ASTM Grade HP Steel vs. Chromium 33
Both ASTM grade HP steel and chromium 33 are metals with high concentrations of iron and nickel. This makes them relatively similar, despite formally belonging to different alloy families. They have a moderately high 91% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is chromium 33.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 5.1 | |
| 45 |
| Poisson's Ratio | 0.28 | |
| 0.27 |
| Shear Modulus, GPa | 78 | |
| 81 |
| Tensile Strength: Ultimate (UTS), MPa | 490 | |
| 850 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 430 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 320 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Expansion, µm/m-K | 16 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 34 | |
| 36 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 5.8 | |
| 6.0 |
| Embodied Energy, MJ/kg | 82 | |
| 84 |
| Embodied Water, L/kg | 220 | |
| 250 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 21 | |
| 320 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 | |
| 450 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 17 | |
| 30 |
| Strength to Weight: Bending, points | 17 | |
| 25 |
| Thermal Shock Resistance, points | 11 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0.35 to 0.75 | |
| 0 to 0.015 |
| Chromium (Cr), % | 24 to 28 | |
| 31 to 35 |
| Copper (Cu), % | 0 | |
| 0.3 to 1.2 |
| Iron (Fe), % | 29.2 to 42.7 | |
| 25.7 to 37.9 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0.5 to 2.0 |
| Nickel (Ni), % | 33 to 37 | |
| 30 to 33 |
| Nitrogen (N), % | 0 | |
| 0.35 to 0.6 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 2.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.010 |