Hardened SAE-AISI M52 vs. Hardened SAE-AISI P5
Both hardened SAE-AISI M52 and hardened SAE-AISI P5 are iron alloys. Both are furnished in the hardened (H) condition. They have 90% of their average alloy composition in common.
For each property being compared, the top bar is hardened SAE-AISI M52 and the bottom bar is hardened SAE-AISI P5.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Rockwell C Hardness | 71 | |
| 61 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 2280 | |
| 1980 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| Melting Completion (Liquidus), °C | 1510 | |
| 1460 |
| Melting Onset (Solidus), °C | 1470 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Conductivity, W/m-K | 31 | |
| 45 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.9 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 2.8 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 7.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 110 | |
| 20 |
| Embodied Water, L/kg | 89 | |
| 56 |
Common Calculations
| PREN (Pitting Resistance) | 20 | |
| 2.3 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 80 | |
| 70 |
| Strength to Weight: Bending, points | 49 | |
| 45 |
| Thermal Diffusivity, mm2/s | 8.4 | |
| 12 |
| Thermal Shock Resistance, points | 67 | |
| 65 |
Alloy Composition
| Carbon (C), % | 0.85 to 1.0 | |
| 0 to 0.1 |
| Chromium (Cr), % | 3.5 to 4.3 | |
| 2.0 to 2.5 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 84.4 to 88.9 | |
| 95.7 to 97.8 |
| Manganese (Mn), % | 0.15 to 0.45 | |
| 0.2 to 0.6 |
| Molybdenum (Mo), % | 4.0 to 4.9 | |
| 0 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 to 0.35 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.2 to 0.6 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tungsten (W), % | 0.75 to 1.5 | |
| 0 |
| Vanadium (V), % | 1.7 to 2.3 | |
| 0 |