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AWS E309LMo vs. S39277 Stainless Steel

Both AWS E309LMo and S39277 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 25 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 E309LMo and the bottom bar is S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
28
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 580
930

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 22
23
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.2
4.2
Embodied Energy, MJ/kg 59
59
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 32
43
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
33
Strength to Weight: Bending, points 20
27
Thermal Diffusivity, mm2/s 3.9
4.2
Thermal Shock Resistance, points 15
26

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.025
Chromium (Cr), % 22 to 25
24 to 26
Copper (Cu), % 0 to 0.75
1.2 to 2.0
Iron (Fe), % 53.6 to 63.5
56.8 to 64.3
Manganese (Mn), % 0.5 to 2.5
0 to 0.8
Molybdenum (Mo), % 2.0 to 3.0
3.0 to 4.0
Nickel (Ni), % 12 to 14
6.5 to 8.0
Nitrogen (N), % 0
0.23 to 0.33
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.0020
Tungsten (W), % 0
0.8 to 1.2