ASTM Grade HN Steel vs. ASTM A202 Steel
Both ASTM grade HN steel and ASTM A202 steel are iron alloys. There are 24 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 HN steel and the bottom bar is ASTM A202 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 | |
| 180 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 9.0 | |
| 17 to 18 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 500 | |
| 590 to 670 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 1080 | |
| 410 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1450 |
| Melting Onset (Solidus), °C | 1350 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 13 | |
| 52 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 2.1 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 66 | |
| 19 |
| Embodied Water, L/kg | 180 | |
| 49 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 17 | |
| 21 to 24 |
| Strength to Weight: Bending, points | 18 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 14 |
| Thermal Shock Resistance, points | 11 | |
| 17 to 20 |