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AWS E308LMo vs. AISI 446 Stainless Steel

Both AWS E308LMo and AISI 446 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS E308LMo and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
23
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 580
570

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Melting Completion (Liquidus), °C 1440
1510
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.8
2.4
Embodied Energy, MJ/kg 53
35
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 28
27
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.2
4.6
Thermal Shock Resistance, points 15
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.2
Chromium (Cr), % 18 to 21
23 to 27
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 70.5
69.2 to 77
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
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030