EN 1.4378 Stainless Steel vs. Titanium 4-4-2
EN 1.4378 stainless steel belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Elongation at Break, % | 14 to 34 | |
| 10 |
| Fatigue Strength, MPa | 340 to 550 | |
| 590 to 620 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Shear Modulus, GPa | 77 | |
| 42 |
| Shear Strength, MPa | 510 to 680 | |
| 690 to 750 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 1030 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 310 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1610 |
| Melting Onset (Solidus), °C | 1350 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 540 |
| Thermal Expansion, µm/m-K | 17 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 39 |
| Density, g/cm3 | 7.6 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 30 |
| Embodied Energy, MJ/kg | 39 | |
| 480 |
| Embodied Water, L/kg | 150 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 2370 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 34 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 52 to 55 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 86 to 93 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.080 |
| Chromium (Cr), % | 17 to 19 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 61.2 to 69 | |
| 0 to 0.2 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 3.0 to 5.0 |
| Nickel (Ni), % | 2.3 to 3.7 | |
| 0 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.3 to 0.7 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 | |
| 85.8 to 92.2 |
| Residuals, % | 0 | |
| 0 to 0.4 |