ASTM A182 Grade F122 vs. ASTM A182 Grade F24
Both ASTM A182 grade F122 and ASTM A182 grade F24 are iron alloys. Both are furnished in the normalized and tempered condition. They have 88% of their average alloy composition in common.
For each property being compared, the top bar is ASTM A182 grade F122 and the bottom bar is ASTM A182 grade F24.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 23 | |
| 23 |
| Fatigue Strength, MPa | 320 | |
| 330 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Reduction in Area, % | 45 | |
| 45 |
| Shear Modulus, GPa | 76 | |
| 74 |
| Shear Strength, MPa | 450 | |
| 420 |
| Tensile Strength: Ultimate (UTS), MPa | 710 | |
| 670 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 460 |
| Melting Completion (Liquidus), °C | 1490 | |
| 1470 |
| Melting Onset (Solidus), °C | 1440 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 24 | |
| 39 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 10 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 8.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 4.0 |
| Density, g/cm3 | 8.0 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 2.3 |
| Embodied Energy, MJ/kg | 44 | |
| 33 |
| Embodied Water, L/kg | 100 | |
| 61 |
Common Calculations
| PREN (Pitting Resistance) | 17 | |
| 6.7 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 | |
| 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 520 | |
| 570 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 25 | |
| 24 |
| Strength to Weight: Bending, points | 22 | |
| 22 |
| Thermal Diffusivity, mm2/s | 6.4 | |
| 11 |
| Thermal Shock Resistance, points | 19 | |
| 19 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.020 | |
| 0 to 0.020 |
| Boron (B), % | 0 to 0.0050 | |
| 0.0015 to 0.0070 |
| Carbon (C), % | 0.070 to 0.14 | |
| 0.050 to 0.1 |
| Chromium (Cr), % | 10 to 11.5 | |
| 2.2 to 2.6 |
| Copper (Cu), % | 0.3 to 1.7 | |
| 0 |
| Iron (Fe), % | 81.3 to 87.7 | |
| 94.5 to 96.1 |
| Manganese (Mn), % | 0 to 0.7 | |
| 0.3 to 0.7 |
| Molybdenum (Mo), % | 0.25 to 0.6 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 0 to 0.5 | |
| 0 |
| Niobium (Nb), % | 0.040 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0.040 to 0.1 | |
| 0 to 0.12 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.15 to 0.45 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0.060 to 0.1 |
| Tungsten (W), % | 1.5 to 2.5 | |
| 0 |
| Vanadium (V), % | 0.15 to 0.3 | |
| 0.2 to 0.3 |
| Zirconium (Zr), % | 0 to 0.010 | |
| 0 |