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AWS E308LMo vs. EN 1.4938 Stainless Steel

Both AWS E308LMo and EN 1.4938 stainless steel are iron alloys. They have 82% 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 E308LMo and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
16 to 17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 580
870 to 1030

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
30
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
10
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
3.3
Embodied Energy, MJ/kg 53
47
Embodied Water, L/kg 160
110

Common Calculations

PREN (Pitting Resistance) 28
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
31 to 37
Strength to Weight: Bending, points 20
26 to 29
Thermal Diffusivity, mm2/s 4.2
8.1
Thermal Shock Resistance, points 15
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.040
0.080 to 0.15
Chromium (Cr), % 18 to 21
11 to 12.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 70.5
80.5 to 84.8
Manganese (Mn), % 0.5 to 2.5
0.4 to 0.9
Molybdenum (Mo), % 2.0 to 3.0
1.5 to 2.0
Nickel (Ni), % 9.0 to 12
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4