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AWS E310Nb vs. AWS E630

Both AWS E310Nb and AWS E630 are iron alloys. They have 72% of their average alloy composition in common.

For each property being compared, the top bar is AWS E310Nb and the bottom bar is AWS E630.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
8.0
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 620
1040

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
17
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 31
14
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.3
2.8
Embodied Energy, MJ/kg 76
40
Embodied Water, L/kg 200
140

Common Calculations

PREN (Pitting Resistance) 28
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
37
Strength to Weight: Bending, points 20
29
Thermal Diffusivity, mm2/s 3.8
4.5
Thermal Shock Resistance, points 15
28

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.050
Chromium (Cr), % 25 to 28
16 to 16.8
Copper (Cu), % 0 to 0.75
3.3 to 4.0
Iron (Fe), % 44.1 to 53.3
71.6 to 75.9
Manganese (Mn), % 1.0 to 2.5
0.25 to 0.75
Molybdenum (Mo), % 0 to 0.75
0 to 0.75
Nickel (Ni), % 20 to 22
4.5 to 5.0
Niobium (Nb), % 0.7 to 1.0
0.15 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030