AWS E309Nb vs. AWS E2553
Both AWS E309Nb and AWS E2553 are iron alloys. Both are furnished in the as-welded condition. They have a moderately high 93% of their average alloy composition in common.
For each property being compared, the top bar is AWS E309Nb and the bottom bar is AWS E2553.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 34 | |
| 17 |
| Poisson's Ratio | 0.28 | |
| 0.27 |
| Shear Modulus, GPa | 78 | |
| 80 |
| Tensile Strength: Ultimate (UTS), MPa | 620 | |
| 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 300 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1440 |
| Melting Onset (Solidus), °C | 1380 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 15 | |
| 16 |
| Thermal Expansion, µm/m-K | 14 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.4 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 21 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.4 | |
| 4.0 |
| Embodied Energy, MJ/kg | 64 | |
| 56 |
| Embodied Water, L/kg | 180 | |
| 190 |
Common Calculations
| PREN (Pitting Resistance) | 25 | |
| 40 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 22 | |
| 30 |
| Strength to Weight: Bending, points | 21 | |
| 26 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 4.3 |
| Thermal Shock Resistance, points | 16 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.12 | |
| 0 to 0.060 |
| Chromium (Cr), % | 22 to 25 | |
| 24 to 27 |
| Copper (Cu), % | 0 to 0.75 | |
| 1.5 to 2.5 |
| Iron (Fe), % | 54.8 to 64.8 | |
| 55.2 to 64.5 |
| Manganese (Mn), % | 0.5 to 2.5 | |
| 0.5 to 1.5 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 2.9 to 3.9 |
| Nickel (Ni), % | 12 to 14 | |
| 6.5 to 8.5 |
| Niobium (Nb), % | 0.7 to 1.0 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0.1 to 0.25 |
| 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 |