ASTM A203 Steel vs. ASTM A572 Steel
Both ASTM A203 steel and ASTM A572 steel are iron alloys.
For each property being compared, the top bar is ASTM A203 steel and the bottom bar is ASTM A572 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 180 | |
| 140 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 22 to 26 | |
| 18 to 25 |
| Fatigue Strength, MPa | 210 to 280 | |
| 240 to 340 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 330 to 370 | |
| 300 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 590 | |
| 470 to 620 |
| Tensile Strength: Yield (Proof), MPa | 290 to 390 | |
| 330 to 510 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 52 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 to 7.6 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 to 8.7 | |
| 8.2 to 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.2 to 4.0 | |
| 2.0 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 to 1.7 | |
| 1.6 |
| Embodied Energy, MJ/kg | 21 to 23 | |
| 22 |
| Embodied Water, L/kg | 50 to 52 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 100 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 to 410 | |
| 290 to 690 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 17 to 22 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 17 to 21 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 15 to 17 | |
| 14 to 18 |