SAE-AISI 1345 Steel vs. ASTM Grade HP Steel
Both SAE-AISI 1345 steel and ASTM grade HP steel are iron alloys. They have a modest 38% 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 (5, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1345 steel and the bottom bar is ASTM grade HP steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 210 | |
| 140 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 23 | |
| 5.1 |
| Fatigue Strength, MPa | 230 to 390 | |
| 130 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 730 | |
| 490 |
| Tensile Strength: Yield (Proof), MPa | 330 to 620 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1370 |
| Melting Onset (Solidus), °C | 1410 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 51 | |
| 12 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 34 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 5.8 |
| Embodied Energy, MJ/kg | 19 | |
| 82 |
| Embodied Water, L/kg | 48 | |
| 220 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 78 to 120 | |
| 21 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 to 1040 | |
| 170 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 26 | |
| 17 |
| Strength to Weight: Bending, points | 20 to 23 | |
| 17 |
| Thermal Diffusivity, mm2/s | 14 | |
| 3.2 |
| Thermal Shock Resistance, points | 19 to 23 | |
| 11 |
Alloy Composition
| Carbon (C), % | 0.43 to 0.48 | |
| 0.35 to 0.75 |
| Chromium (Cr), % | 0 | |
| 24 to 28 |
| Iron (Fe), % | 97.2 to 97.8 | |
| 29.2 to 42.7 |
| Manganese (Mn), % | 1.6 to 1.9 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 33 to 37 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 2.5 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.040 |