Products Description
Product Specifications
| Standards | ASTM B338, ASTM B861, ASTM F67, ASTM F136, ISO 5832 |
| Steel Grades | Gr1, Gr2, Gr5 (Ti-6Al-4V), Gr23 (ELI) |
| Equivalent Standards | UNS R50250, R50400, R56400 |
| Outer Diameter (OD) | 0.3mm-25mm |
| Wall Thickness (WT) | 0.2mm-2.5mm |
| Length | 6/12m, or customized |
| Surface Treatment | Bright annealed |
| Production Process | Cold drawn |
| Condition | Annealed (M) |
Compared to 316L stainless steel, titanium alloys exhibit a corrosion rate that is approximately 60%–80% lower in common pharmaceutical solutions and physiological fluid environments, while also possessing excellent biocompatibility.
When exposed to air or oxygen-containing media, the surface of titanium rapidly forms a dense, stable titanium dioxide (TiO₂) passivation film capable of withstanding corrosion from complex physiological fluids-such as saline solutions, blood, and tissue fluids.
Small Diameter Seamless Titanium Tubing features an outer diameter tolerance of up to ±0.01 mm and an inner wall roughness of Ra ≤ 0.4 μm, making it ideally suited for use in precision medical devices such as catheters, guide wires, and stents.
Customized Services
- Various surface treatment processes-including pickling, electropolishing, mechanical polishing, and passivation-can be selected based on specific application requirements.
- Permanent laser marking services (for batch numbers, size codes, directional indicators, etc.) are provided to support comprehensive traceability management.
- Secondary processing services-such as flaring, swaging, chamfering, angle cutting, laser cutting, and precision end-face grinding-are also available.
Chemical Composition
| Grade | Ti (min) | O (max) | C (max) | N (max) | H (max) | Fe (max) | Al | V |
| Gr.2 | 99.2% | 0.25% | 0.08% | 0.03% | 0.015% | 0.30% | - | - |
| Gr.4 | 98.9% | 0.40% | 0.08% | 0.05% | 0.015% | 0.50% | - | - |
| Gr.5 | Balance | 0.20% | 0.08% | 0.05% | 0.015% | 0.40% | 5.5–6.75% | 3.5–4.5% |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| Gr.2 | ≥345 | ≥275 | ≥20 | ≤80 HB |
| Gr.4 | ≥550 | ≥483 | ≥15 | ≤120 HB |
| Gr.5 | ≥895 | ≥828 | ≥10 | ≤36 HRC |
Possible Alternative Grades
- Grade 9 combines excellent cold-working properties with moderate strength, making it suitable for applications requiring good formability-such as medical device catheters and shafts for minimally invasive surgical instruments.
- For non-implantable devices, 316L Stainless Steel is a viable option; it offers lower costs while providing adequate corrosion resistance.
- Grade 1 is 8%–12% less expensive than Grade 2, making it well-suited for short-term, minimally invasive interventional scenarios, such as disposable biopsy needles and short-term drainage tubes.
application areas
- Minimally Invasive Surgical Instruments, including surgical tools, biopsy devices, etc.
- Injection Needles and Catheters
- Cardiovascular Catheters, Neurovascular Microcatheters, etc.
- Implantable Medical Devices, such as orthopedic fixation components (nails, rods) and spinal implants
- Dental Implant Components, Dental Surgical Instruments, etc.
- Medical Infusion Systems, such as infusion tubing and microfluidic channels
- Diagnostic and Analytical Equipment
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What are the main differences between Grade 23 and Grade 5?
A: Grade 23 (Ti-6Al-4V ELI) is a high-purity version of Grade 5 (Ti-6Al-4V) and is the designated material for surgical implants. Grade 5 is suitable for non-implantable medical devices and industrial applications.
Q: To what level can the inner surface roughness of tubing be achieved?
A: Through precision drawing and electropolishing processes, the inner surface roughness can be controlled to Ra ≤ 0.4 μm (standard specifications); for custom specifications, this can be further reduced to Ra ≤ 0.2 μm.
Q: Do your products comply with the requirements of the ISO 13485 Quality Management System for Medical Devices?
A: Yes, our medical-grade products are manufactured and managed in full compliance with the ISO 13485 Quality Management System for Medical Devices. For every batch of products, we provide an EN 10204 3.1 material certificate, a dimensional inspection report, and complete traceability records.
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