Expandable graphite price manufacturers

When sourcing expandable graphite, the price is primarily driven by the expansion ratio (typically ranging from 100 to 300 ml/g) and carbon content (usually 85% to 99%). Higher expansion ratios and higher carbon purity command premium prices. Additionally, particle size (mesh) is critical; larger flakes often yield better expansion but may cost more. You must also verify the pH value and moisture content (ideally <1%) to ensure chemical stability during your manufacturing process.

As a chemical product often used in flame retardants, ensure the supplier complies with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for European markets and TSCA for the US. Since it is often classified as a Class 9 Hazardous Material (UN2210) for shipping, the supplier must provide a valid MSDS (Material Safety Data Sheet) and dangerous goods packaging certification to ensure legal and safe international transit.

The application dictates the specification: for flame retardant plastics or coatings, a high expansion volume at lower temperatures is required. For metallurgical casting, thermal insulation properties are prioritized. If you are in the fireproof seal industry, you need material with a specific initial expansion temperature (SET), usually between 150°C and 220°C. Choosing a grade that exceeds your technical needs will lead to unnecessary procurement costs.

To optimize costs, evaluate the Total Cost of Ownership (TCO), including specialized hazardous material logistics. Procurement through Made-in-China.com allows you to connect with direct manufacturers in Shandong or Heilongjiang provinces, where graphite reserves are high. Bulk discounts typically trigger at 5-10 metric tons, potentially reducing the unit price by 10-15% compared to LCL (Less than Container Load) orders.

The primary risk is logistical rejection or delays due to its classification as a flammable solid. You must ensure the supplier uses UN-approved woven bags or fiber drums and provides a Certificate for Safe Transport of Chemical Goods. Failure to declare it correctly can lead to heavy fines at customs or the seizure of the cargo.

Always request a pre-shipment sample for lab testing of the expansion rate. Use Secure Payment services or Letters of Credit (L/C) for large volumes to mitigate financial risk. When negotiating, leverage the current market price of natural flake graphite, as it is the raw material for expandable graphite; if raw material prices drop, you should push for a corresponding reduction in the finished product price.

Given its weight and chemical nature, Sea Freight is the only economically viable method for bulk orders. Work with freight forwarders who specialize in DG (Dangerous Goods) cargo. Ensure the Incoterms are clearly defined; FOB (Free On Board) is recommended if you have a reliable logistics partner, while CIF (Cost, Insurance, and Freight) may be easier if the supplier has established hazardous goods shipping channels.