EN 1.8550 Steel vs. EN 1.7336 Steel
Both EN 1.8550 steel and EN 1.7336 steel are iron alloys. They have a very high 98% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.8550 steel and the bottom bar is EN 1.7336 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 300 | |
| 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 | |
| 22 |
| Fatigue Strength, MPa | 470 | |
| 240 to 310 |
| Impact Strength: V-Notched Charpy, J | 34 | |
| 39 to 46 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 600 | |
| 370 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 | |
| 590 |
| Tensile Strength: Yield (Proof), MPa | 760 | |
| 340 to 440 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 430 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1410 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 40 | |
| 40 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.4 | |
| 3.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 1.6 |
| Embodied Energy, MJ/kg | 23 | |
| 21 |
| Embodied Water, L/kg | 67 | |
| 53 |
Common Calculations
| PREN (Pitting Resistance) | 2.3 | |
| 3.2 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1550 | |
| 310 to 510 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 36 | |
| 21 |
| Strength to Weight: Bending, points | 29 | |
| 20 |
| Thermal Diffusivity, mm2/s | 11 | |
| 11 |
| Thermal Shock Resistance, points | 29 | |
| 17 |
Alloy Composition
| Aluminum (Al), % | 0.8 to 1.2 | |
| 0 |
| Carbon (C), % | 0.3 to 0.37 | |
| 0 to 0.17 |
| Chromium (Cr), % | 1.5 to 1.8 | |
| 1.0 to 1.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 94.4 to 96.3 | |
| 95.6 to 97.7 |
| Manganese (Mn), % | 0.4 to 0.7 | |
| 0.4 to 0.65 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0.45 to 0.65 |
| Nickel (Ni), % | 0.85 to 1.2 | |
| 0 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0 to 0.012 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.4 | |
| 0.5 to 0.8 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.0050 |