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AWS E310Nb vs. AWS E385

Both AWS E310Nb and AWS E385 are iron alloys. Both are furnished in the as-welded condition. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is AWS E310Nb and the bottom bar is AWS E385.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 620
580

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 14
14
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 31
31
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.3
5.8
Embodied Energy, MJ/kg 76
79
Embodied Water, L/kg 200
200

Common Calculations

PREN (Pitting Resistance) 28
36
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 3.8
3.6
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.030
Chromium (Cr), % 25 to 28
19.5 to 21.5
Copper (Cu), % 0 to 0.75
1.2 to 2.0
Iron (Fe), % 44.1 to 53.3
41.8 to 50.1
Manganese (Mn), % 1.0 to 2.5
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.75
4.2 to 5.2
Nickel (Ni), % 20 to 22
24 to 26
Niobium (Nb), % 0.7 to 1.0
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.020