Corrosion resistant material (cm³)
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 6815190000 | 35.0% | CN | US | Official Doc |
| 3926909989 | 22.8% | CN | US | Official Doc |
| 3808999501 | 15.0% | CN | US | Official Doc |
| 6815994170 | 35.0% | CN | US | Official Doc |
| 7210909000 | 35.0% | CN | US | Official Doc |
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🛡️ Corrosion Resistant Material (Volume in cm³)
🌐 HS Code Classification & Customs Clearance Guide | 2026 Updated Tariff Analysis | Expert-Level Import Strategy
📌 One Product, Multiple HS Codes — Know Which One Applies to Your Shipment!
🔍 Important Note:
The classification of corrosion resistant material depends heavily on material composition, form, and intended use.
The same product can fall under different HS codes depending on its physical and chemical nature — even if the volume (e.g., cm³) is identical.
📦 1. HS Code Classification Breakdown (2026 Updated Tariff Authority)
Below are the five most likely HS codes for "corrosion resistant material" based on material type, function, and structural form — with detailed tax analysis and classification logic.
| HS Code | Product Description | Material/Function Clue | Applicable When… |
|---|---|---|---|
6815.19.00.00 |
Carbon or mineral-based corrosion-resistant materials (e.g., graphite, carbon composites, mineral coatings) | Contains carbon, graphite, mineral binders, or inorganic chemical compounds | Used in industrial linings, chemical tanks, or high-temperature environments |
3926.90.99.89 |
Other plastic products (e.g., polymer-based coatings, resin composites, plastic-lined materials) | Made of plastics, organic polymers, or synthetic resins | Applied as protective layers on metal, pipes, or tanks |
3808.99.95.01 |
Other chemical preparations (e.g., biocidal coatings, anti-corrosion agents, chemical inhibitors) | Chemical formulation, liquid/solid additive, biocidal or inhibiting action | Used as coating agents, additives, or treatment solutions |
6815.99.41.70 |
Other stone or mineral-based materials (e.g., asphalt-resin composites, mineral-polymer blends) | Contains asphalt, resin, bitumen, or mineral aggregates | Found in pipe linings, floor coatings, or protective layers in construction |
7210.90.90.00 |
Other materials with protective coatings (e.g., coated steel, galvanized sheets, metal with corrosion-resistant layer) | Metal substrate with coating, plating, or cladding | Common in structural steel, pipelines, or industrial equipment |
⚠️ Critical Insight:
- Volume (cm³) alone does not determine the HS code — it’s the material identity and functional purpose that matter. - A 100 cm³ sample of a graphite paste ≠ a 100 cm³ plastic resin ≠ a 100 cm³ liquid inhibitor → each may have entirely different tariffs.
💰 2. 2026 Tariff & Duty Breakdown (U.S. Import Focus)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: November 10, 2025 (with ongoing enforcement)
🎯 1. 6815.19.00.00 — Carbon/Mineral-Based Corrosion Materials
| Item | Detail |
|---|---|
| Base Duty | 0% |
| USITC Section 301 Tariff | +25% |
| IEEPA (International Emergency Economic Powers Act) | +10% |
| Total Effective Duty | 35.0% |
| Tax Calculation | CIF Value × 35.0% |
| De Minimis Threshold | ❌ Not applicable (denied) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:6815.19.00.00 → FOOTNOTE:9903.88.01 |
📌 Why This Applies:
- Matches carbon-based, graphite, or mineral-chemical compositions. - No conflict with "other carbon or mineral products" under HS 6815.19. - Common in chemical reactors, electrochemical cells, or high-temperature linings.
🎯 2. 3926.90.99.89 — Plastic/Organic Polymer-Based Coatings
| Item | Detail |
|---|---|
| Base Duty | 5.3% |
| USITC Section 301 Tariff | +7.5% |
| IEEPA Tariff | +10% |
| Total Effective Duty | 22.8% |
| Tax Calculation | CIF Value × 22.8% |
| De Minimis Threshold | ❌ Not applicable |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3926.90.99.89 → FOOTNOTE:9903.88.01 |
📌 Why This Applies:
- Based on plastic, resin, or organic polymer content. - Falls under "other plastic products" (3926.90.99) as a non-specific category. - Typical in pipe linings, tank coatings, or flexible protective layers.
🎯 3. 3808.99.95.01 — Chemical Biocidal & Anti-Corrosion Agents
| Item | Detail |
|---|---|
| Base Duty | 5.0% |
| USITC Section 301 Tariff | 0% |
| IEEPA Tariff | +10% |
| Total Effective Duty | 15.0% |
| Tax Calculation | CIF Value × 15.0% |
| De Minimis Threshold | ❌ Not applicable |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → 3808.99.95.01 → FOOTNOTE:9903.88.01 |
📌 Why This Applies:
- Matches chemical formulations used for corrosion inhibition, bacteriostatic treatment, or anti-fouling. - Not a solid material — often a liquid, powder, or gel. - Used in cooling systems, water treatment, or pipeline inhibitors.
🎯 4. 6815.99.41.70 — Other Stone/Mineral-Based Materials (Resin/Asphalt Blends)
| Item | Detail |
|---|---|
| Base Duty | 0% |
| USITC Section 301 Tariff | +25% |
| IEEPA Tariff | +10% |
| Total Effective Duty | 35.0% |
| Tax Calculation | CIF Value × 35.0% |
| De Minimis Threshold | ❌ Not applicable |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → 6815.99.41.70 → FOOTNOTE:9903.88.01 |
📌 Why This Applies:
- Includes asphalt, bitumen, resin-bound aggregates, or mineral composites. - Used in pipeline linings, flooring systems, or industrial sealants. - Matches "other stone or mineral products" with non-metallic bonding agents.
🎯 5. 7210.90.90.00 — Coated/Clad Metal with Corrosion Protection
| Item | Detail |
|---|---|
| Base Duty | 0% |
| USITC Section 301 Tariff | +25% |
| IEEPA Tariff | +10% |
| Total Effective Duty | 35.0% |
| Tax Calculation | CIF Value × 35.0% |
| De Minimis Threshold | ❌ Not applicable |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → 7210.90.90.00 → FOOTNOTE:9903.88.01 |
📌 Why This Applies:
- Applies to metal sheets, tubes, or structural parts with protective coatings (e.g., galvanized steel, epoxy-coated steel). - The substrate is metal, and the corrosion resistance comes from the layer. - Common in construction, oil & gas, or marine infrastructure.
🛠️ 3. Customs Clearance Best Practices (Pro Tips to Avoid Delays)
✅ 1. Required Documentation (MUST-HAVE)
| Document | Why It’s Critical |
|---|---|
| ✅ Technical Data Sheet (TDS) | Proves material composition (e.g., graphite, epoxy, resin, asphalt, polymer) |
| ✅ Safety Data Sheet (SDS) | Confirms chemical nature, toxicity, flammability — key for classification |
| ✅ Product Photos (Clear & Labeled) | Shows form (liquid, paste, solid, coating) and appearance |
| ✅ Commercial Invoice (Detailed) | Must include: HS code, material type, intended use, volume in cm³, CIF value |
| ✅ Certificate of Origin (CO) | Needed for tariff eligibility — especially if sourcing from non-China countries |
| ✅ Test Reports (e.g., ASTM, ISO) | Validates corrosion resistance, chemical stability, adhesion |
✅ 2.申报技巧（Key Rules of Thumb）
🔥 "Material First, Form Second, Use Last — Or You’ll Pay 35%!"
| Scenario | Correct HS Code | Common Mistake |
|---|---|---|
| Graphite-based paste in 50 cm³ tube | 6815.19.00.00 |
Misclassified as plastic → 22.8% |
| Epoxy resin coating in 100 cm³ container | 3926.90.99.89 |
Mistaken as chemical → 15% |
| Liquid anti-corrosion agent (biocide) | 3808.99.95.01 |
Misclassified as plastic → 22.8% |
| Asphalt-resin blend for pipe lining | 6815.99.41.70 |
Reported as metal → 35% |
| Galvanized steel sheet (coated) | 7210.90.90.00 |
Called "metal" only — but must specify coating |
✅ 3. Special Cases & Risk Mitigation
| Situation | Recommended Action |
|---|---|
| Mixed material (e.g., resin + graphite) | Submit material ratio (e.g., 70% resin, 30% graphite) → Use dominant component rule |
| Sample shipment (10 cm³) | Still subject to full tariff — de minimis not allowed for China-origin |
| Re-export or return | Must declare original HS code and duty paid |
| Custom formulation | Apply for Advance Ruling (Pre-Clearance) to lock in HS code and tariff |
| Sourcing from Vietnam/Mexico | Can avoid IEEPA + USITC tariffs — apply for origin change |
🌍 4. Global Market Comparison (2026)
| Country | Recommended HS Code | Tariff | Certification Required | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | Depends on material | 15%–35% | FDA, EPA, SDS | No de minimis for China-origin |
| 🇨🇳 China | Varies | 5%–13% | CCC, RoHS | No IEEPA/USITC tariffs |
| 🇪🇺 EU | Varies | 0%–10% | CE, REACH | No US-style附加税 |
| 🇦🇺 Australia | Varies | 5% | RCM | No IEEPA |
| 🇯🇵 Japan | Varies | 0% | PSE | No附加税 |
📌 Key Insight:
- China-origin products face the highest tariffs in the U.S.
- Vietnam/Mexico/Thailand origin can avoid 35% tariff — consider supply chain shift.
📌 5. Common Mistakes & Legal Risks
❌ Mistake 1: Declaring all corrosion materials as 3808.99.95.01 (chemical)
👉 Risk: If material is solid/graphite/plastic → underpaid duty, penalties, seizure
❌ Mistake 2: Using “corrosion resistant material” as product name without specifying composition
👉 Risk: Customs cannot classify → delayed release, random audit
❌ Mistake 3: Assuming volume (cm³) determines tariff
👉 Risk: 100 cm³ of resin ≠ 100 cm³ of graphite → wrong HS code → wrong duty
❌ Mistake 4: Not providing SDS or TDS
👉 Risk: Customs may reclassify or demand sample testing
✅ Best Practice:
Use precise, technical language in invoice and packing list:
"Graphite-based anti-corrosion paste, 50 cm³, for chemical reactor lining, 80% graphite, 20% binder — SDS & TDS attached."
🎯 6. Final Verdict: How to Choose the Right HS Code?
🔥 Rule of Thumb:
- If it’s carbon/graphite/mineral →6815.19.00.00or6815.99.41.70→ 35% duty
- If it’s plastic/resin/polymer →3926.90.99.89→ 22.8% duty
- If it’s liquid/chemical/biocidal →3808.99.95.01→ 15% duty
- If it’s coated metal →7210.90.90.00→ 35% duty📌 Bottom Line:
The material is king. The volume is just data.
📣 Immediate Action Plan
📞 Contact a U.S. Customs Broker + Provide:
- Product photos
- SDS & TDS
- Commercial invoice
- Origin proof✅ Request an Advance Ruling (Pre-Clearance) to lock in the correct HS code and avoid 35% surprise duty.
🚀 Save Thousands:
A $10,000 shipment with 35% duty = $3,500 in taxes
A correctly classified $10,000 shipment = $1,500 → Save $2,000!
✨ Professional Customs, Precision Classification, Zero Surprises!
💼 Your shipment’s success starts with the right HS code.
📌 Remember:
"One wrong code can cost you 35% — but the right one saves you thousands."
🔗 Get your HS code pre-approved today — before the truck arrives!
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About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.