Boze Titanium Manufacturing Center | Alpha Titanium Alloy

Grade 6 – Ti-5Al-2.5Sn Titanium Alloy Grade 6

Ti-5Al-2.5Sn (Grade 6, UNS R54520) — a near-alpha titanium alloy stabilized with aluminum and tin offering excellent elevated-temperature strength, oxidation resistance, and creep performance up to 480°C (900°F) with superior weldability.

Read more
Entity Definition

What is Grade 6 Titanium (Ti-5Al-2.5Sn)?

Grade 6 (Ti-5Al-2.5Sn) is a near-alpha titanium alloy stabilized with 5% aluminum and 2.5% tin. It offers an excellent combination of medium strength, oxidation resistance, and creep strength at elevated temperatures up to 480°C (900°F). Its alpha-phase microstructure provides superior weldability and thermal stability compared to alpha-beta alloys.

Classification

Near-Alpha Titanium Alloy
UNS Number

UNS R54520

Common Names

Ti-5Al-2.5Sn Grade 6 UNS R54520 AMS 4926

Key Characteristics

  • Excellent elevated-temperature strength and creep resistance up to 480°C
  • Good oxidation resistance for continuous high-temperature service
  • Superior weldability compared to alpha-beta alloys
  • Medium strength with good ductility and formability
  • Excellent thermal stability — no significant embrittlement after prolonged thermal exposure
  • Good corrosion resistance in oxidizing environments
Applicable Standards

Applicable Standards

Grade 6 titanium conforms to the following international material standards:

ASTM B265 — Sheet, Strip, and Plate
ASTM B348 — Bars and Billets
ASTM B381 — Forgings
AMS 4926 — Bars, Wire, and Forgings
AMS 4910 — Sheet, Strip, and Plate
DIN 17851 — Ti-5Al-2.5Sn
Material Properties

Mechanical & Physical Properties

Typical room-temperature and elevated-temperature properties for Grade 6 Ti-5Al-2.5Sn (annealed condition):

Tensile Strength (min, room temp) 790 MPa (115 ksi)
Yield Strength 0.2% Offset (min) 760 MPa (110 ksi)
Elongation (min) 10%
Reduction of Area 25%
Hardness (HRC) ≤ 36 HRC
Density 4.48 g/cm³ (0.162 lb/in³)
Elastic Modulus 110 GPa (15.9 × 10⁶ psi)
Melting Point 1,600–1,700°C (2,912–3,092°F)
Max Continuous Service Temperature 480°C (900°F)
Creep Resistance Good up to 480°C / 170 MPa
Thermal Conductivity 7.5 W/(m·K)
Processing Methods

Available Processing Methods

Grade 6 Ti-5Al-2.5Sn can be processed using the following manufacturing techniques:

CNC machining — Good; machines better than Ti-6Al-4V due to alpha-phase stability
TIG welding — Excellent; lower susceptibility to weld cracking than alpha-beta alloys
Laser welding — Good quality with standard titanium welding practices
Forging — At 950–1,050°C (1,742–1,922°F) with controlled cooling
Hot forming — At 650–760°C (1,200–1,400°F)
Cold forming — Limited; requires annealing between operations
Annealing — At 720–845°C (1,325–1,550°F) with air cooling
Chemical etching — Standard HF/HNO₃ solutions
Downstream Products

Typical Products & Components

Grade 6 Ti-5Al-2.5Sn is commonly fabricated into the following downstream products:

Aircraft engine components — compressor cases, vanes, ducts
Airframe structures near engine nacelles and exhaust areas
High-temperature fasteners for hot-section assembly
Missile and rocket components experiencing aerodynamic heating
Chemical processing equipment for high-temperature service
Automotive exhaust system components
Heat-affected zone components in welded assemblies
Industries

Primary Industries

Grade 6 Ti-5Al-2.5Sn serves as a material of choice across these industries:

Aerospace — Engine components, airframe hot-sections, missile structures
Defense — High-temperature missile and propulsion systems
Chemical processing — High-temperature reactors and heat exchangers
Automotive — Performance exhaust systems and heat shields
Power generation — Gas turbine hot-gas path components
Marine — High-temperature exhaust system components
Alternative Materials

Alternative Materials

Depending on application requirements, Grade 6 may be substituted by:

Grade 5 (Ti-6Al-4V) — Higher room-temperature strength but lower elevated-temperature capability
Ti-6Al-2Sn-4Zr-2Mo (Grade 6242) — Superior high-temperature performance for advanced engines
INCONEL 718 — Higher temperature capability at significantly higher weight and cost
Ti-8Al-1Mo-1V — Higher-temperature alpha alloy alternative
Stainless Steel 321 — Lower-cost alternative for moderate temperature service
Why Boze Titanium Manufacturing Center

Why Choose Us for This Grade

Boze Titanium Manufacturing Center manufactures precision Grade 6 components for aerospace and high-temperature applications with AS9100D quality systems and NDT per NADCAP-compliant procedures.

Frequently Asked Questions

Common questions from engineers about this titanium grade and our precision machining capabilities.

What is Grade 6 titanium (Ti-5Al-2.5Sn)?

Grade 6 is a near-alpha titanium alloy offering excellent elevated-temperature strength, oxidation resistance, and creep performance up to 480°C.

What aerospace applications use Grade 6?

Grade 6 is used in gas turbine engine components, airframe structures near engine nacelles, high-temperature fasteners, and rocket components.

Can you machine and weld Grade 6 titanium?

Yes. We machine Grade 6 on multi-axis CNC centers and perform TIG welding. Post-weld heat treatment is typically required to restore properties.

Related Components

1 precision CNC machined components manufactured from Grade 6 - Ti-5Al-2.5Sn Titanium Alloy

Titanium Cryogenic Tank Clamp Band

Propellant tank clamp band (Ti-5Al-2.5Sn ELI)

5-axis CNC roughing for cryogenic hardware geometryHeat treatment (STA) at 200W fiber laserWire EDM contour profiling at 200W fiber laserCMM per AS9102 at 200W fiber laser

Need Grade 6 Components?

Our engineering team delivers precision-machined components in Grade 6. Submit your RFQ for a competitive quote within 24–48 hours.

Request a Quote All Materials Guide
Audience-first guidance

Guidance for the professionals who specify titanium

Role-specific answers and resources for engineers and buyers in this industry.

Design engineering Quality & compliance Procurement

Common questions from this audience

How do I choose the right titanium grade?

Selection depends on strength, corrosion resistance, formability and application — CP grades for corrosion, alpha-beta alloys like Ti-6Al-4V for strength, and ELI grades for medical.

Which titanium grade is best for medical implants?

Ti-6Al-4V ELI (Grade 23) per ASTM F136 is the most common implantable grade for its strength and biocompatibility.

What certifications accompany titanium material?

Mill test certificates (ASTM, AMS), EN 10204 3.1 reports and full lot traceability are provided with every shipment.

Related resources

Request a quote
About Boze Titanium Manufacturing Center

One Metal. One Focus. Infinite Precision.

Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.

Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.

AS9100D ISO 13485 ISO 9001 500+ Clients 15+ Years OEM/ODM
Learn About Us Request a Quote
Explore More: Material Specifications Industry Applications All Services Capabilities