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AWS E308LMo vs. AWS E312

Both AWS E308LMo and AWS E312 are iron alloys. Both are furnished in the as-welded condition. They have 89% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AWS E308LMo and the bottom bar is AWS E312.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
25
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 580
740

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Base Metal Price, % relative 19
20
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.8
3.6
Embodied Energy, MJ/kg 53
52
Embodied Water, L/kg 160
200

Common Calculations

PREN (Pitting Resistance) 28
31
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
27
Strength to Weight: Bending, points 20
24
Thermal Shock Resistance, points 15
18

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.15
Chromium (Cr), % 18 to 21
28 to 32
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 59.6 to 70.5
52.3 to 63.5
Manganese (Mn), % 0.5 to 2.5
0.5 to 2.5
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.75
Nickel (Ni), % 9.0 to 12
8.0 to 10.5
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