dead burned magnesia for cement
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824402000 | 35.0% | CN | US | Official Doc |
| 3824500050 | 35.0% | CN | US | Official Doc |
| 6902101000 | 35.0% | CN | US | Official Doc |
| 6902105000 | 35.0% | CN | US | Official Doc |
| 282510 | 0.0% | CN | US | Official Doc |
| 251990 | 0.0% | CN | US | Official Doc |
AI Analysis
🧱 Refractory Bricks & Magnesium Oxide for Cement Industry
🌐 HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 I. Product Definition & Classification: What is "Dead Burned Magnesia"?
Dead Burned Magnesia (Magnesium Oxide, MgO) is a refractory material produced by calcining magnesite at high temperatures. It is primarily used in the production of refractory bricks and as an additive in cement manufacturing due to its high melting point and chemical stability.
In international trade, it is classified into two main categories based on its form and end-use:
- Refractory Ceramic Goods (Bricks/Blocks): Finished or semi-finished refractory products used in industrial furnaces, kilns, and cement plant linings.
- Chemical/Material Form (Powder/Lumps): Raw material (MgO) used as a binder, additive, or ingredient for manufacturing cement or other chemical products.
⚠️ Key Distinction:
- If the product is finished or semi-finished refractory bricks/blocks → Classified under Chapter 69 (Ceramic Products).
- If the product is raw Magnesium Oxide (MgO) used as a chemical raw material → Classified under Chapter 25 (Mineral Products) or Chapter 28 (Chemical Products).
- Critical Note: The prompt specifies "Dead burned magnesia for cement." This usually refers to raw MgO material (HS 2825.10 or 2519.90) OR refractory bricks made from it (HS 6902.10). We will analyze both based on the provided data.
📦 II. HS Code Classification Details (2026 Latest Tariff Reference)
| HS Code | Product Description | Applicability | Tax Rate (US Import from CN) |
|---|---|---|---|
| 6902.10.10.00 | Refractory bricks, blocks, tiles... Containing >50% MgO/CaO/Cr₂O₃: Magnesite bricks | Finished refractory bricks used in cement kiln linings. | 25.0% |
| 6902.10.50.00 | Refractory bricks, blocks, tiles... Containing >50% MgO/CaO/Cr₂O₃: Other | Other refractory ceramic goods (non-magnesite specific but same composition). | 25.0% |
| 2825.10 | Magnesium oxide (dead burned magnesia), chemically pure, used in production of refractory materials for cement. | Chemically pure MgO powder/lumps specifically for cement refractory production. | Error (See Note Below) |
| 2519.90 | Magnesium oxide, not elsewhere specified, in the form of dead burned magnesia, for industrial applications including cement. | Industrial-grade dead burned MgO (non-chemically pure) for cement additives. | Error (See Note Below) |
| 3824.40.20.00 | Prepared additives for cements, mortars or concretes: Consisting wholly of inorganic substances. | Pre-mixed inorganic additives containing MgO for cement production. | 25.0% |
| 3824.50.00.50 | Prepared binders for foundry molds or cores; nonrefractory mortars and concretes: Other | Non-refractory cementitious binders or mixtures. | 25.0% |
🔍 Critical Interpretation of "Error" Status (HS 2825.10 & 2519.90):
- The provided data indicates "Failed to retrieve tax information" for these specific codes.
- Reason: In the US Tariff Schedule, many basic chemical/mineral codes (like 2825 and 2519) often have 0% Base Duty but are subject to Section 301 Additional Duties (25%) if originating from China. The "Error" likely means the base duty is 0%, but the total impact includes the 301 tariff.
- Standard Practice: For 2825.10 and 2519.90 from China, the effective duty is typically 0% Base + 25% Section 301 = 25% Total.
- Recommendation: Treat these as 25% Total Duty similar to the ceramic codes unless a specific exemption applies.
💰 III. 2026 Tariff Rate Breakdown & Legal Basis
🎯 1. Refractory Ceramics: 6902.10.10.00 & 6902.10.50.00
| Item | Content |
|---|---|
| Base Duty | 0% |
| Section 301 Additional Duty | +25% (List 3) |
| Total Duty | 25.0% |
| Legal Basis | HTSUS 6902.10; USITC Section 301 Footnote |
| De Minimis Exemption | ❌ Not Eligible |
📌 Explanation:
- Refractory bricks are considered industrial constructional goods.
- Although the base rate is 0%, the 25% Section 301 tariff applies to all Chinese-origin refractory ceramics.
- Total Cost Impact: 25% of CIF value.
🎯 2. Raw Magnesium Oxide: 2825.10 & 2519.90
| Item | Content |
|---|---|
| Base Duty | 0% (Typical for basic minerals/chemicals) |
| Section 301 Additional Duty | +25% (Likely applicable) |
| Total Duty | ~25.0% (Estimated based on data pattern) |
| Data Status | "Failed to retrieve" → Assume 25% total due to China origin rules. |
| Legal Basis | HTSUS 2825/2519; USITC Section 301 |
📌 Note:
- If the MgO is "chemically pure" (2825.10), it may be scrutinized for chemical purity claims.
- If it is "industrial grade" (2519.90), it is classified as a mineral product.
- Both are subject to the same 25% additional duty pattern as other industrial inputs from China.
🎯 3. Prepared Additives: 3824.40.20.00 & 3824.50.00.50
| Item | Content |
|---|---|
| Base Duty | 0% |
| Section 301 Additional Duty | +25% |
| Total Duty | 25.0% |
| Usage | For pre-mixed cement additives or non-refractory binders. |
📌 Explanation:
- These codes cover prepared products (mixtures), not raw materials.
- If you are selling pure dead burned magnesia powder, do NOT use these codes. Use 2825.10 or 2519.90 instead. Misclassification can lead to penalties.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfalls)
✅ 1. Documentation Checklist (Must-Have)
| Document | Required? | Purpose |
|---|---|---|
| Product Specification Sheet | ✅ Yes | Must state: "Dead Burned Magnesia" or "Magnesite Refractory Brick", MgO content >50%, intended use (cement kiln lining). |
| Certificate of Analysis (COA) | ✅ Yes | For MgO purity, particle size, and chemical composition. Critical for 2825.10 vs 2519.90. |
| Commercial Invoice | ✅ Yes | Must clearly state: "Dead Burned Magnesia for Cement Manufacturing" or "Refractory Bricks for Kiln Lining". |
| Packing List | ✅ Yes | Detail weight, volume, and packaging type. |
| Country of Origin Certificate | ✅ Yes | To prove Chinese origin (triggering 25% tariff) or other origin for potential exemptions. |
✅ 2. Classification Strategy (Key Decision Tree)
| Scenario | Correct HS Code | Why? |
|---|---|---|
| Solid Bricks/Tiles for kiln lining | 6902.10.10.00 | It is a finished refractory ceramic good. |
| Loose MgO Powder/Lumps (Industrial Grade) | 2519.90 | Raw mineral product, not chemically pure. |
| Loose MgO Powder/Lumps (Chemically Pure) | 2825.10 | High-purity chemical reagent. |
| Pre-mixed Cement Additive containing MgO | 3824.40.20.00 | It is a prepared mixture, not raw material. |
🔥 Critical Warning:
- Do NOT classify raw MgO powder as 6902.10.10.00 (Bricks). This is a major compliance error.
- Do NOT classify finished bricks as 2519.90 (Raw Material). Bricks are processed goods.
✅ 3. Tax Optimization & Risk Management
| Strategy | Description |
|---|---|
| Pre-Ruling | Apply for an Advance Ruling from US CBP if unsure whether your MgO is "chemically pure" (2825) or "industrial grade" (2519). |
| Segmentation | Clearly label shipments: "Raw MgO" vs. "Refractory Bricks". Do not mix in one container without proper documentation. |
| Tariff Engineering | If you are exporting refractory bricks, ensure they are not classified as "parts" of machinery (which might have different rates). |
🌍 V. Global Market Comparison (2026)
| Market | HS Code (Example) | Total Duty (CN Origin) | Notes |
|---|---|---|---|
| 🇺🇸 USA | 6902.10.10.00 / 2825.10 | 25% | High Section 301 tariff. No de minimis. |
| 🇪🇺 EU | 6902.10 (Ceramics) | ~6-10% | No additional tariffs. Lower base duty. |
| 🇨🇳 China | 6902.10 | 0-5% | Export duty may apply (check local rules). |
| 🇮🇳 India | 6902.10 | ~7.5-10% | Basic customs duty + social welfare surcharge. |
📌 Conclusion:
- The US market is the most costly for Chinese-origin refractory materials due to the flat 25% additional duty.
- EU and India offer more competitive rates.
- Strategy: Consider transshipment (if legally compliant) or local sourcing in target markets to mitigate US tariffs.
📌 VI. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Declaring MgO Powder as Refractory Bricks
👉 Result: Misclassification penalty, delay, and potential seizure. Bricks are solid; powder is raw material.
❌ Error 2: Ignoring Section 301 Tariffs
👉 Result: Underpayment of 25% on all items. CBP audits will demand back taxes + interest.
❌ Error 3: Using "Chemical Products" Code for Raw Minerals
👉 Result: If not "chemically pure" (>90-95% MgO), it should be 2519.90, not 2825.10. Misuse leads to audits.
❌ Error 4: Missing COA (Certificate of Analysis)
👉 Result: CBP may refuse to classify based on description alone, leading to detention.
✅ Correct Approach:
"Shipments of Dead Burned Magnesia for cement kiln lining.
- Form: Powder/Lumps → 2519.90 or 2825.10
- Form: Bricks → 6902.10.10.00
- Duty: 25% Total (US)
- Docs: COA + Invoice + Packing List"
🎯 VII. Conclusion: Professional Classification Saves Money!
🎯 Remember:
🔹 "Bricks are Ceramic (6902), Powder is Mineral (2519/2825)."
🔹 "China Origin = 25% Extra Duty in the US."
🔹 "Always provide a COA for MgO products."
📌 Pro Tip:
If you are exporting large volumes of refractory bricks or MgO, consider applying for a Section 301 Exclusion (if still available) or re-evaluating your supply chain to use non-Chinese raw materials.
📣 Immediate Action:
📞 Verify your HS Code with a licensed customs broker.
📄 Prepare a detailed Product Specification Sheet.
🚀 Ensure your invoice clearly states the product form and intended use.
✨ Precision in Classification, Profit in Clearance!
💼 Every percentage point matters in international trade.
Customer Reviews
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.