Cold Rolled EN 1.4621 vs. EN 1.4104 +C550 Steel
Both cold rolled EN 1.4621 and EN 1.4104 +C550 steel are iron alloys. Both are furnished in the cold worked (strain hardened) condition. They have a moderately high 95% of their average alloy composition in common.
For each property being compared, the top bar is cold rolled EN 1.4621 and the bottom bar is EN 1.4104 +C550 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 25 | |
| 17 |
| Fatigue Strength, MPa | 190 | |
| 300 |
| Poisson's Ratio | 0.27 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 77 |
| Shear Strength, MPa | 320 | |
| 400 |
| Tensile Strength: Ultimate (UTS), MPa | 500 | |
| 650 |
| Tensile Strength: Yield (Proof), MPa | 270 | |
| 490 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 510 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 970 | |
| 860 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1390 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 21 | |
| 25 |
| Thermal Expansion, µm/m-K | 11 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.6 | |
| 2.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.1 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 14 | |
| 8.5 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.2 |
| Embodied Energy, MJ/kg | 41 | |
| 30 |
| Embodied Water, L/kg | 140 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 21 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 | |
| 620 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 18 | |
| 23 |
| Strength to Weight: Bending, points | 18 | |
| 22 |
| Thermal Diffusivity, mm2/s | 5.7 | |
| 6.7 |
| Thermal Shock Resistance, points | 17 | |
| 23 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0.1 to 0.17 |
| Chromium (Cr), % | 20 to 21.5 | |
| 15.5 to 17.5 |
| Copper (Cu), % | 0.1 to 1.0 | |
| 0 |
| Iron (Fe), % | 74.4 to 79.7 | |
| 78.8 to 84.1 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.6 |
| Niobium (Nb), % | 0.2 to 1.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0.15 to 0.35 |