ASTM A231 Spring Steel vs. EN 1.0033 Steel
Both ASTM A231 spring steel and EN 1.0033 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM A231 spring steel and the bottom bar is EN 1.0033 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 540 | |
| 86 to 96 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 | |
| 17 to 32 |
| Fatigue Strength, MPa | 1000 | |
| 120 to 140 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 1080 | |
| 200 |
| Tensile Strength: Ultimate (UTS), MPa | 1790 | |
| 300 to 330 |
| Tensile Strength: Yield (Proof), MPa | 1570 | |
| 150 to 200 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1410 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 52 | |
| 53 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 1.4 |
| Embodied Energy, MJ/kg | 28 | |
| 18 |
| Embodied Water, L/kg | 51 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 48 to 83 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 64 | |
| 10 to 12 |
| Strength to Weight: Bending, points | 42 | |
| 13 to 14 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 53 | |
| 9.4 to 10 |
Alloy Composition
| Carbon (C), % | 0.48 to 0.53 | |
| 0 to 0.11 |
| Chromium (Cr), % | 0.8 to 1.1 | |
| 0 |
| Iron (Fe), % | 96.7 to 97.7 | |
| 98.8 to 100 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0 to 0.7 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.045 |
| Vanadium (V), % | 0.15 to 0.3 | |
| 0 |