Non-stick cookware China GB4806 test report processing procedure
Date：2025-12-05 09:50:30 Classification
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The GB4806 testing process for non-stick cookware does require meticulous planning, as it involves both coating safety and metal substrate compliance. Obtaining a GB4806 test report for non-stick cookware requires following six core steps, while simultaneously addressing the dual testing requirements for both the metal substrate and the coating.
I. Standards and Testing Scope
Non-stick cookware must comply with two mandatory standards:
- GB4806.9-2016 "Metallic Materials and Articles for Food Contact" (for cookware substrates, such as aluminum alloys and stainless steel)
- GB4806.10-2016 "Coatings and Coatings for Food Contact" (for non-stick coatings, such as Teflon and ceramic coatings)
Special Requirements: If the cookware has silicone handles or plastic accessories, additional testing according to GB4806.7 (plastics) or GB4806.11 (rubber) is required.
II. Processing Procedure: 6 Standardized Steps
1. Selection of Testing Institution
- Qualification Requirements: Must possess CNAS/CMA dual certification (e.g., Dezewei Testing CNAS registration number: L8083). It is recommended to choose an institution with "specialized experience in food contact material testing" (you can request past non-stick cookware testing cases);
- Cost Reference: Domestic institutions charge approximately 800-1200 RMB per item (including substrate + coating), while international institutions charge approximately 1800-2500 RMB. The processing time is 5-7 working days (expedited service takes 3 days, with a 50% increase in cost).
2. Document and Sample Preparation
- Required Documents:
Copy of company business license; product model and specification sheet (specifying pot material, coating type, and thickness);
Raw material certification (e.g., composition report of aluminum alloy sheet, compliance statement from coating supplier);
Brief description of production process (focusing on coating spraying, curing temperature, and other parameters);
- Sample Requirements:
Provide two complete samples for each model (including lid, handle, and other accessories). The pot body must be free of scratches and coating damage;
If it is a set product (e.g., frying pan + wok combination), separate samples must be submitted for testing for each model.
3. Testing Items and Methods
| Testing Objects | Core Items | Standard Limits
| Metal Substrate | Heavy Metal Migration (Lead, Cadmium, Chromium, Nickel) | Lead ≤1.0 mg/kg, Cadmium ≤0.5 mg/kg
| | Sensory Requirements (Odorless, No Foreign Matter) | Complies with GB4806.1-2016 General Requirements
| Non-stick Coating | Overall Migration (Simulated Liquid Immersion Test) | ≤10 mg/dm² (4% Acetic Acid, 20% Ethanol)
| | Specific Migration (e.g., Hexavalent Chromium, Phenol) | Hexavalent Chromium ≤0.05 mg/kg
| | Coating Adhesion (Cross-cut Test) | ≥5B (No Peeling)
| | PFOA (Perfluorooctanoic Acid) Residue (Teflon Coating) | ≤0.025 mg/kg
4. Laboratory Testing and Report Issuance
- Process Nodes:
① Sample separation (separation of substrate, coating, and accessories) → ② Immersion in simulated solutions (4% acetic acid, 20% ethanol, etc., food simulants) → ③ Instrumental analysis (ICP-MS for heavy metals, GC-MS for organic matter) → ④ Data review and draft report generation;
- Report content: Must include product information, testing items, standard basis, measured values, and conclusions. International clients may request bilingual reports in Chinese and English.
5. Rectification and Retesting for Non-conformities
- Common Problems: Insufficient coating adhesion (peeling off during cross-cut adhesion test), excessive PFOA (improper Teflon coating process control);
- Solutions:
Coating Issues: Adjust curing temperature (recommended 280-380℃) or improve primer adhesion;
Substrate Issues: Replace with low-impurity aluminum alloy sheet (e.g., use 3003 series food-grade aluminum);
6. Report Application and Validity
- Usage Scenarios: E-commerce platform entry (required for JD.com/Tmall), supermarket entry, export customs clearance (e.g., Southeast Asian countries often refer to GB standards);
- Validity: Assuming unchanged raw materials and processes, it is recommended to update annually. If the coating supplier is changed or the production process is adjusted, immediate retesting is required.
III. Key Risk Points
1. Coating Thickness Dispute: Some companies reduce coating thickness (<20μm) to cut costs, resulting in failed abrasion resistance tests. It is recommended to control the coating thickness between 25-40μm.
2. Substrate and Coating Compatibility: If the aluminum alloy pot body has not undergone anodizing pretreatment, the coating is prone to peeling. Proof of anodizing process parameters is required.
3. Labeling Compliance: After passing the test, the product must be labeled "For Food Contact Use," "Coating Material," and heat resistance temperature (e.g., "Usage Temperature ≤260℃") to avoid penalties from market regulators due to unclear labeling.
Through the above procedures, it can be ensured that non-stick cookware products comply with national mandatory safety standards, protecting consumer health and providing compliance documentation for market circulation.
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