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View Details8mm Titanium Rod
A popular small-to-mid diameter titanium rod offering a balance of strength and ease of fabrication for pins, linkages, and small structural members.
Product Overview
Bokang's 8mm Titanium Rod is manufactured using advanced vacuum arc remelting technology, ensuring exceptional purity and consistent mechanical properties.
The 8mm titanium rod is a widely utilized size that strikes an effective compromise between mechanical capability and handling convenience. Its diameter is substantial enough to provide good torsional and bending strength for many light to medium-duty applications, yet it remains easy to cut, drill, and machine with standard workshop tools, including bench-top lathes and mills. This size is frequently employed in prototypes, hobbyist projects, and industrial applications where a robust but not overly bulky component is needed.
Common applications include hinge pins, connecting rods in linkages, shafts for small motors or actuators, and as raw material for fabricating custom fasteners like shoulder bolts or clevis pins. Available in grades from ductile CP titanium to high-strength alloys, the 8mm rod can be specified in various surface finishes. Cold-drawn 8mm rod offers improved dimensional accuracy for press-fit applications, while hot-rolled rod provides a cost-effective option for parts that will be fully machined. Its versatility and availability make it a staple in many fabrication and machine shops.
Technical Support & Documentation
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View DetailsTechnical Specifications
Detailed specifications for our 8mm Titanium Rod
| Standard Diameter | 8.0 mm (0.315 inches, approximately 5/16") |
| Tolerance (Standard Cold Drawn) | ±0.04 mm (±0.0016 inches) common; Precision ground available to ±0.01mm |
| Common Supply Lengths | 1m, 3m straight lengths; also available in 6m random lengths |
| Typical Available Grades | Grade 2 (CP Ti), Grade 5 (Ti-6Al-4V), Grade 9 (Ti-3Al-2.5V) |
| Surface Finish | Hot Rolled & Pickled, Cold Drawn (bright), Centerless Ground (mirror-like) |
| Mechanical Properties (Example Grade 2 Annealed) | Tensile: 345 MPa min, Yield: 275 MPa min, Elongation: 20% min |
Key Advantages of Bokang 8mm Titanium Rod
Discover why our titanium wire stands out in the industry
Versatile Prototyping & Hobbyist Size
An ideal diameter for model making, robotics, and prototype development due to its ease of manipulation with common tools and availability from many suppliers.
Efficient for Small Batch Machining
Fits well in collets of smaller machine tools (e.g., mini-lathes), enabling efficient production of small batches of custom pins, spacers, and bushings.
Good Strength in a Compact Form
Provides significant load-bearing capability for its size, making it suitable for critical pins and linkages in lightweight mechanical assemblies.
Material Comparison
8mm Titanium Rod vs. Competitive Alternatives
| Feature | 8mm Titanium Rod (Grade 2) | 8mm Brass Round Bar | 8mm Mild Steel (A36) Round Bar |
|---|---|---|---|
| Primary Material Character | Corrosion Resistant, Medium Strength | Machinable, Conductive, Decorative | Strong, Weldable, Low Cost |
| Corrosion Resistance | Excellent (passive oxide layer) | Good (tarnishes) | Poor (rusts readily) |
| Typical Workshop Fabrication | Cutting, Drilling, Light Bending | Easy Turning, Drilling, Threading | Easy Welding, Forging, Machining |
| Electrical Conductivity | Low | Very High | Moderate |
| Aesthetic Appeal | Modern, can be anodized to colors | Traditional gold-like color | Industrial, requires painting |
Applications
8mm Titanium Rod applications across various industries
Robotics & Automation
- Axle shafts and joint pins for robotic arms and grippers.
- Guide rods and shafts in linear actuators and 3D printer assemblies.
- Structural frame members in lightweight competition robots.
Consumer Products
- Pivot pins for multi-tools, knives, and folding mechanisms.
- Connecting rods for high-end camera tripod heads and brackets.
- Material for custom watch case screws and bracelet pins.
Jewelry Making & Art
- Base material for rings, bracelets, and pendants after anodizing.
- Structural elements in sculptural art where strength and corrosion resistance are needed.
- Rivets and decorative pins in mixed-material jewelry.
Material Selection Guide
How to choose the right titanium wire for your application
1
Evaluate the Required Fit with Other Components
If the 8mm rod must slide smoothly in a bushing or bearing, specify cold-drawn or ground rod with a tight tolerance (e.g., h8 or h9). For a simple through-hole or part that will be machined all over, standard tolerance is adequate.
2
Choose Material Based on End-Use Environment
For outdoor, marine, or chemically exposed applications, titanium's corrosion resistance is paramount. For indoor mechanical assemblies, Grade 2 provides a good balance of properties and lower cost than Grade 5.
3
Consider Secondary Operations
If you plan to thread the rod (e.g., M8 thread), ensure it is in an annealed condition (for Grade 5) to prevent cracking. For anodizing, specify CP titanium (Grade 1 or 2) for the most vibrant and consistent colors.
4
Optimize Purchase Quantity and Form
For one-off projects, buy a single 1m length. For ongoing use, purchasing 3m lengths and cutting as needed is more economical. For jewelry makers, pre-cut short pieces might be available.
Production Process & Quality Control
Our rigorous manufacturing process ensures consistent quality
Initial Hot Rolling to Coil or Bar
Titanium is hot-rolled from larger stock down to a size slightly above 8mm, often in coil form for smaller diameters to improve processing efficiency.
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Acid Pickling for Scale Removal
The hot-rolled material is pickled to dissolve the thick oxide scale, revealing a clean, uniform surface necessary for cold drawing.
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Multi-Pass Cold Drawing
The rod is drawn through a series of progressively smaller dies. Each pass reduces the diameter slightly (e.g., 0.5mm per pass) while improving surface finish and dimensional accuracy.
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Spooling and Intermediate Annealing
After several draws, the work-hardened rod may be spooled and vacuum annealed to restore ductility before final drawing to the exact 8.0mm size.
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Final Sizing and Straightening
A final draw through a precision die sets the exact 8.0mm diameter. The rod is then straightened if supplied in straight lengths.
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Cutting, Inspection, and Packaging
Frequently Asked Questions
Common questions about pure titanium wire
Yes, 8mm is a very common and suitable diameter for pivot pins in folding knives. Grade 5 (Ti-6Al-4V) is often preferred for its high strength and wear resistance. The rod can be cut to length, the ends domed or chamfered, and the center section sometimes turned down to a smaller diameter for washers or bearings. Its corrosion resistance is a major advantage over steel pivots.
Start with sandpaper to remove any scratches: progress through grits (e.g., 220, 400, 600, 800, 1000, 1500, 2000). Use wet sanding to prevent clogging. Then use a polishing compound (like diamond paste or jeweler's rouge) on a felt or muslin buffing wheel attached to a bench grinder or drill. For a consistent finish along the length, rotating the rod in a lathe or drill while applying abrasive is highly effective.
You can, but it's not ideal. Standard HSS drill bits designed for steel will wear quickly and may overheat. For drilling titanium, use sharp, high-quality cobalt (HSS-Co) drills or carbide-tipped drills. Use a slow rotational speed, firm and consistent feed pressure, and ample cutting fluid (or coolant) to keep the temperature down. Peck drilling (drilling in small increments and withdrawing to clear chips) is recommended.
Grade 5 Ti-6Al-4V has a tensile strength of approximately 900 MPa, while 7075-T6 aluminum has a tensile strength of about 570 MPa. So, the titanium rod is about 58% stronger in tension. In bending and torsion, the stiffness (modulus) of titanium (~110 GPa) is also higher than aluminum (~72 GPa), making the titanium rod stiffer as well as stronger.
Yes, it is a common operation. Gas Tungsten Arc Welding (GTAW/TIG) is the preferred method. The rod and plate must be meticulously cleaned (wire brushed, wiped with acetone). The assembly must be properly fixtured, and the weld area must be shielded with argon gas—not just from the torch, but often with a trailing shield to protect the cooling weld. For high-integrity joints, welding should be done in a chamber filled with argon.
Why Choose Bokang Titanium?
18+ years of experience in high-quality titanium materials
18+
Years Experience
28+
Patents & Certifications
200+
Skilled Employees
ISO 13485:2016
Medical Device Certification
Our Commitment to Quality
Changzhou Bokang Special Material Technology Co., Ltd. is Wholesale 8mm Titanium Rod Manufacturers and Custom 8mm Titanium Rod Suppliers. At Bokang Titanium, we adhere to the strictest quality control protocols throughout our manufacturing process. Every batch of pure titanium wire undergoes rigorous testing including dimensional verification, mechanical property testing, surface quality inspection, and chemical analysis to ensure compliance with international standards.
Our quality management system is certified to ISO 9001:2015 and ISO 13485:2016 for medical device applications, ensuring full traceability from raw material to finished product. We maintain comprehensive documentation including material certifications, test reports, and process validation records.
With 18+ years of experience in titanium material production, we have developed specialized expertise in medical-grade, aerospace-grade, and industrial-grade titanium alloys. Our products are trusted by leading medical device manufacturers, aerospace companies, and industrial clients worldwide. We offer OEM/ODM 8mm Titanium Rod for sale.