ASTM A369 Grade FP21 vs. SAE-AISI 1552 Steel
Both ASTM A369 grade FP21 and SAE-AISI 1552 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM A369 grade FP21 and the bottom bar is SAE-AISI 1552 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 | |
| 220 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 11 to 14 |
| Fatigue Strength, MPa | 160 | |
| 290 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 74 | |
| 72 |
| Shear Strength, MPa | 300 | |
| 460 to 510 |
| Tensile Strength: Ultimate (UTS), MPa | 470 | |
| 760 to 840 |
| Tensile Strength: Yield (Proof), MPa | 240 | |
| 460 to 650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 470 | |
| 400 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1430 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 41 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.7 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.0 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.4 |
| Embodied Energy, MJ/kg | 23 | |
| 19 |
| Embodied Water, L/kg | 61 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 80 | |
| 81 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 | |
| 560 to 1130 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 17 | |
| 27 to 30 |
| Strength to Weight: Bending, points | 17 | |
| 24 to 25 |
| Thermal Diffusivity, mm2/s | 11 | |
| 14 |
| Thermal Shock Resistance, points | 14 | |
| 26 to 29 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.15 | |
| 0.47 to 0.55 |
| Chromium (Cr), % | 2.7 to 3.4 | |
| 0 |
| Iron (Fe), % | 94.3 to 96.2 | |
| 97.9 to 98.3 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 1.2 to 1.5 |
| Molybdenum (Mo), % | 0.8 to 1.1 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.050 |