EN 1.4542 +AT Steel vs. EN 1.4568 +AT Steel
Both EN 1.4542 +AT steel and EN 1.4568 +AT steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 95% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4542 +AT steel and the bottom bar is EN 1.4568 +AT steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 320 | |
| 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 5.7 | |
| 21 |
| Fatigue Strength, MPa | 520 | |
| 220 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Shear Strength, MPa | 640 | |
| 520 |
| Tensile Strength: Ultimate (UTS), MPa | 1090 | |
| 830 |
| Tensile Strength: Yield (Proof), MPa | 1080 | |
| 330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 440 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 860 | |
| 890 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1420 |
| Melting Onset (Solidus), °C | 1380 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 16 | |
| 16 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.8 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 13 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.8 |
| Embodied Energy, MJ/kg | 39 | |
| 40 |
| Embodied Water, L/kg | 130 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 17 | |
| 17 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 62 | |
| 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3030 | |
| 290 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 39 | |
| 30 |
| Strength to Weight: Bending, points | 30 | |
| 25 |
| Thermal Diffusivity, mm2/s | 4.3 | |
| 4.3 |
| Thermal Shock Resistance, points | 36 | |
| 23 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.7 to 1.5 |
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.090 |
| Chromium (Cr), % | 15 to 17 | |
| 16 to 18 |
| Copper (Cu), % | 3.0 to 5.0 | |
| 0 |
| Iron (Fe), % | 69.6 to 79 | |
| 70.9 to 76.8 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.6 | |
| 0 |
| Nickel (Ni), % | 3.0 to 5.0 | |
| 6.5 to 7.8 |
| Niobium (Nb), % | 0 to 0.45 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.7 | |
| 0 to 0.7 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |