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AWS E309LMo vs. S32803 Stainless Steel

Both AWS E309LMo and S32803 stainless steel are iron alloys. They have 88% 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 S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 34
18
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
81
Tensile Strength: Ultimate (UTS), MPa 580
680

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 22
19
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.2
3.7
Embodied Energy, MJ/kg 59
53
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 32
36
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.9
4.4
Thermal Shock Resistance, points 15
22

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.015
Chromium (Cr), % 22 to 25
28 to 29
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 53.6 to 63.5
62.9 to 67.1
Manganese (Mn), % 0.5 to 2.5
0 to 0.5
Molybdenum (Mo), % 2.0 to 3.0
1.8 to 2.5
Nickel (Ni), % 12 to 14
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.0035