Zirconia products

Buyers must prioritize material purity and phase stability. For industrial applications, ensure a Zirconia content of ≥94.8% (typically Yttria-stabilized). Key metrics include Vickers Hardness (≥1200 HV), Flexural Strength (800-1200 MPa), and Thermal Expansion Coefficients that match your specific application. For dental Zirconia, translucency levels (ranging from 35% to 49%) and multi-layer gradient technology are critical for aesthetic outcomes.

For medical and dental Zirconia, products must adhere to ISO 13485 quality management systems and possess CE (MDR) or FDA 510(k) clearances. For industrial components used in high-pressure environments, look for ISO 9001 certification and ASTM C1145 terminology standards. If the Zirconia is used in food processing machinery, FDA-grade material certification is required to ensure non-toxicity.

The Sintering Process is the most critical stage; improper temperature control leads to micro-cracks. Ensure the supplier uses Cold Isostatic Pressing (CIP) rather than just dry pressing to achieve higher density and uniform shrinkage. For high-precision components, verify the supplier's CNC grinding capabilities, as Zirconia is extremely difficult to machine after final sintering.

Zirconia is favored for its extreme wear resistance and chemical inertness. Common scenarios include ceramic valves for corrosive fluids, insulating components for electronics, and grinding media for mining. The functional requirement usually centers on fracture toughness, allowing the material to withstand mechanical shocks that would shatter traditional alumina ceramics.

Request a Material Test Report (MTR) and a Scanning Electron Microscope (SEM) analysis to verify grain size. On Made-in-China.com, prioritize Audited Suppliers who offer third-party inspection services (like SGS or Intertek) before the balance payment is made. Small variations in Yttria content can significantly reduce the lifespan of the product.

Zirconia tooling costs are high. Negotiate a lower unit price by committing to an annual volume while requesting a staggered delivery schedule. For custom molds, clarify intellectual property (IP) ownership of the molds. Many suppliers on Made-in-China.com will offer sample fee rebates once the first bulk order exceeds a specific threshold (e.g., $5,000).

Despite its hardness, Zirconia is brittle. Insist on vacuum packaging combined with custom-cut foam inserts and double-walled corrugated boxes. For international sea freight, ensure the pallets are shrink-wrapped and corner-protected. Always include 'Fragile' and 'Do Not Stack' labels in both English and the destination language.

Check the HS Code (typically 6909.11 or 2825.60) for specific import duties in your country. Be aware of Anti-Dumping Duties that may apply to certain ceramic categories in the EU or US. Ensure the supplier provides a Certificate of Origin (CO) to take advantage of any existing Free Trade Agreements (FTA) that could reduce your customs burden.