Annealed SAE-AISI H12 vs. Annealed SAE-AISI H13
Both annealed SAE-AISI H12 and annealed SAE-AISI H13 are iron alloys. Both are furnished in the annealed condition. They have a very high 99% of their average alloy composition in common.
For each property being compared, the top bar is annealed SAE-AISI H12 and the bottom bar is annealed SAE-AISI H13.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 | |
| 21 |
| Fatigue Strength, MPa | 230 | |
| 230 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Rockwell B Hardness | 95 | |
| 95 |
| Shear Modulus, GPa | 75 | |
| 74 |
| Shear Strength, MPa | 440 | |
| 430 |
| Tensile Strength: Ultimate (UTS), MPa | 690 | |
| 690 |
| Tensile Strength: Yield (Proof), MPa | 330 | |
| 330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1460 |
| Melting Onset (Solidus), °C | 1440 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 36 | |
| 29 |
| Thermal Expansion, µm/m-K | 12 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.3 | |
| 8.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.5 | |
| 9.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 6.0 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.9 | |
| 4.3 |
| Embodied Energy, MJ/kg | 41 | |
| 64 |
| Embodied Water, L/kg | 76 | |
| 78 |
Common Calculations
| PREN (Pitting Resistance) | 12 | |
| 9.9 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 | |
| 280 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 24 | |
| 25 |
| Strength to Weight: Bending, points | 22 | |
| 22 |
| Thermal Diffusivity, mm2/s | 9.8 | |
| 7.8 |
| Thermal Shock Resistance, points | 22 | |
| 25 |
Alloy Composition
| Carbon (C), % | 0.3 to 0.4 | |
| 0.32 to 0.45 |
| Chromium (Cr), % | 4.8 to 5.5 | |
| 4.8 to 5.5 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 87.8 to 91.7 | |
| 88.8 to 92 |
| Manganese (Mn), % | 0.2 to 0.5 | |
| 0.2 to 0.5 |
| Molybdenum (Mo), % | 1.3 to 1.8 | |
| 1.1 to 1.8 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.8 to 1.2 | |
| 0.8 to 1.2 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tungsten (W), % | 1.0 to 1.7 | |
| 0 |
| Vanadium (V), % | 0 to 0.5 | |
| 0.8 to 1.2 |