AMS 4907 Ti6Al4V ELI Plate

AMS 4907 Ti6Al4V ELI Plate - Aerospace Grade Titanium Alloy

LINHUI TITANIUM supplies factory-direct AMS 4907 Ti6Al4V ELI Plate with oxygen content controlled ≤0.13% and iron ≤0.25%, delivering superior fracture toughness (K1c) exceeding standard Ti-6Al-4V. Our annealed plates meet tensile strength ≥896 MPa and yield strength ≥827 MPa, ensuring damage tolerance for fracture-critical aerospace structures.

With thickness tolerance controlled within ±0.05mm through precision cold rolling, we provide full EN 10204 3.1 traceability and AMS 2631 Class A ultrasonic inspection. Stock delivery available in 3–7 days for over 200+ tons inventory, backed by 20+ years manufacturing experience serving global aerospace contractors.

Key Features & Benefits

Ultra-Low Interstitial Purity: Oxygen restricted to 0.13% maximum enhances ductility and crack resistance compared to standard grades. You gain superior damage tolerance in safety-critical applications.

Cryogenic Temperature Stability: Maintains mechanical integrity down to -253°C without brittle transition. Your liquid propellant tanks and space components remain reliable under extreme thermal stress.

Enhanced Fracture Toughness: ELI chemistry delivers K1c values 15-20% higher than AMS 4911. This allows leak-before-burst design criteria for airframe bulkheads.

Controlled Rolling Process: Our proprietary cold rolling ensures uniform grain structure and dimensional accuracy. You receive consistent forming performance across production batches.

Core properties of the material

Ultra-low interstitial element (ELI) standard

Oxygen (O) ≤ 0.13%, iron (Fe) ≤ 0.25%, carbon (C) ≤ 0.08%, significantly improving fatigue resistance and fracture toughness.

Complies with AMS 4907 and ASTM F136 standards, suitable for scenes with extremely high requirements for material purity.

Excellent mechanical properties

Tensile strength: ≥ 860 MPa

Yield strength: ≥ 795 MPa

Elongation: ≥ 10%

Combining high strength and excellent plasticity, suitable for complex AMS 4907 Ti6Al4V ELI Plate processing and forming.

Biocompatibility certification

ISO 5832-3 and FDA certified, safe for use in human implants (such as joints, bone plates).

Upgrade advantages compared with ordinary Ti6Al4V

Manufacturing Process

Selection of Raw Materials: Virgin titanium sponge from accredited mills is vacuum arc remelted (VAR) three times. This guarantees homogenous chemistry and gets rid of macro-segregation.

Hot Rolling: Alpha-case formation is prevented by heating ingots to 950°C in furnaces with an inert environment. Multi-pass rolling refines the grain structure to ASTM grain size 8–10 while decreasing thickness.

Annealing Treatment: After two hours of stress-relieving annealing at 730°C, the plates are cooled in a furnace. This procedure maintains the necessary strength while optimizing ductility.

Surface Finishing: Oxide scale is eliminated by acid pickling. For parts that need smooth surfaces, optional mechanical polishing produces Ra ≤0.8μm.

Quality Inspection

100% Ultrasonic Testing: Every plate undergoes UT per AMS 2631 Class A. Our automated systems detect flaws >0.8mm equivalent flat-bottom hole, ensuring zero-defect delivery.

Interstitial Analysis: Leco gas analyzers verify oxygen and hydrogen content on each heat lot. Certificates include actual measured values, not just specification compliance statements.

Microstructure Verification: Metallographic examination confirms alpha-beta phase distribution and absence of alpha-case. Grain size documentation provided with material test certificates.

Mechanical Testing: Tensile and elongation tests performed in both rolling directions. You receive test reports showing actual yield, UTS, and elongation percentages for your specific material batch.

Applications Of AMS 4907 Ti6Al4V ELI Plate

Aerospace Structural Elements: High fracture toughness is utilized by firewall plates, wing spars, and fuselage bulkheads. Your aircraft structures have demonstrated material performance and satisfy fail-safe design requirements.

Cryogenic Storage Systems: Rockets' liquid oxygen and hydrogen tanks stay intact at -253°C. During launch sequences, the AMS 4907 Ti6Al4V ELI Plate guards against brittle fracture.

Defense & Marine Applications: High ballistic limits and corrosion resistance are combined in ballistic armor plating for naval vessels. Fuel consumption is decreased without sacrificing protection because to lightweight construction.

Pressure Vessels: Under controlled conditions, chemical processing equipment that handles aggressive media has better weldability and corrosion resistance.

Export Markets

· North America: USA, Canada, Mexico

· Europe: Germany, France, UK, Italy

· Middle East: UAE, Saudi Arabia, Qatar

· Asia-Pacific: Japan, South Korea, Singapore

· South America: Brazil, Chile, Ecuador

LINHUI TITANIUM has delivered 200,000+ tons to 60+ countries, supporting aerospace manufacturers, defense contractors, and space agencies worldwide.

Why Choose Us

Direct Mill Partnership: Factory-direct pricing eliminates intermediary markups. You receive competitive quotes within 4 hours with transparent cost breakdowns.

Full Traceability System: Each plate tagged with heat number matching EN 10204 3.2 certificates. Our digital tracking system links production records to your purchase order.

Flexible Order Quantities: Stock orders start from 100kg. Custom production accommodates prototype volumes without minimum batch penalties.

Engineering Support: In-house metallurgists review your technical drawings within 24 hours. We assist with material selection, heat treatment specifications, and forming recommendations.

Accelerated Delivery: 200+ tons stock inventory enables 3-7 day shipment. Rush orders supported with expedited production scheduling when standard lead times don't meet your project deadlines.

Packaging & Shipping

Protection Standards: Steel banding is used to secure plates that have been wrapped in moisture-proof paper. For shipments weighing more than 500 kg, steel frames or wooden containers avoid distortion during transit.

Export documentation includes material test certificates (MTC), a packing list, a commercial invoice, and a certificate of origin. Reports from third-party inspections (SGS, TÜV, DNV) are organized upon request.

Options for Logistics: Air freight for urgent needs, sea freight for large shipments. For goods from overseas, we arrange door-to-door delivery and assist with customs clearance.

FAQ

Q: What distinguishes normal Ti-6Al-4V from AMS 4907?

A: Compared to ordinary grades, the ELI variation limits oxygen to 0.13% instead of 0.20%. For damage-tolerant design, this 35% decrease in oxygen content increases fracture toughness by 15–20%.

Q: Is it possible to weld this material?

A: High-purity argon shielding (99.999%) in controlled chambers is necessary for welding. In order to avoid hydrogen embrittlement in weld zones, post-weld stress relaxation at 650°C is advised.

Q: What limitations for thickness are applicable?

A 25mm plate has a tolerance of ±0.76mm, according to AMS 2242. For thicknesses under 10mm, our precision rolling reaches ±0.05mm, enabling tight-tolerance machining.

Q: Is it possible to obtain dual certification with ASTM F136?

A: Material chemistry matches F136 biomedical grade. We provide dual certification when manufacturing process meets both aerospace and medical traceability requirements.

Q: What lead time for custom sizes?

A: Standard production requires 15-25 days after order confirmation. Custom dimensions over 2000mm width extend to 25-40 days depending on mill scheduling.

Request a Quote

Ready to source AMS 4907 Ti6Al4V ELI Plate for your next critical project? Contact our technical sales team at linhui@lhtitanium.com with your specifications, quantity requirements, and delivery timeline. Receive detailed quotations and material certifications within 4 hours to keep your production on schedule.