Pure 99.995% zinc ingot manufacturers

For high-purity zinc (Special High Grade or SHG), the chemical composition is critical. You must ensure the Zinc (Zn) content is ≥99.995%. Key impurity limits to monitor include Lead (Pb) ≤0.003%, Cadmium (Cd) ≤0.003%, Iron (Fe) ≤0.002%, Copper (Cu) ≤0.001%, and Tin (Sn) ≤0.001%. Request a Certificate of Analysis (COA) for every batch to confirm these levels meet ASTM B6 or EN 1179 standards.

99.995% Zinc Ingots are primarily used in Hot-Dip Galvanizing to protect steel from corrosion, Die-Casting alloys (such as Zamak), and the production of Zinc Oxide for the rubber and pharmaceutical industries. Its high purity is essential for electroplating and brass production, where impurities could compromise the structural integrity or surface finish of the final product.

The product should comply with ISO 752 (Zinc ingots) or ASTM B6-18. For European markets, EN 1179 is the standard. Additionally, ensure the supplier provides REACH and RoHS certifications if the zinc is intended for electronics or consumer goods to prove the absence of restricted hazardous substances.

Ingots should have a clean, smooth surface free from dross, slag, or visible oxidation. Standard weights are typically 20kg to 25kg per ingot, bundled into 1-metric ton pallets secured with steel strapping. Ensure the bundles are shrink-wrapped or covered to prevent moisture contact during sea transit, which causes 'white rust' (zinc carbonate).

Zinc is a LME (London Metal Exchange) traded commodity, meaning prices fluctuate daily. To manage risk, use LME-indexed pricing formulas (e.g., LME Cash Seller + Premium). Avoid suppliers offering fixed prices significantly below market value, as this often indicates fraud or sub-standard purity. Consider hedging strategies or locking in premiums while leaving the base metal price to be fixed at the time of Bill of Lading (B/L).

Always use Irrevocable Letters of Credit (L/C at sight) or Escrow services for large volumes. Never pay 100% upfront via T/T. Conduct third-party inspections (e.g., SGS or Intertek) at the loading port to verify weight and purity before final payment. For reliable sourcing, prioritize Audited Suppliers on Made-in-China.com who have undergone rigorous business license and facility verification.

Zinc is heavy and dense; ensure the container is weight-balanced to prevent damage to the vessel or truck. Request seaworthy packaging with moisture-proof lining. Since zinc is subject to international trade policies and anti-dumping duties in certain regions, verify the HS Code (typically 790111) and the Country of Origin to calculate accurate customs duties and avoid unexpected port delays.

Negotiations should focus on the 'Premium' (the cost above the LME price), which covers refining, logistics, and supplier margin. A competitive premium for 99.995% zinc usually ranges based on regional demand. For MOQs, while large smelters require 25-ton (full container) minimums, specialized distributors on Made-in-China.com may offer smaller trial lots of 5-10 tons for new buyers testing quality.