AWS ER80S-Ni3 vs. AWS ER80S-Ni2
Both AWS ER80S-Ni3 and AWS ER80S-Ni2 are iron alloys. Both are furnished in the post-weld heat treated (PWHT) condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is AWS ER80S-Ni3 and the bottom bar is AWS ER80S-Ni2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 27 | |
| 27 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 630 | |
| 620 |
| Tensile Strength: Yield (Proof), MPa | 530 | |
| 540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 260 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1450 |
| Melting Onset (Solidus), °C | 1410 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 | |
| 52 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.0 | |
| 3.4 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 1.6 |
| Embodied Energy, MJ/kg | 23 | |
| 22 |
| Embodied Water, L/kg | 52 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 | |
| 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 740 | |
| 770 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 22 | |
| 22 |
| Strength to Weight: Bending, points | 21 | |
| 21 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 19 | |
| 18 |
Alloy Composition
| Carbon (C), % | 0 to 0.12 | |
| 0 to 0.12 |
| Copper (Cu), % | 0 to 0.35 | |
| 0 to 0.35 |
| Iron (Fe), % | 93.2 to 96.6 | |
| 94.2 to 97.6 |
| Manganese (Mn), % | 0 to 1.3 | |
| 0 to 1.3 |
| Nickel (Ni), % | 3.0 to 3.8 | |
| 2.0 to 2.8 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0.4 to 0.8 | |
| 0.4 to 0.8 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |
| Residuals, % | 0 | |
| 0 to 0.5 |