ASTM A369 Grade FP21 vs. AWS ENiCrFe-3
ASTM A369 grade FP21 belongs to the iron alloys classification, while AWS ENiCrFe-3 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is ASTM A369 grade FP21 and the bottom bar is AWS ENiCrFe-3.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 34 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 74 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 470 | |
| 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 310 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1370 |
| Melting Onset (Solidus), °C | 1430 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 460 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.0 | |
| 65 |
| Density, g/cm3 | 7.8 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 11 |
| Embodied Energy, MJ/kg | 23 | |
| 150 |
| Embodied Water, L/kg | 61 | |
| 260 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 17 | |
| 21 |
| Strength to Weight: Bending, points | 17 | |
| 19 |
| Thermal Shock Resistance, points | 14 | |
| 18 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.1 |
| Chromium (Cr), % | 2.7 to 3.4 | |
| 13 to 17 |
| Cobalt (Co), % | 0 | |
| 0 to 0.12 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 94.3 to 96.2 | |
| 0 to 10 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 5.0 to 9.5 |
| Molybdenum (Mo), % | 0.8 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 52 to 81 |
| Niobium (Nb), % | 0 | |
| 1.0 to 2.5 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.015 |
| Tantalum (Ta), % | 0 | |
| 0 to 0.3 |
| Titanium (Ti), % | 0 | |
| 0 to 1.0 |
| Residuals, % | 0 | |
| 0 to 0.5 |