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AWS E308L vs. AWS E310Nb

Both AWS E308L and AWS E310Nb are iron alloys. Both are furnished in the as-welded condition. They have 81% of their average alloy composition in common.

For each property being compared, the top bar is AWS E308L and the bottom bar is AWS E310Nb.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
29
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 580
620

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
31
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
5.3
Embodied Energy, MJ/kg 46
76
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 21
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
22
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.1
3.8
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.12
Chromium (Cr), % 18 to 21
25 to 28
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 62.9 to 72.5
44.1 to 53.3
Manganese (Mn), % 0.5 to 2.5
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.75
0 to 0.75
Nickel (Ni), % 9.0 to 11
20 to 22
Niobium (Nb), % 0
0.7 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030