Calcium stabilized zirconia

When evaluating CaSZ, you must focus on the stabilizer content (typically 3-5% CaO), which determines the phase stability (Cubic or Tetragonal). Key metrics include purity levels (≥99.5%), particle size distribution (D50) for powders, and bulk density for refractory shapes. For high-temperature applications, ensure the material has a melting point of approximately 2600°C and excellent thermal shock resistance.

CaSZ is primarily utilized in metallurgical industries as crucibles for melting precious metals, oxygen sensors in automotive exhausts due to its ionic conductivity, and as refractory coatings for gas turbines. It is also widely used in fine ceramics and abrasive materials where high hardness and chemical inertness are required.

Buyers should prioritize suppliers with ISO 9001:2015 certification for quality management. For specific applications, check for REACH compliance (EU market) and RoHS if used in electronics. Request a Certificate of Analysis (COA) for every batch to verify the chemical composition and trace element limits (like Fe2O3 or SiO2), which can affect performance at high temperatures.

CaSZ is generally more cost-effective than YSZ, making it the preferred choice for large-scale refractory applications where extreme fracture toughness is less critical than thermal insulation and cost-efficiency. However, for high-precision structural ceramics, YSZ may be required despite the higher price point.

The main risks include material degradation due to moisture during sea transit and specification mismatch. Always use vacuum-sealed moisture-proof packaging (such as UN-approved drums or heavy-duty plastic bags). To mitigate quality risks, utilize third-party inspection services (like SGS or Intertek) to verify the phase composition via XRD (X-Ray Diffraction) before the balance payment is made.

Focus on Tiered Pricing based on volume; for orders over 5 tons, aim for a 10-15% discount. Request Gold Member status verification on Made-in-China.com to ensure the supplier has undergone audited site visits. Negotiate for free replacement of goods if the impurity levels exceed the agreed COA thresholds.

For bulk powders, FOB (Free On Board) is recommended to maintain control over freight costs. Ensure the supplier provides a Material Safety Data Sheet (MSDS) and a Non-Hazardous Chemical Certificate to avoid delays at customs. For urgent samples, use air freight with double-layered anti-static packaging.

Utilize Secured Payment services provided by Made-in-China.com to ensure funds are only released upon proof of shipment. For large-scale contracts, consider a Letter of Credit (L/C) to protect both parties against default, and ensure all technical tolerances are explicitly stated in the Proforma Invoice (PI).