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AWS E308LMo vs. EN 1.4945 Stainless Steel

Both AWS E308LMo and EN 1.4945 stainless steel are iron alloys. They have a moderately high 90% 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 1.4945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
19 to 34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 580
640 to 740

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Melting Completion (Liquidus), °C 1440
1490
Melting Onset (Solidus), °C 1400
1440
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 19
30
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 3.8
5.0
Embodied Energy, MJ/kg 53
73
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 28
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
22 to 25
Strength to Weight: Bending, points 20
20 to 22
Thermal Diffusivity, mm2/s 4.2
3.7
Thermal Shock Resistance, points 15
14 to 16

Alloy Composition

Carbon (C), % 0 to 0.040
0.040 to 0.1
Chromium (Cr), % 18 to 21
15.5 to 17.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 70.5
57.9 to 65.7
Manganese (Mn), % 0.5 to 2.5
0 to 1.5
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 9.0 to 12
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0
2.5 to 3.5