ASTM A203 Steel vs. EN 1.1221 Steel
Both ASTM A203 steel and EN 1.1221 steel are iron alloys.
For each property being compared, the top bar is ASTM A203 steel and the bottom bar is EN 1.1221 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 180 | |
| 210 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 22 to 26 | |
| 10 to 21 |
| Fatigue Strength, MPa | 210 to 280 | |
| 240 to 340 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 330 to 370 | |
| 450 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 590 | |
| 730 to 870 |
| Tensile Strength: Yield (Proof), MPa | 290 to 390 | |
| 390 to 550 |
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 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 52 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
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 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.2 to 4.0 | |
| 2.1 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 to 1.7 | |
| 1.5 |
| Embodied Energy, MJ/kg | 21 to 23 | |
| 19 |
| Embodied Water, L/kg | 50 to 52 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 67 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 to 410 | |
| 410 to 800 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 26 to 31 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 23 to 26 |
| Thermal Diffusivity, mm2/s | 14 | |
| 13 |
| Thermal Shock Resistance, points | 15 to 17 | |
| 23 to 28 |