Medical titanium rods | Suppliers of ASTM F67 and ASTM F136 implant-grade pure titanium and titanium alloy rods

Pure titanium rod ASTM F67

Excellent biocompatibility, no alloy elements

Pure titanium, without aluminum and vanadium, no risk of alloy ion release when implanted into the body; excellent bone integration performance, preferred for dental and craniofacial implants, MRI nuclear magnetic resonance has no magnetic interference.

Good plasticity, easy to process and shape

α phase pure titanium, high elongation in annealed state; Gr1/Gr2 can be bent and stamped during surgery, suitable for titanium nets, bone plates, and complex-shaped implant components, with better cold processing performance than TC4ELI (F136).

Strict control of interstitial impurities

Strict control of O, N, C, H, Fe; hydrogen at the highest 0.015%, preventing hydrogen embrittlement; special constraints on corrosion in the implant environment, strong resistance to body fluid corrosion.

4 strength gradients available (Gr1-Gr4)

Gr1: Softest, high plasticity;

Gr2: The most commonly used in medical field, balanced strength and plasticity;

Gr3, Gr4: Strength gradually increases, suitable for components with higher load and light load.

Excellent corrosion resistance

Stable passivation film in human body fluid and chloride ion environment, corrosion-resistant, stable operation in the human body for a long time.

Disadvantages / Limitations

Low overall strength and fatigue performance

Pure titanium strength is much lower than Ti-6Al-4V ELI (ASTM F136). Not suitable for high-load implants: large joints, long bone weight-bearing rods, prone to fatigue failure under repeated alternating loads; Gr4 has the highest strength, but still cannot reach the level of TC4ELI.

Interstitial element fluctuations are sensitive to performance

Oxygen content directly determines strength; for the same grade, oxygen near the upper and lower limits, mechanical differences are obvious; the actual value of oxygen content must be strictly reviewed during procurement.

Must undergo stress relief annealing after cold processing

Cold deformation will generate residual stress; if not removed, there is a risk of stress cracking in the later stage of implanting into the human body.