BT6 Titanium Alloy Tube For Aerospace Industry

 

BT6 titanium alloy tube for aerospace industry is currently the most widely used titanium alloy pipe material, classified as an α+β two-phase titanium alloy. Its designation originates from its chemical composition: Ti-6Al-4V (6% aluminum + 4% vanadium, with the remainder being titanium). This alloy accounts for over 50% of global titanium alloy production and serves as a core material in aerospace, medical, chemical, and other industries.

 

 

Grade: Internationally recognized as Ti-6Al-4V, corresponding to US Grade 5, ASTM B861/862, and AMS 4911.

Type: α+β dual-phase titanium alloy, combining the strength and heat resistance of the α phase with the ductility and machinability of the β phase.

Status: Hailed as the "King of Titanium Alloys," accounting for over 50% of global titanium alloy consumption.

 

 

Element	Ti	Al	V	Fe	O	C	N	H
Range	Remaniner	5.5–6.75	3.5–4.5	≤0.30	≤0.20	≤0.10	≤0.05	≤0.015

Function:

Al (6%): α-stabilizing element, strengthens the matrix, enhances heat resistance and creep resistance.

V (4%): β-stabilizing element, improves plasticity, weldability, and machinability.

Impurity Control: Strict limits on O, N, and H to prevent embrittlement and hydrogen embrittlement.

 

 

Density: 4.5 g/cm³ (only 60% of steel)

Melting point: Approximately 1660°C

Thermal conductivity: Low (approximately 7 W/(m·K))

Modulus of elasticity: 110 GPa

Linear Expansion Coefficient: Operating Temperature Range: -100 to 550°C

Magnetic: Non-magnetic

Tensile strength (σb): ≥895 MPa (approximately 100–140 kgf/mm²)

Yield strength (σr0.2): ≥825 MPa

Elongation at break (δ5): ≥10%

Cross-sectional shrinkage rate (ψ): ≥25%

Hardness: HRC 30 (Surface hardness is not high, but work hardening is pronounced)

 

 

1. Exceptional Strength-to-Weight Ratio

Its strength-to-density ratio surpasses nearly all metallic materials. At equivalent strength levels, it weighs only 60% as much as steel, making it the material of choice for aerospace lightweighting.

2. Excellent Corrosion Resistance

A dense TiO₂ oxide film forms on the surface, delivering outstanding performance in oxidizing and neutral media.

Resists corrosion from seawater, moist chlorine gas, and chloride solutions.

Resists pitting corrosion, crevice corrosion, and stress corrosion cracking.

Note: Corrosion resistance is poor in reducing environments (e.g., hydrochloric acid).

3. Excellent High and Low Temperature Performance

Maintains strength over extended periods at medium temperatures (450-500°C), outperforming aluminum alloys

Retains good plasticity at low temperatures (-253°C) (requires low interstitial element control)

4. Biocompatibility

Non-toxic, non-magnetic, and highly compatible with human tissue, making it an ideal material for medical implants.

 

 

**Aerospace** : Aircraft hydraulic lines, fuel systems, engine cooling pipes, landing gear components, fasteners

**Petrochemicals** : Heat exchangers, condensers, evaporators, corrosive medium pipelines

**Marine Engineering** : Seawater desalination units, subsea pipelines, marine vessel components

**Medical Devices** : Orthopedic implants, minimally invasive surgical instruments, artificial joints

**Energy & Power** : Nuclear power standard pipes, thermal power condenser tubes, heat exchanger tube bundles

**Sports & Leisure** : High-end bicycle frames, racing exhaust systems

 

 

 

E-mail: garychen3215@hotmail.com

Address: No.35, Baoti Rd, Baoji city, Shaanxi Province, China

Contact: Mr. Gary Chen

Phone: +86-917-8883215

Mobile/WhatsApp: +86 13092900605

 

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