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AWS E308LMo vs. AWS E316

Both AWS E308LMo and AWS E316 are iron alloys. Both are furnished in the as-welded condition. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is AWS E308LMo and the bottom bar is AWS E316.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 19
20
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.8
4.0
Embodied Energy, MJ/kg 53
55
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 28
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.2
4.0
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.080
Chromium (Cr), % 18 to 21
17 to 20
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 59.6 to 70.5
58.6 to 69.5
Manganese (Mn), % 0.5 to 2.5
0.5 to 2.5
Molybdenum (Mo), % 2.0 to 3.0
2.0 to 3.0
Nickel (Ni), % 9.0 to 12
11 to 14
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