ASTM F136 Medical Gr5 ELI Titanium Wire Description
Product Introduction
ASTM F136 Gr5 ELI titanium wire (Ti-6Al-4V ELI/UNS R56401) is an extra-low-interstitial α+β titanium alloy conforming to ASTM F136 for surgical implant applications. Tight limits on oxygen (≤0.13%) and iron (≤0.25%) deliver fracture toughness and fatigue performance superior to standard Ti-6Al-4V, while retaining full strength. Nickel-free, non-toxic, and MRI-compatible, it is the gold-standard material for load-bearing orthopedic and dental implants. Available from φ0.1 mm to φ6.5 mm, customizable up to φ10.0 mm, as straight wire or coil.
Technical Specifications
1. Basic Information
Product Name | ASTM F136 Medical Gr5 ELI Titanium Wire |
Grade Equivalents | ASTM F136 Gr5 ELI/UNS R56401/Ti-6Al-4V ELI |
Standards | ASTM F136, ASTM F1472, ISO 5832-3, ASTM B863 |
Supply Forms | Straight wire, Coil wire |
Surface Conditions | Pickled, Bright, Medical-grade clean finish |
Diameter Range | φ0.1-φ6.5 mm; customizable up to φ10.0 mm |
Straightness | ≤2/1000 |
2. Chemical Compositions
Ti | Al | V | Fe | O | C | N | H | Total Impurities |
Balance | 5.50-6.50% | 3.50-4.50% | ≤0.25% | ≤0.13% | ≤0.08% | ≤0.05% | ≤0.012% | ≤0.40% |
3. Mechanical Properties
Tempers | UTS (MPa) | YS (MPa) | Elongations (%) |
Annealed | ≥860 | ≥795 | ≥10 |
4. Physical Properties
Properties | Values |
Density | 4.43 g/cm³ |
Melting Point | ≈1649°C |
Elastic Modulus | 110 GPa |
Coefficient of Thermal Expansion | 8.6×10⁻⁶/°C |
Thermal Conductivity | 6.7 W/(m·K) |
Magnetic Properties | Non-magnetic |
Biocompatibility | ASTM F136/ISO 5832-3 certified |
Features and Advantages
- Implant gold standard: ASTM F136 certified, the world's highest-volume titanium alloy for orthopedic implants.
- High frcture toughness: ELI-grade interstitial control delivers fracture toughness and fatigue life superior to standard Gr5.
- Exceptional strength-to-weight: UTS ≥860 MPa, density only 4.43 g/cm³ -high load capacity with reduced weight.
- Nickel-free and non-allergenic: Zero nickel content; safe for long-term implantation with minimal rejection risk.
- Full MRI compatibility: Non-magnetic; patients can safely undergo post-operative MRI scans and follow-up.
- Decades of clinical proof: Long clinical history with comprehensive biocompatibility and mechanical performance data.
Performance Solutions
1. Problem: Stainless steel orthopedic implants contain nickel, causing allergic and inflammatory reactions in some patients
Solution: ASTM F136 Gr5 ELI titanium wire is nickel-free, non-toxic, and non-allergenic. A safe implant material proven over decades of clinical use.
2. Problem: CoCr alloy implants with high elastic modulus (>200 GPa) cause stress shielding and bone resorption
Solution: ASTM F136 Gr5 ELI titanium wire has an elastic modulus of 110 GPa, substantially reducing stress shielding and promoting normal bone healing.
3. Problem: Standard Gr5 implants lack sufficient fracture toughness under long-term cyclic loading
Solution: ASTM F136 Gr5 ELI titanium wire has tightly controlled interstitial elements and significantly improved fracture toughness. Suited for high-fatigue-life implant applications.
4. Problem: Metal implants interfere with post-operative MRI, compromising medical decision-making
Solution: ASTM F136 Gr5 ELI titanium wire is non-magnetic with minimal MRI artifacts. Post-operative MRI follow-up can proceed normally.
Applications
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A. Used in total hip stems, knee femoral components, spinal cages, bone screws, bone plates, and intramedullary nails. ASTM F136 certified. The global standard material for orthopedic implants.
B. Used in implants, abutments, abutment screws, and precision attachments. High strength with excellent biocompatibility. Long-term clinical success rate exceeds 95%.
C. Used in pedicle screws, connecting rods, interbody fusion cages, and dynamic spinal stabilization devices. High fatigue strength supports long-term spinal cyclic loading.
D. Used in fracture plates, locking screws, cerclage wire, and tension bands. High strength for secure load-bearing fixation. Good formability for intraoperative contouring.
E. Used in bone anchors, suture anchors, meniscus repair devices, and synthetic ligament fixation. High strength-to-weight ratio, MRI-compatible for convenient post-operative follow-up.