AMS 4911 Ti6Al4V Titanium Alloy Plate

AMS 4911 Ti6Al4V Titanium Alloy Plate

Aerospace-grade AMS 4911 Ti6Al4V titanium alloy plates, covering sheets, strips, and plates up to 4,000 inches (101.60 mm) thick are the specialty of LINHUI Titanium. For flight-critical applications, this specification satisfies SAE International requirements.

Stable forming performance is ensured by our controlled cold rolling, which keeps thickness tolerance within ±0.05mm. In accordance with AMS-STD-2154, every plate is subjected to 100% ultrasonic testing to remove subsurface flaws. Our material offers exceptional fracture toughness and fatigue resistance, with hydrogen content kept at 150 ppm and oxygen limited to a maximum of 0.20%.

We have more than 200 tons in stock for prompt delivery in three to seven days. Complete heat traceability is provided by EN 10204 3.1 certification. For problems with material selection and fabrication, our engineering staff provides technical advice.​​​​​​​

Key Features & Benefits

Aerospace-Grade Purity: Strict control of interstitial elements (O, N, H) prevents hydrogen embrittlement and alpha case formation, ensuring long-term structural integrity.

Superior Fatigue Performance: Double VAR (Vacuum Arc Remelting) processing eliminates hard alpha inclusions. This extends service life in cyclic loading environments by 30-50% versus commercial grades.

Superplastic Formability: At 900°C, the material exhibits exceptional SPF capability. Complex geometries can be formed without cracking, reducing assembly costs for fairings and nacelles.

Wide Thickness Range: Available from 0.020" to 4.000" thick. Single-source supply simplifies procurement for entire airframe sections.

Specification For AMS 4911 Ti6Al4V Titanium Alloy Plate:

Manufacturing Process

Step 1 – Melting: Double VAR process produces ingots with ultra-low inclusion counts. Vacuum induction melting (VIM) is optional for critical batches.

Step 2 – Hot Rolling: Multi-pass breakdown reduces ingots to slabs. Temperature control prevents beta grain growth.

Step 3 – Annealing: Mill annealing at 704-760°C for 2-8 hours (time varies by thickness) relieves residual stress and recrystallizes the alpha-beta microstructure.

Step 4 – Cold Rolling: Precision rolling achieves final gauge. Our equipment maintains ±0.05mm tolerance across 2000mm width.

Step 5 – Surface Treatment: Chemical milling or pickling removes alpha case. Passivation creates a stable oxide layer for corrosion resistance.

Quality Inspection

Ultrasonic Testing: 100% UT per AMS-STD-2154 Class A detects flaws >0.8mm. Real-time waveform analysis ensures zero internal defects.

Microstructure Verification: Metallographic examination at 500x confirms proper alpha-beta phase distribution. No continuous alpha networks are permitted at grain boundaries.

Mechanical Testing: Tensile and bend tests on every heat lot. Results are recorded in the Mill Test Certificate with heat number traceability.

Third-Party Inspection: SGS, BV, TÜV, and DNV audits available upon request. Independent validation ensures compliance with customer specifications.

Applications

· Airframe Components: Bulkheads, wing spars, landing gear components

· Engine Parts: Compressor blades, discs, casings (up to 400°C service)

· Space Structures: Satellite frames, rocket motor casings

· Medical Implants: Surgical instruments, prosthetic devices (Grade 23 ELI available)

· Marine Engineering: Submersible hulls, propeller shafts, heat exchangers

· Chemical Processing: Reactor vessels, piping systems for corrosive media

Export Markets

We have supplied AMS 4911 Ti6Al4V Titanium Alloy Plate to aerospace manufacturers and Tier-1 contractors in:

· North America: USA, Canada, Mexico

· Europe: Germany, UK, France, Italy

· Asia-Pacific: Japan, South Korea, Singapore

· Middle East: UAE, Saudi Arabia

Our logistics network ensures safe delivery with proper export documentation, including EUR.1, CO, and airworthiness release certificates.

Why Choose Us

Direct Mill Access: Distributor markups are eliminated by factory pricing. Compared to trading companies, you save 15–20%.

Quick Turnaround: Stock orders are shipped in three to seven days. For urgent AOG (Aircraft On Ground) circumstances, rush orders are supported.

Engineering Support: Our metallurgists offer advice on material selection, suggestions for heat treatment, and help with failure analysis.

Flexible MOQ: 100 kg is the starting point for trial orders. Small quantities are not penalized during the prototype stages.

Complete Traceability: Every plate comes with an EN 10204 3.1 certificate that contains the heat number, chemistry report, mechanical test data, and UT results.

Multilingual Service: Throughout the course of your project, effective communication is ensured by support in English, Chinese, Spanish, and Arabic.

Packaging & Shipping

Protection: After being wrapped in anti-corrosion paper, the plates are placed into foam-padded wooden containers. Handling damage is avoided using edge protectors.

Labeling: The heat number, specifications, weight, and measurements are shown on every package. Warehouse scanning is made possible by barcodes.

Transport: Air freight is accessible for urgent needs; sea freight is available for large orders. We work with specialized aerospace forwarders, FedEx, and DHL.

Documentation: Each cargo is accompanied by a commercial invoice, packing list, MTC, and third-party inspection certificates.

FAQ

Q: What distinguishes AMS 4911 from ASTM B265 Grade 5?

A: AMS 4911 enforces tighter defect limits, mandatory ultrasonic testing, and stricter chemistry controls. It is required for flight-critical aerospace parts where ASTM B265 lacks the fracture toughness verifications.

Q: Can this plate be heat treated to increase strength?

A: AMS 4911 is supplied annealed for optimum formability. While Ti6Al4V can be solution treated and aged (STA) to higher strength, that would fall under AMS 4904. The annealed condition prioritizes fatigue life.

Q: What is the recommended cutting method?

A: Waterjet cutting minimizes the Heat Affected Zone. If laser cutting is used, edges must be chemically milled to remove the re-cast layer and alpha case per AMS requirements.

Q: Is Alpha Case removal mandatory?

A: Yes. The oxygen-enriched brittle layer formed during high-temperature processing severely degrades fatigue performance. AMS 4911 requires removal via pickling or chemical milling.

Q: What is the max service temperature?

A: Stable up to 400°C (750°F). Prolonged exposure above 480°C (900°F) without protection causes surface embrittlement. For higher temperatures, near-alpha alloys like Ti-6242 are recommended.

Request a Quote

Need AMS 4911 Ti6Al4V Titanium Alloy Plate for your next project? Contact our technical sales team at linhui@lhtitanium.com with your specifications. We'll respond within 4 hours with pricing, lead time, and stock availability.