Reviewed · 2026-08-13
Titanium Alloys
Titanium materials combine low density, corrosion resistance and useful strength, but industrial selection must preserve alloy class, interstitial chemistry, product form, heat treatment, microstructure and inspection route.
Classification basis
Phase constitution, intentional alloying, interstitial content, product route and heat-treatment response
Four families separate commercially pure corrosion-led grades from alpha/near-alpha temperature service, alpha-beta general engineering alloys and metastable-beta high-strength systems.
A familiar grade name never replaces the governing product specification and certified documentation.01
Explore subcategories
Commercially Pure Titanium
Includes unalloyed titanium grades and palladium-modified variants only when explicitly specified; excludes Ti-6Al-4V and other intentionally strengthened alloy systems.
→TitaniumAlpha and Near-Alpha Titanium
Covers alpha-dominant wrought alloys for elevated temperature; excludes CP titanium selected primarily for corrosion and metastable-beta alloys selected for heat-treatable strength.
→TitaniumAlpha-Beta Titanium
Includes duplex-phase titanium systems; Grade 5 and Grade 23 are related but not interchangeable without product specification, interstitial and property review.
→TitaniumBeta Titanium
Covers beta-rich heat-treatable alloys; excludes alpha-beta alloys when their mixed-phase condition is the governing design basis.
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Representative grades and systems
| Grade / system | Use as a selection entry point |
|---|---|
| Grade 2 | Start with service chemistry, stress and temperature. |
| Ti-5Al-2.5Sn | Match phase family and heat treatment to section and fatigue duty. |
| Ti-6Al-4V | Specify interstitials, surface, inspection and traceability by product form. |
| Ti-10V-2Fe-3Al | Start with service chemistry, stress and temperature. |
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Property framework
Strength-to-density ratio
Corrosion and oxidation behavior
Fatigue, toughness and temperature capability
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Common product forms
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Applications
- Chemical and marine equipment
- Aerospace structures and engines
- Medical, energy and industrial hardware
- Start with service chemistry, stress and temperature.
- Match phase family and heat treatment to section and fatigue duty.
- Specify interstitials, surface, inspection and traceability by product form.
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Standards and designation systems
ASTM B265 flat products
ASTM B348 bars and billets
ASTM B367 castings and form-specific B10 specifications
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Procurement checklist
- State grade/UNS and exact product specification.
- Define condition, microstructure and interstitial limits.
- Specify surface, NDT, mechanical tests and full heat traceability.
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