Annealed SAE-AISI A4 vs. Annealed Titanium 4-4-2
Annealed SAE-AISI A4 belongs to the iron alloys classification, while annealed titanium 4-4-2 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 annealed SAE-AISI A4 and the bottom bar is annealed titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 21 | |
| 10 |
| Fatigue Strength, MPa | 260 | |
| 590 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 73 | |
| 42 |
| Shear Strength, MPa | 450 | |
| 690 |
| Tensile Strength: Ultimate (UTS), MPa | 710 | |
| 1150 |
| Tensile Strength: Yield (Proof), MPa | 370 | |
| 1030 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 410 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1610 |
| Melting Onset (Solidus), °C | 1410 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 540 |
| Thermal Conductivity, W/m-K | 40 | |
| 6.7 |
| Thermal Expansion, µm/m-K | 12 | |
| 8.6 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 1.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 2.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.9 | |
| 39 |
| Density, g/cm3 | 7.8 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 30 |
| Embodied Energy, MJ/kg | 24 | |
| 480 |
| Embodied Water, L/kg | 59 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 4700 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 34 |
| Strength to Weight: Axial, points | 25 | |
| 68 |
| Strength to Weight: Bending, points | 23 | |
| 52 |
| Thermal Diffusivity, mm2/s | 11 | |
| 2.6 |
| Thermal Shock Resistance, points | 23 | |
| 86 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 1.0 to 1.1 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0.9 to 2.2 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 92 to 95.5 | |
| 0 to 0.2 |
| Manganese (Mn), % | 1.8 to 2.2 | |
| 0 |
| Molybdenum (Mo), % | 0.9 to 1.4 | |
| 3.0 to 5.0 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 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 |