Materials / Compare
Steel A992 vs. Titanium
Compare Steel A992 vs. Titanium strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 385MPasourcetypical: mean of 20,295 A992 flange mill-test coupons (1998 SSPC survey), as reported by AISC | 885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset |
| Ultimate tensile strength | 505MPasourcetypical: mean of 20,295 A992 flange mill-test coupons (1998 SSPC survey) | 940MPasourcetypical, plate, annealed |
| Elongation at break | not sourced | 16%sourcetypical, in 2 in., plate annealed |
| Young's modulus (stiffness) | 200GPasourcedesign value (AISC 360-16) | 107–122GPasourcetypical range, 20 °C |
| Density | 7,850kg/m³sourcenominal (constructional data) | 4,430kg/m³sourcenominal |
| Strength to weight | 49kN·m/kg | 200kN·m/kg4.07x higher |
| Stiffness to weight | 25.5MN·m/kg | 25.8MN·m/kg1% higher |
| Poisson's ratio | 0.3sourcedesign value (AISC 360-16 Commentary) | 0.342sourcemean of TIMET measurements |
| Shear modulus | 76.9GPa1.8x stiffer in shear | 42.7GPa |
| Bulk modulus | 167GPa | 121GPa |
| Speed of sound | 5,048m/s | 5,084m/s |
| Thermal | ||
| Thermal conductivity | 48W/m·Ksourcenominal at 20 °C | 6.6W/m·Ksourcetypical, 20 °C, mill annealed |
| Thermal expansion | 12µm/m·Ksourcenominal (constructional data, no temperature range stated) | 9µm/m·Ksourcetypical, mean 0-100 °C |
| 100 mm part over a 50 °C swing | 60µm growth | 45µm growth33% less |
| Specific heat | 460–480J/kg·Ksourcebase material: EN S275JR unalloyed structural steel (the EN counterpart of A36), typical, 50/100 °C | 580J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 13mm²/s5.06x faster | 2.57mm²/s |
| Thermal shock resistance | 5,390W/m45% more resistant | 3,730W/m |
| Melting point | not sourced | 1,630–1,650°Csourcemelting range |
| Max service temperature | not sourced | 400°Csourceupper recommended use temperature |
| Values for | ASTM A992 W-shapes; Fy/Fu specified minimums from AISC publications (AISC 360-16 Commentary; Modern Steel Construction); elastic constants AISC 360; physical constants from the bauforumstahl structural-steel EPD, which names A992 among covered product standards. | TIMETAL 6-4 (Ti-6Al-4V Grade 5) annealed plate typical (TIMET properties manual) + TIMET datasheet TMC-0150 physical properties |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Is Steel A992 stronger than Titanium?
Titanium is stronger: its yield strength is 885 MPa against 385 MPa for Steel A992 (2.3x).
Which is lighter, Steel A992 or Titanium?
Titanium is lighter: 4,430 kg/m³ against 7,850 kg/m³ for Steel A992.
Which is stiffer, Steel A992 or Titanium?
Steel A992 is stiffer: Young's modulus 200 GPa against 115 GPa for Titanium, so the same part in Steel A992 deflects less under the same load.
Which is lighter for the same job, Steel A992 or Titanium?
For the same stiffness or strength: Titanium is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Steel A992 | Titanium |
|---|---|---|
| Stiff rod or tie (tension) | 1% heavier | lighter |
| Stiff beam (bending) | 34% heavier | lighter |
| Stiff panel or plate | 47% heavier | lighter |
| Strong rod or tie | 4.07x heavier | lighter |
| Strong beam | 3.09x heavier | lighter |
| Strong panel or plate | 2.69x heavier | lighter |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, Steel A992 or Titanium?
Steel A992 conducts heat better: 48 W/m·K against 6.6 W/m·K for Titanium.
Which expands less with temperature?
Titanium expands less: 9 µm/m·K against 12 µm/m·K for Steel A992.