 1144 steel are iron alloys. They have 60% of their average alloy composition in common. There are 24 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 E309Mo and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
11 to 17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 620
750 to 840

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.4
Embodied Energy, MJ/kg 59
19
Embodied Water, L/kg 180
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
27 to 30
Strength to Weight: Bending, points 20
23 to 25
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 15
22 to 24

Alloy Composition

Carbon (C), % 0 to 0.12
0.4 to 0.48
Chromium (Cr), % 22 to 25
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 53.6 to 63.5
97.5 to 98
Manganese (Mn), % 0.5 to 2.5
1.4 to 1.7
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 12 to 14
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0.24 to 0.33