AMS 4909 UNS R54520 Ti-5Al-2.5Sn Annealed Titanium Sheet

AMS 4909 Ti-5Al-2.5Sn (Grade 6 ELI) titanium sheet offers 120 ksi tensile strength, 480°C service temperature, and excellent weldability. ELI grade for cryogenic applications. Ideal for gas turbine casings, airframe structures, and rocket components. ZYTC Alloy is AS9120B and ISO 9001 certified.

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As a professional China titanium alloy supplier ZYTC Alloy, we supply fully AMS 4909 compliant annealed titanium sheets, strips and plates, with complete aerospace-grade certification and customized processing services for global high-standard projects.

AMS 4909 specification covers a titanium alloy in the form of sheet, strip, and plate up to 1.000 inch (25.40 mm), inclusive, Extra Low Interstitial, Annealed

Ti-5Al-2.5Sn (UNS R54520) is an alloy made up of 5% aluminum and 2.5% tin. It is a high-strength, corrosion-resistant alloy that is commonly used in the aerospace and defense industries. Grade 6 Ti-5Al-2.5Sn alloy has high service temperature of 480°C (896°F), medium strength, and excellent weldability and fabricability. This alloy has good oxidation resistance and microstructure stability; however it is not heat-treatable.

Core Standard & Grade Identification

AMS 4909 is the exclusive aerospace specification for extra-low interstitial, annealed Ti-5Al-2.5Sn titanium sheet, strip and plate with a maximum thickness of 25.4mm (1.000 inch). This strict aviation standard controls interstitial elements to minimize material brittleness and ensure ultra-high structural stability for extreme working conditions.

Unified Grade: UNS R54520 Common Name: Ti-5Al-2.5Sn / Grade 6 Titanium Alloy State: Extra Low Interstitial (ELI), Fully Annealed

Full Cross-Reference Specifications

ZYTC Alloy's Ti-5Al-2.5Sn products comply with a complete set of aerospace and military standards to meet multi-scenario engineering inspection requirements:

Sheet, Strip & Plate: AMS 4909, AMS 4910, AMS-T-9046 A-1/A-2 (EL1), MIL-T-9046J/H
Bars, Wire & Rings: AMS 4926, AMS 6900, AMS-T-9047, MIL-T-9047G
Forgings & Ring Parts: AMS 4966, AMS 4924 (EL1 grade)
Universal Industrial Standard: ASTM B367 Grade 6

Chemical Composition
Weight %	Ti	C	Fe	N	Al	O	Sn	H	Other
Titanium Ti5Al2.5Sn	bal	0.10	0.05	0.05	4.0/6.0	0.20	2.0-3.0	0.020	0.4 total max

Typical Mechanical Properties

Material	Tensile Strength min		Yield Strength				Elongation (%)
	ksi	Mpa	Min		Max
			ksi	Mpa	Ksi	Mpa
Titanium Ti-5Al-2.5Sn Annealed Sheet	120	830	115	795	-	-	10

Applications

Aerospace & Aviation Engines

Ideal for gas turbine engine casings, engine rings, high-temperature protective structures and internal engine components, maintaining stable structural strength under long-term high-temperature cyclic load.

Aircraft Fuselage & Structural Frame

Widely used in aircraft airframe structures, fuselage frames and aviation precision structural parts, reducing overall weight while ensuring structural safety and fatigue resistance.

Defense & Industrial Systems

Applied in military precision equipment, high-temperature resistant structural parts and chemical processing equipment, adapting to harsh industrial and military working environments.

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