ASTM F136 Gr5 Eli (Gr23) Titanium Foil Description
Introduction
ASTM F136 Gr5 ELI (Gr23) titanium foil is an implant-grade ultra-thin titanium alloy foil and strip based on Ti-6Al-4V ELI, specially developed for surgical implant and high-precision medical device applications. It complies with ASTM F136 and ISO 5832-3 requirements for wrought titanium-6 aluminum-4 vanadium ELI alloy used in surgical implantation.Compared with standard Gr5 titanium foil, Gr23 foil features stricter control of oxygen, iron and other interstitial elements, which provides better ductility, higher fracture toughness, more stable fatigue performance and stronger long-term biocompatibility. Compared with commercially pure titanium foil such as Gr1, Gr2 and Gr4, it offers significantly higher mechanical strength while maintaining excellent corrosion resistance and clean-surface processability.
ASTM F136 Gr23 titanium foil is suitable for precision medical stamping parts, implant auxiliary components, orthopedic and dental device parts, minimally invasive instrument structures and other demanding applications requiring reliable mechanical performance and stable in-vivo service safety.
Standard specification: thickness 0.02-1.0 mm, width 15-680 mm
Supply forms: coil foil, strip foil, cut-to-length sheet, precision slit strip
Surface conditions: bright, pickled, matte, medical-grade clean finish
Custom processing: precision slitting, leveling, cutting, surface cleaning and customized dimensions
Technical Specifications
Equivalent grades: Gr23 / Ti-6Al-4V ELI / UNS R56401
Executive standards: ASTM F136, ISO 5832-3
Material type: extra-low-interstitial alpha-beta titanium alloy
Delivery status: annealed (M) / customized processing by agreement
Chemical composition: Ti balance, Al 5.50-6.50%, V 3.50-4.50%, Fe <=0.25%, O <=0.13%, C <=0.08%, N <=0.05%, H <=0.012%, total impurities <=0.40%
Physical properties: density 4.43 g/cm3, melting point approx. 1649 C, elastic modulus 110 GPa, non-magnetic
Mechanical properties: tensile strength >=860 MPa, yield strength >=795 MPa, elongation >=10%, excellent fatigue performance for cyclic medical loading
Production Line Process & Equipment Capabilities
Process flow: Melting → Forging → Hot Rolling Breakdown → Multi‑pass 20‑high Precision Cold Rolling → Ultrasonic Cleaning → Continuous Online Annealing → Skin Pass Treatment → Slitting → Inspection and Packaging.
Major equipments: 750 mm 20‑high Precision Rolling Mill, Ultrasonic Cleaning Line, Continuous Annealing Line, High-Precision Leveling Line, Slitting Line, Grinding Line.
Key Equipments & Process Capabilities
- 20-high Precision Rolling Mill
- Maximum rolling speed: 400 m/min, maximum rolling force: 3500 KN. Enables stable thickness reduction and precise flatness control for ultra-thin strip.
- Ultrasonic Cleaning Line: Surface dyne value reaches above 40 after cleaning, with a maximum line speed of 30 m/min, ideal for high-standard surface requirements.
- Continuous Annealing Line
1). Adopting 7‑zone electric heating control.
2). Maximum operating temperature: 1100℃.
3). Temperature control accuracy: ±2℃.
4). Non-stop continuous annealing to ensure uniform microstructure and stable material properties.
- High-Precision Leveling Line: Maximum speed: 150 m/min. Effectively improve strip flatness, reduce residual stress, and enhance stability of subsequent processing.
- Slitting Line: Precision slitting for strip range from 0.02–1.0 mm in thickness, with width tolerance control within ±0.1 mm to meet high-precision slitting requirements.
- Grinding Line: Used for functional surface treatment. Improve surface consistency and adhesion, enhancing performance for subsequent coating, lamination and general industrial applications.
Features
- Implant-grade chemistry: extra-low interstitial control for improved biosafety and long-term stability
- Better toughness: better ductility and fracture toughness than standard Gr5 titanium foil
- Excellent fatigue resistance: suitable for long-term cyclic loading in medical applications
- Corrosion resistance: outstanding resistance in body fluid and sterilization environments
- Surface quality: clean and uniform surface suitable for laser cutting, stamping and precision forming
- Non-magnetic behavior: suitable for medical imaging-related applications
Applications & Solutions
ASTM F136 Gr23 titanium foil helps solve the common problems of insufficient toughness, poor fatigue reliability and inconsistent surface cleanliness found in conventional high-strength thin titanium materials. It is especially suitable for applications that require reliable strength, precision processing and long-term implantation safety.
Orthopedic field
implant auxiliary components, bone fixation tabs, clips and thin-wall structures
Dental field
dental device and implant accessory parts
Medical devices
precision stamped parts, minimally invasive device structures and clean medical equipment components
Processing advantages
supports precision cutting, slitting, leveling and customized sheet or strip delivery
Core Technical Advantages
Strict control over surface color difference to ensure uniform appearance and color consistency.
Precise dimension control to meet tolerance specification requirement.
Self-developed defatting formula can improve surface cleanliness.
Optimized leveling tension to ensure excellent material flatness.
Sanding process to enhance surface uniformity and texture.
Stable annealing process to guarantee the overall material properties.
High-precision slitting technology can increase product yield and quality.
implant auxiliary components, bone fixation tabs, clips and thin-wall structures
dental device and implant accessory parts
precision stamped parts, minimally invasive device structures and clean medical equipment components
Custom Processing Capabilities
1. Production Line Strength
Baoji Titanium Valley Ti-Ni-Zr Material Processing Co., Ltd. has invested a total of $36.2 million in high-end strip and foil production, establishing an advanced production line for titanium, nickel, zirconium and their alloy strips and foils in the world.
The production line specializes in the stable rolling of ultra-thin, wide-width strips, overcoming critical industry challenges such as springback, difficult shape control and inconsistent material properties. We achieved stable mass production of high-end titanium foil.
With an annual capacity of 3,000 tons, the production line is expected to realize an annual output value of $116 million, supporting large-volume supply demands from high-end customers in aerospace, electronics, new energy, chemical engineering and other industries.
2. The production line is equipped with advanced equipment in the world which can ensure high precision and stability for every coil of strip and foil:
- 750 mm 20 High Precision Rolling Mill: Enables precision rolling of ultra thin wide width strips.
- Ultrasonic Cleaning Line: Ensures surface cleanliness and uniform microstructure.
- Continuous Annealing Line: Improves stability of material properties.
- High-Precision Leveling Line: Optimizes strip shape and flatness.
- Slitting Line: High precision slitting suitable for ultra thin materials.
- Grinding Line: Enhances surface consistency and finish.
Through precision equipment and optimized processes, the production line has successfully broken through seven core technical barriers for strip and foil products, including surface color difference control, thickness tolerance control, uniform annealing structure, high-precision slitting, and high-performance cleaning processes.
3. We provide one-stop custom processing from raw materials to finished products, ensuring stable supply of high-precision, high-performance products to our customers.
- Materials: titanium, nickel, zirconium and their alloys
Specifications: thickness 0.02–1.0 mm, width 15–680 mm, customize according to requirement - Surface treatment: cleaning, sanding, annealing; available in bright, matte and other function surface
- Dimensional & flatness control: precise control of thickness, tolerances and surface flatness
- Slitting & cutting to length: suitable for ultra-thin wide strips with high yield and stable quality
- Mass delivery: annual capacity of 3,000 tons to meet large-volume, high-standard custom orders
Contact Us
Telephone: +86-13530170059
Email: sales@titaniumvalleys.com
Address: Technology Innovation Industrial Park, Titanium Valley Building, High tech Development Zone, Baoji, Shaanxi, China.