EN 1.5113 +U+C Steel vs. Cold Finished SAE-AISI 4340
Both EN 1.5113 +U+C steel and cold finished SAE-AISI 4340 are iron alloys. Both are furnished in the cold worked (strain hardened) condition. They have a very high 97% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.5113 +U+C steel and the bottom bar is cold finished SAE-AISI 4340.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 | |
| 12 |
| Fatigue Strength, MPa | 470 | |
| 370 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Shear Strength, MPa | 540 | |
| 430 |
| Tensile Strength: Ultimate (UTS), MPa | 900 | |
| 710 |
| Tensile Strength: Yield (Proof), MPa | 770 | |
| 600 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 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 | 52 | |
| 44 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.0 | |
| 3.5 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.7 |
| Embodied Energy, MJ/kg | 19 | |
| 22 |
| Embodied Water, L/kg | 48 | |
| 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 96 | |
| 79 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1570 | |
| 960 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 32 | |
| 25 |
| Strength to Weight: Bending, points | 27 | |
| 23 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 26 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 0 | |
| 0.7 to 0.9 |
| Iron (Fe), % | 97 to 97.5 | |
| 95.1 to 96.3 |
| Manganese (Mn), % | 1.6 to 1.8 | |
| 0.6 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 0 | |
| 1.7 to 2.0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.9 to 1.1 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.040 |