ASTM Grade HP Steel vs. SAE-AISI 1146 Steel
Both ASTM grade HP steel and SAE-AISI 1146 steel are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is SAE-AISI 1146 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 | |
| 190 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 5.1 | |
| 13 to 17 |
| Fatigue Strength, MPa | 130 | |
| 240 to 400 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 490 | |
| 670 to 730 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 360 to 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 400 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1460 |
| Melting Onset (Solidus), °C | 1330 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 12 | |
| 51 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 34 | |
| 1.8 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.8 | |
| 1.4 |
| Embodied Energy, MJ/kg | 82 | |
| 18 |
| Embodied Water, L/kg | 220 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 21 | |
| 93 to 97 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 | |
| 340 to 1050 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 17 | |
| 24 to 26 |
| Strength to Weight: Bending, points | 17 | |
| 22 to 23 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 14 |
| Thermal Shock Resistance, points | 11 | |
| 20 to 22 |
Alloy Composition
| Carbon (C), % | 0.35 to 0.75 | |
| 0.42 to 0.49 |
| Chromium (Cr), % | 24 to 28 | |
| 0 |
| Iron (Fe), % | 29.2 to 42.7 | |
| 98.3 to 98.8 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.7 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 33 to 37 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 2.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0.080 to 0.13 |