EN 1.6554 Steel vs. Grade 7 Titanium
EN 1.6554 steel belongs to the iron alloys classification, while grade 7 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is EN 1.6554 steel and the bottom bar is grade 7 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 to 280 | |
| 150 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 17 to 21 | |
| 24 |
| Fatigue Strength, MPa | 380 to 520 | |
| 250 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 73 | |
| 38 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 930 | |
| 420 |
| Tensile Strength: Yield (Proof), MPa | 550 to 790 | |
| 340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 320 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1660 |
| Melting Onset (Solidus), °C | 1420 | |
| 1610 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 540 |
| Thermal Conductivity, W/m-K | 40 | |
| 22 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.2 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 3.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 7.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 47 |
| Embodied Energy, MJ/kg | 22 | |
| 800 |
| Embodied Water, L/kg | 53 | |
| 470 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 150 | |
| 95 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 810 to 1650 | |
| 560 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 35 |
| Strength to Weight: Axial, points | 27 to 33 | |
| 26 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 28 |
| Thermal Diffusivity, mm2/s | 11 | |
| 8.9 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 31 |
Alloy Composition
| Carbon (C), % | 0.23 to 0.28 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0.7 to 0.9 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 94.6 to 97.3 | |
| 0 to 0.3 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 0 |
| Nickel (Ni), % | 1.0 to 2.0 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.25 |
| Palladium (Pd), % | 0 | |
| 0.12 to 0.25 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 98.7 to 99.88 |
| Vanadium (V), % | 0 to 0.030 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.4 |