ASTM F67 Grade 2 (UNS R50400) is the most widely used unalloyed titanium in the medical industry. Unlike Grade 4 (which prioritizes high strength) or Ti-6Al-4V (alloyed), Grade 2 offers the optimal balance of strength (YS ≥ 275 MPa) and exceptional ductility (Elongation ≥ 20%). This makes it the preferred material for bone plates, staples, and complex dental components that require contouring without cracking.
As a specialized medical titanium manufacturer, we produce this material specifically for critical implant applications. Our process starts with premium Grade 0 Titanium Sponge and utilizes Triple VAR (Vacuum Arc Remelting) to ensure a homogeneous microstructure free from high-density inclusions (HDI).
We understand that medical components are often produced on high-speed Swiss-type CNC lathes. Therefore, our Grade 2 titanium bars are not just “rolled” but precision centerless ground. We strictly control straightness to ≤0.5mm/m and diameter tolerance to h9 or h8, ensuring smooth bar-feeding and reduced vibration during machining.
Why Choose Our Medical Grade 2 Titanium:
Our ASTM F67 Grade 2 titanium bars are dual-certified to ISO 5832-2, meeting global regulatory requirements for medical devices.
We maintain stricter control over interstitial elements (Fe, O, H) than the standard requires to ensure superior biocompatibility.
| Element | Symbol | ASTM F67 / ISO 5832-2 Limit | Our Typical Value | Benefit |
|---|---|---|---|---|
| Nitrogen | N | ≤ 0.03 | 0.01 | Increases Strength |
| Carbon | C | ≤ 0.08 | 0.02 | – |
| Hydrogen | H | ≤ 0.015 | 0.003 | Eliminates Hydrogen Embrittlement risk |
| Iron | Fe | ≤ 0.30 | 0.12 | Maximizes Corrosion Resistance |
| Oxygen | O | ≤ 0.25 | 0.18 | Optimizes Strength/Ductility balance |
| Titanium | Ti | Balance | Balance | Base Material |
Tested per ASTM E8. High elongation is crucial for implants requiring forming.
| Property | Metric Value | Imperial Value | Requirement |
|---|---|---|---|
| Tensile Strength (UTS) | ≥ 345 MPa | ≥ 50 ksi | Min Required |
| Yield Strength (0.2% Offset) | 275 – 450 MPa | 40 – 65 ksi | Range |
| Elongation (in 4D) | Typical 28% – 35% | – | Standard Req: ≥ 20% |
| Reduction of Area | ≥ 30% | ≥ 30% | Min Required |
Strict adherence to ISO 286-2 ensures compatibility with automated guide bushings.
| Nominal Diameter (mm) | Tolerance h9 (Standard) | Tolerance h8 (Precision) | Max Ovality |
|---|---|---|---|
| 3.00 – 6.00 | +0 / -0.030 mm | +0 / -0.018 mm | 50% of tolerance |
| 6.01 – 10.00 | +0 / -0.036 mm | +0 / -0.022 mm | 50% of tolerance |
| 10.01 – 18.00 | +0 / -0.043 mm | +0 / -0.027 mm | 50% of tolerance |
Safety is non-negotiable in medical manufacturing. We implement a rigorous “Triple-Check” quality system that exceeds basic industry requirements to ensure every bar meets ASTM F67 and ISO 5832-2 standards.
To guarantee the internal integrity required for critical implants, we employ a multi-stage inspection protocol:
Titanium Grade 2 is softer than Grade 5 (Ti-6Al-4V) but can be “gummy” and prone to galling if processed incorrectly. To optimize your Swiss-type machining:
As a specialized medical titanium exporter, we understand that material condition upon arrival is just as important as its manufacturing quality.
We utilize a multi-layer protection system to ensure “Zero-Scratch” delivery:
Q: What is the main difference between ASTM F67 Grade 2 and Grade 4?
A: Grade 2 is softer and more ductile (Elongation ≥20%), making it the ideal choice for parts that require forming, such as bone plates. Grade 4 offers higher tensile strength (≥550 MPa) and is typically preferred for load-bearing components like bone screws or spinal rods.
Q: Is your Grade 2 titanium magnetic?
A: No, ASTM F67 Grade 2 titanium is non-magnetic, making it safe for long-term implants and fully compatible with MRI (Magnetic Resonance Imaging) environments.
Q: Do you offer chamfering services for bar loaders?
A: Yes, we can provide bars with 30° or 45° chamfered ends upon request. This service allows for instant loading into automatic bar feeders on Swiss lathes, saving your team preparation time.
Q: Does your material comply with FDA requirements?
A: While the FDA registers the final medical device, our material is manufactured strictly to ASTM F67 and ISO 5832-2 standards, which are the recognized consensus standards accepted by the FDA for unalloyed titanium implants. Our MTC provides the necessary data for your device Master File (MAF) submission.
Need a reliable medical titanium bar supplier that understands the strict requirements of ISO 13485? Whether you are in the prototyping phase or scaling up production, we provide the quality and traceability you need.
Our titanium products and manufacturing capabilities provide strong value across multiple industries. Here are the key advantages that make HonTitan a reliable partner.
HonTitan makes titanium materials that are very strong for their weight and resist corrosion very well. This makes them stable for use in aerospace, medical, chemical, and marine settings.
We provide fast turnaround for samples and bulk orders. With efficient titanium processing—including cutting, forging, and CNC machining—we ensure precision and speed for every project.
From complex CNC machining to welding, forming, and surface finishing, HonTitan can produce custom titanium parts with features such as holes, slots, threads, grooves, and precise geometries.
