AWS E320 vs. AWS E320LR
Both AWS E320 and AWS E320LR are iron alloys. Both are furnished in the as-welded condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is AWS E320 and the bottom bar is AWS E320LR.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 34 | |
| 34 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 620 | |
| 580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 300 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1410 |
| Melting Onset (Solidus), °C | 1360 | |
| 1360 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 460 |
| Thermal Expansion, µm/m-K | 14 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 38 | |
| 36 |
| Density, g/cm3 | 8.2 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 6.5 | |
| 6.2 |
| Embodied Energy, MJ/kg | 91 | |
| 87 |
| Embodied Water, L/kg | 220 | |
| 220 |
Common Calculations
| PREN (Pitting Resistance) | 28 | |
| 28 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 | |
| 20 |
| Strength to Weight: Bending, points | 20 | |
| 19 |
| Thermal Shock Resistance, points | 16 | |
| 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.030 |
| Chromium (Cr), % | 19 to 21 | |
| 19 to 21 |
| Copper (Cu), % | 3.0 to 4.0 | |
| 3.0 to 4.0 |
| Iron (Fe), % | 31.8 to 43.5 | |
| 32.7 to 42.5 |
| Manganese (Mn), % | 0.5 to 2.5 | |
| 1.5 to 2.5 |
| Molybdenum (Mo), % | 2.0 to 3.0 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 32 to 36 | |
| 32 to 36 |
| Niobium (Nb), % | 0 to 1.0 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |