Titanium watch case

B2B buyers should primarily choose between Grade 2 (Commercially Pure) and Grade 5 (Ti-6Al-4V) titanium. Grade 2 offers excellent corrosion resistance and is easier to machine, making it cost-effective for fashion watches. Grade 5 is significantly harder and stronger, providing superior scratch resistance and a higher polish capability, which is essential for luxury or professional diving watches.

Due to titanium's high melting point and reactivity, ensure the supplier uses CNC (Computer Numerical Control) machining for precision. For complex designs, inquire about Metal Injection Molding (MIM). It is vital to verify the surface treatment technology, such as PVD (Physical Vapor Deposition) or DLC (Diamond-Like Carbon) coating, to enhance surface hardness and prevent the 'grey dulling' effect common in raw titanium.

Demand testing reports according to ISO 22810 (for water-resistant watches) or ISO 6425 (for divers' watches). The supplier should perform vacuum leak tests and high-pressure water tests. Ensure the gasket grooves are precision-machined and that the threading for screw-down crowns is smooth to prevent galling, a common issue with titanium-on-titanium contact.

Products must comply with REACH and RoHS regulations to ensure they are free from harmful substances like lead or cadmium. For the European market, Nickel release testing (EN 1811) is crucial, even though titanium is naturally hypoallergenic, to ensure that any alloys or coatings used do not trigger skin allergies.

Always request a Material Test Report (MTR) or a Mill Test Certificate for every batch. For large orders, employ a third-party inspection service (like SGS or Intertek) to conduct a PMI (Positive Material Identification) test using XRF analyzers before the balance payment is made.

Focus on yield rates and scrap value. Titanium is expensive to machine and generates high waste; suppliers who utilize advanced nesting software or have efficient recycling programs can offer better pricing. On Made-in-China.com, look for 'Diamond' or 'Audited' suppliers who demonstrate vertical integration (from raw ingot to finished case) to reduce middleman markups.

Titanium cases are high-value, low-volume items. Use Air Freight (DAP or DDP terms) for faster turnover. Ensure the HS Code (typically 9111.20) is correctly declared to avoid customs delays. For shipping to the US or EU, ensure the Country of Origin (COO) is clearly marked on the packaging to comply with import labeling laws.

Use Escrow-based payment services provided by reputable platforms like Made-in-China.com to ensure funds are only released upon confirmed receipt of goods. For custom designs, sign a Non-Disclosure Agreement (NDA) and a Quality Agreement that specifies the acceptable AQL (Acceptable Quality Level) limits for cosmetic defects like micro-scratches.