Hardened SAE-AISI M44 vs. Hardened SAE-AISI T2
Both hardened SAE-AISI M44 and hardened SAE-AISI T2 are iron alloys. Both are furnished in the hardened (H) condition. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is hardened SAE-AISI M44 and the bottom bar is hardened SAE-AISI T2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Rockwell C Hardness | 71 | |
| 66 |
| Shear Modulus, GPa | 78 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 2290 | |
| 2150 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Melting Completion (Liquidus), °C | 1590 | |
| 1820 |
| Melting Onset (Solidus), °C | 1540 | |
| 1760 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 410 |
| Thermal Conductivity, W/m-K | 14 | |
| 19 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 43 | |
| 46 |
| Density, g/cm3 | 8.4 | |
| 9.3 |
| Embodied Carbon, kg CO2/kg material | 9.9 | |
| 11 |
| Embodied Energy, MJ/kg | 150 | |
| 170 |
| Embodied Water, L/kg | 170 | |
| 98 |
Common Calculations
| PREN (Pitting Resistance) | 35 | |
| 36 |
| Stiffness to Weight: Axial, points | 13 | |
| 12 |
| Stiffness to Weight: Bending, points | 23 | |
| 21 |
| Strength to Weight: Axial, points | 75 | |
| 64 |
| Strength to Weight: Bending, points | 46 | |
| 40 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 4.9 |
| Thermal Shock Resistance, points | 70 | |
| 65 |
Alloy Composition
| Carbon (C), % | 1.1 to 1.2 | |
| 0.8 to 0.9 |
| Chromium (Cr), % | 4.0 to 4.8 | |
| 3.8 to 4.5 |
| Cobalt (Co), % | 11 to 12.3 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 65.3 to 70.6 | |
| 70.8 to 75.8 |
| Manganese (Mn), % | 0.2 to 0.4 | |
| 0.2 to 0.4 |
| Molybdenum (Mo), % | 6.0 to 7.0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.3 to 0.55 | |
| 0.2 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tungsten (W), % | 5.0 to 5.8 | |
| 17.5 to 19 |
| Vanadium (V), % | 1.9 to 2.2 | |
| 1.8 to 2.4 |