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AWS E308LMo vs. EN 1.4581 Stainless Steel

Both AWS E308LMo and EN 1.4581 stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS E308LMo and the bottom bar is EN 1.4581 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
28
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 580
510

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 14
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
21
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
4.2
Embodied Energy, MJ/kg 53
59
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 28
26
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 4.2
3.9
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.070
Chromium (Cr), % 18 to 21
18 to 20
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 70.5
61.4 to 71
Manganese (Mn), % 0.5 to 2.5
0 to 1.5
Molybdenum (Mo), % 2.0 to 3.0
2.0 to 2.5
Nickel (Ni), % 9.0 to 12
9.0 to 12
Niobium (Nb), % 0
0 to 1.0
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 0.030