ASTM Grade HP Steel vs. SAE-AISI 50B60 Steel
Both ASTM grade HP steel and SAE-AISI 50B60 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 ASTM grade HP steel and the bottom bar is SAE-AISI 50B60 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 | |
| 180 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 5.1 | |
| 12 to 20 |
| Fatigue Strength, MPa | 130 | |
| 240 to 330 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 490 | |
| 610 to 630 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 350 to 530 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 410 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1450 |
| Melting Onset (Solidus), °C | 1330 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 12 | |
| 45 |
| Thermal Expansion, µm/m-K | 16 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 34 | |
| 2.0 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.8 | |
| 1.4 |
| Embodied Energy, MJ/kg | 82 | |
| 19 |
| Embodied Water, L/kg | 220 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 21 | |
| 71 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 | |
| 330 to 750 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 17 | |
| 22 to 23 |
| Strength to Weight: Bending, points | 17 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 12 |
| Thermal Shock Resistance, points | 11 | |
| 20 |
Alloy Composition
| Boron (B), % | 0 | |
| 0.00050 to 0.0030 |
| Carbon (C), % | 0.35 to 0.75 | |
| 0.56 to 0.64 |
| Chromium (Cr), % | 24 to 28 | |
| 0.4 to 0.6 |
| Iron (Fe), % | 29.2 to 42.7 | |
| 97.3 to 98.1 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 33 to 37 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 2.5 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.040 |