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AWS E630 vs. AWS E310Mo

Both AWS E630 and AWS E310Mo are iron alloys. They have 70% of their average alloy composition in common.

For each property being compared, the top bar is AWS E630 and the bottom bar is AWS E310Mo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0
34
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 1040
620

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
5.1
Embodied Energy, MJ/kg 40
71
Embodied Water, L/kg 140
210

Common Calculations

PREN (Pitting Resistance) 18
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 37
22
Strength to Weight: Bending, points 29
20
Thermal Diffusivity, mm2/s 4.5
3.7
Thermal Shock Resistance, points 28
15

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.12
Chromium (Cr), % 16 to 16.8
25 to 28
Copper (Cu), % 3.3 to 4.0
0 to 0.75
Iron (Fe), % 71.6 to 75.9
42.8 to 52
Manganese (Mn), % 0.25 to 0.75
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.75
2.0 to 3.0
Nickel (Ni), % 4.5 to 5.0
20 to 22
Niobium (Nb), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030