AWS E307 vs. AWS E349
Both AWS E307 and AWS E349 are iron alloys. Both are furnished in the as-welded condition. They have a very high 96% of their average alloy composition in common.
For each property being compared, the top bar is AWS E307 and the bottom bar is AWS E349.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 34 | |
| 29 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 660 | |
| 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1470 |
| Melting Onset (Solidus), °C | 1370 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 15 |
| Thermal Expansion, µm/m-K | 14 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 2.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.4 | |
| 2.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 17 | |
| 25 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.5 | |
| 4.9 |
| Embodied Energy, MJ/kg | 49 | |
| 72 |
| Embodied Water, L/kg | 160 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 23 | |
| 24 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 24 | |
| 27 |
| Strength to Weight: Bending, points | 22 | |
| 24 |
| Thermal Diffusivity, mm2/s | 4.1 | |
| 4.1 |
| Thermal Shock Resistance, points | 17 | |
| 20 |
Alloy Composition
| Carbon (C), % | 0.040 to 0.14 | |
| 0 to 0.13 |
| Chromium (Cr), % | 18 to 21.5 | |
| 18 to 21 |
| Copper (Cu), % | 0 to 0.75 | |
| 0 to 0.75 |
| Iron (Fe), % | 59.6 to 69.2 | |
| 60.5 to 71.1 |
| Manganese (Mn), % | 3.3 to 4.8 | |
| 0.5 to 2.5 |
| Molybdenum (Mo), % | 0.5 to 1.5 | |
| 0.35 to 0.65 |
| Nickel (Ni), % | 9.0 to 10.7 | |
| 8.0 to 10 |
| Niobium (Nb), % | 0 | |
| 0.75 to 1.2 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 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 |