ASTM A285 Carbon Steel vs. SAE-AISI H21 Steel
Both ASTM A285 carbon steel and SAE-AISI H21 steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is ASTM A285 carbon steel and the bottom bar is SAE-AISI H21 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 450 | |
| 720 to 1790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1630 |
| Melting Onset (Solidus), °C | 1420 to 1430 | |
| 1580 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 440 |
| Thermal Conductivity, W/m-K | 53 | |
| 27 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 23 |
| Density, g/cm3 | 7.9 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 4.5 |
| Embodied Energy, MJ/kg | 18 | |
| 68 |
| Embodied Water, L/kg | 46 | |
| 72 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 13 to 16 | |
| 23 to 58 |
| Strength to Weight: Bending, points | 15 to 17 | |
| 21 to 38 |
| Thermal Diffusivity, mm2/s | 14 | |
| 7.1 |
| Thermal Shock Resistance, points | 12 to 14 | |
| 24 to 59 |