1. High-temperature toughness and long-term stability (300–500°C)
Long-term service temperature: 450°C; short-term maximum temperature: 500°C, far superior to TC4 (350°C)
Tensile strength at 400°C: ≥780 MPa; excellent creep resistance; no plastic deformation under long-term loading
High temperature fatigue strength: ≥450 MPa (400°C, 10⁷ cycles), suitable for high-frequency vibration conditions in engines
2. Ultra-high specific strength, extreme weight reduction
Density: 4.45 g/cm³ (only 56% of steel); Tensile strength: ≥1030 MPa (age-hardened condition)
Specific strength (strength / density): 231 MPa·cm³/g, twice that of aluminum alloys and 1.5 times that of alloy steels
Replacing 30CrMnSiA steel reduces weight by 35%+, significantly improving aircraft fuel efficiency and payload capacity
3. Corrosion resistance under all operating conditions, long service life
Resistant to salt spray, seawater, and humid-hot environments: corrosion rate **<0.001 mm/a**, requiring no additional coating protection
Resistant to corrosion from jet fuel, hydraulic oil, and acidic/alkaline media, eliminating rust, oxidation, and flaking issues
Lifespan in marine and chemical environments is 3–5 times that of stainless steel, reducing maintenance and replacement costs
4. Excellent processability, suitable for precision manufacturing
Can be forged, rolled, CNC-machined, and welded without cracking or chipping, suitable for complex structural components
Ultrasonic testing (UT) per AMS 2631B: Defects ≤ Φ0.8 mm equivalent flat-bottomed hole, meeting aerospace-grade zero-defect requirements
Dimensional accuracy: Diameter tolerance **±0.02 mm**, length tolerance **±1 mm**, suitable for high-precision assembly
Application Areas (Core Scenarios in Aviation and Defense)
High-pressure compressor discs, blades, load-bearing rings, combustion chamber liners, turbine shafts, and exhaust system components
Engine mounts, suspension lugs, high-temperature piping, and heat shields, suitable for hot-end operating conditions of 400–500°C
- Airframe and Structural Components
Wing spars, landing gear struts, fuselage stiffeners, door hinges, load-bearing joints
Main load-bearing structures for UAVs and helicopters, achieving a balance between lightweight design and high strength
- Defense and High-End Equipment
Missile casings, tail surfaces, rocket engine components, armored vehicle load-bearing structures
Deep-sea exploration vehicles, submarine pressure hulls, high-temperature load-bearing components for offshore platforms
High-temperature reactors, heat exchangers, and high-pressure pipelines for petrochemical applications; gas turbine discs and blades
Medical implants (orthopedic, dental), high-end racing components, precision molds
Manufacturing Process and Quality Control
1. Core Process Flow
Titanium sponge + high-purity alloying elements → Vacuum Arc Remelting (VAR) → β-phase forging → multi-pass rolling → solution treatment and aging → precision straightening → surface treatment → non-destructive testing → packaging and shipment
2. Aerospace Grade Quality Control
Full Composition Inspection: Spectral analysis of every batch, 100% compliant with AMS 4985 standard
Mechanical Properties: Room temperature / high-temperature tensile, impact, hardness, and endurance strength testing
Non-Destructive Testing: 100% Ultrasonic Testing (UT) + Eddy Current Testing (ET)
Traceability: Full traceability of furnace number, lot number, heat treatment records, and test reports
Why Choose Our AMS 4985 Titanium Alloy Bars?
Aerospace Grade Certification: Certified under NADCAP heat treatment and AS9100 aerospace quality management systems, with direct supply to major global aerospace supply chains.
Over 18 Years of Titanium Experience: Production base in Baoji’s “China Titanium Valley,” featuring a 5,000-square-meter modern workshop and imported equipment to ensure precision.
Full-Range Customization: From small rods (φ6 mm) to large forged billets (φ200 mm), supporting everything from small-batch samples to high-volume mass production.
Authoritative Reports: Provide AMS 4985 material certificates, MTC reports, non-destructive testing reports, and heat treatment curves to meet aerospace project acceptance requirements.
Fast Delivery: With stock on hand and flexible production lines, we offer rapid delivery within 7–15 days and support global door-to-door logistics.
FAQ
Q1: What is the difference between AMS 4985 and TC4 (AMS 4928)?
A: AMS 4985 (TC11) is a high-temperature titanium alloy with a long-term service temperature of 450°C and high high-temperature strength; TC4 is a medium-temperature titanium alloy with a long-term service temperature of 350°C, lower cost, and is suitable for general structural components.
Q2: Do you provide aerospace-grade certification reports?
A: We provide AMS 4985 material certificates, MTC reports, ultrasonic testing reports, heat treatment curves, and furnace batch traceability reports to meet aerospace project acceptance requirements.
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