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AWS E630 vs. AWS E349

Both AWS E630 and AWS E349 are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is AWS E630 and the bottom bar is AWS E349.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0
29
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 1040
770

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 14
14

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 14
25
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
4.9
Embodied Energy, MJ/kg 40
72
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 18
24
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 37
27
Strength to Weight: Bending, points 29
24
Thermal Diffusivity, mm2/s 4.5
4.1
Thermal Shock Resistance, points 28
20

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.13
Chromium (Cr), % 16 to 16.8
18 to 21
Copper (Cu), % 3.3 to 4.0
0 to 0.75
Iron (Fe), % 71.6 to 75.9
60.5 to 71.1
Manganese (Mn), % 0.25 to 0.75
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.75
0.35 to 0.65
Nickel (Ni), % 4.5 to 5.0
8.0 to 10
Niobium (Nb), % 0.15 to 0.3
0.75 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.15
Tungsten (W), % 0
1.3 to 1.8
Vanadium (V), % 0
0.1 to 0.3