GR5 Titanium Medical Bar
Overview
GR5 Medical Titanium Rod is manufactured from Ti-6Al-4V ELI (Extra Low Interstitials) - the most widely used titanium alloy in orthopedic implant manufacturing globally. With UTS ≥ 860 MPa and excellent fatigue resistance, it's engineered for devices that bear physiological loads every day.
Our rods are produced in Baoji, China's Titanium Valley, using double-VAR melted ingots, precision forging, and centerless grinding. Every lot is verified by Baoti Experimental Center and the Northwest Institute for Nonferrous Metal Research.
The highest-strength medical titanium alloy for load-bearing implants. 2.5× stronger than CP Grade 2 - trusted by orthopedic and spinal implant manufacturers worldwide.
Looking for higher ductility over strength? Our GR2 CP Titanium Rod offers 20%+ elongation with superior biocompatibility for non-load-bearing applications.
860 MPa
Tensile Min.
114 GPa
Elastic Modulus
795 MPa
Yield Strength
Ti-6Al-4V
6% Al, 4% V, extra low interstitials
.
Manufacturing Process
Double VAR Melting - Homogeneous ingot with minimal segregation
Beta Forging - Multi-pass forging above β-transus for refined grain structure
Hot Rolling / Drawing - Controlled thermomechanical processing to target diameter
Vacuum Annealing - Stress relief per AMS 4935 / ASTM F136 requirements
Centerless Grinding - h7/h8 tolerance, Ra ≤ 0.8μm finish for implant blanks
100% Inspection - UT, tensile, hardness, chemistry, dimensional verification
Final Testing & Certification
100% ultrasonic inspection. Tensile, hardness, microstructure, and dimensional verification per lot. EN 10204 Type 3.1 MTC with every shipment. Third-party inspection available on request.
Why Ti-6Al-4V ELI Dominates Implant Manufacturing
Exceptional Strength
With UTS ≥ 860 MPa and yield ≥ 795 MPa, Ti-6Al-4V ELI handles the highest physiological loads - from hip replacement stems to spinal fixation systems - without deformation or fatigue failure.
- 2.5× stronger than CP Grade 2 titanium
- Fatigue limit ~500 MPa at 10⁷ cycles
- Superior strength-to-weight ratio (40% lighter than CoCr)
Proven Biocompatibility
Decades of clinical evidence across millions of implantations. Ti-6Al-4V ELI produces no adverse tissue response, promotes osseointegration, and is safe for nickel-sensitive patients (contains zero nickel).
- ISO 10993 biocompatibility compliant
- FDA Master File recognized for 510(k)
- Nickel-free: safe for 100% of patients
Reduced Stress Shielding
At ~114 GPa, Ti-6Al-4V's modulus is 40% lower than cobalt-chromium and 40% lower than stainless steel - significantly reducing the stress shielding effect that causes peri-implant bone resorption.
- E-modulus: 114 GPa (vs. CoCr 230 GPa, SS 190 GPa)
- Promotes physiological load transfer to bone
- Reduces risk of aseptic loosening long-term
Corrosion & Fatigue Resistance
The self-passivating TiO₂ oxide film protects against pitting, crevice corrosion, and fretting corrosion at modular junctions - the most common failure mode in hip and knee implants.
- Excellent fretting corrosion resistance at taper junctions
- Stable passive film in blood and tissue fluid
- Compatible with all sterilization methods
Precision-Machined Quality
Centerless ground to h7 tolerance with Ra ≤ 0.8μm - ready for your CNC to machine into femoral stems, tibial trays, spinal cages, and dental abutments with minimal material waste.
- Diameter tolerance: h7 / h8 per ISO 286
- Straightness: ≤ 1mm/m on ground bars
- Consistent machinability lot-to-lot
Complete Traceability
Every rod ships with EN 10204 Type 3.1 certification - full chemistry, mechanical test results, NDE reports, and lot traceability from sponge to finished product. Ready for your regulatory submission.
- Mill Test Certificate per EN 10204 Type 3.1
- Heat number traceable to VAR melt
- SGS / TÜV / BV third-party inspection available
Specifications
| Material Grade | Standard | Diameter Range | Length Range | Surface Finish | Manufacturing Process |
| Grade 5 / Ti-6Al-4V / UNS R56400 / TC4 (High-Strength Alpha-Beta Medical Titanium Alloy) | ASTM F136, ISO 5832-3, ASTM B348, AMS 4928 | 1.0mm – 200mm (Micro rods to heavy structural bars) | 100mm – 6000mm (Customized cutting / cut-to-size available) | Centerless Ground, Polished (Bright Surface, Ra ≤ 0.8μm / Ra ≤ 0.4μm), Peeled, Pickled | Forged (for large diameters), Hot rolled, Cold drawn (for fine rods and high-precision applications) |
Where GR5 Titanium Delivers Results
The go-to alloy for every load-bearing implant and precision surgical device.
Joint Replacement & Trauma
Hip stems, femoral components, tibial trays, bone screws, spinal cages, and trauma fixation plates - the highest-demand implant applications.
Dental Implant Systems
Endosseous fixtures, multi-unit abutments, and bar-retained prosthetics. Higher strength enables narrower implant designs for limited bone volume.
Surgical instruments and operating room equipment
Retractor handles, bone cutting guides, surgical drill bit blanks, trial implant sizing instruments, and high-stress surgical tool components requiring superior hardness and wear resistance over GR2 pure titanium.
Cardiovascular Devices
Custom cranial plates, orbital floor meshes, mandibular reconstruction plates, and midface fixation - patient-specific or standard geometries.
FAQ
Q: Are you a manufacturer or a trading company?
A: We are a professional and experienced titanium products manufacturer in China.
Q: Can you provide customized processing?
A: Yes. Baoji Yibaite supports cutting, bending, stamping, CNC machining, and deep drawing according to customer drawings.
Q: What is the delivery time?
A: Regular size in stock within 3–7 days; customized production about 10–15 working days.
Q: What standards do your GR5 Titanium Medical bars comply with?
A: Our GR5 medical titanium bars strictly comply with international standards including ASTM F1472 / ISO 5832-3 (for wrought Ti-6Al-4V surgical implant material), ASTM B348, ASME SB348, and ISO 13485 quality management requirements. We provide a full Material Test Certificate (MTC) compliant with EN 10204 3.1, which includes traceable chemical composition, mechanical property testing (tensile strength ≥ 895 MPa, yield strength ≥ 830 MPa, elongation ≥ 10%), and 100% Ultrasonic Test (UT) results to guarantee a flawless internal structure free of cracks, pores, or inclusions - fully meeting the stringent requirements of load-bearing permanent implant and surgical instrument applications.
Q: What surface finishes are available?
A: Pickled surface, polished, brushed, sandblasted, and mirror finish are all optional.
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