vanadium based mold sand hardener
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824993600 | 24.0% | CN | US | Official Doc |
| 3815190000 | 35.0% | CN | US | Official Doc |
| 3824992900 | 41.5% | CN | US | Official Doc |
| 3815901000 | 41.5% | CN | US | Official Doc |
| 3824993600 | 24.0% | CN | US | Official Doc |
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AI Analysis
π© Vanadium-Based Mold Sand Hardener (Foundry Chemicals)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Bonding Strategy
π 1. Product Definition: What is a "Vanadium-Based Mold Sand Hardener"?
In the foundry industry, Mold Sand Hardeners (also known as Curing Agents or Catalysts) are critical chemical additives used in Silica Sand Molding (especially for COβ silicate processes).
Vanadium-Based Hardeners are specialized catalysts where Vanadium compounds accelerate the setting time and improve the green strength and hot strength of sand molds. Due to the specific chemical nature of Vanadium (a transition metal), customs authorities may classify this product differently based on whether they view it as a general chemical mixture or a specific catalyst.
β οΈ Key Classification Dilemma:
- If viewed as a generic chemical binder/curing agent for foundry sand β Chapter 38 (Miscellaneous Chemical Products).
- If viewed strictly as a catalyst for polymerization/curing β Chapter 38 (Catalysts).
- Note: The following analysis breaks down the four most probable HS Codes based on current trade data.
π¦ 2. HS Code Classification Matrix (2026 Tariff Schedule)
| HS Code | Summary Description | Key Classification Logic | Total Tariff (CNβUS) |
|---|---|---|---|
3824.99.36.00 |
Vanadium-based curing agent; belongs to other inorganic compound mixtures. | Classified under 3824 (Prepared Binders for Foundry Molds). Viewed as a mixture of inorganic compounds used for sand molding. | 24.0% |
3815.19.00.00 |
Curing agent falls under Catalysts; Vanadium component aligns with supported catalyst attributes. | Classified under 3815 (Catalysts). Viewed strictly as a chemical catalyst that accelerates reaction without being consumed. | 35.0% |
3824.99.29.00 |
Vanadium-based curing agent; belongs to chemical products & preparations. | Classified under 3824 (Other Prepared Binders). General "chemical product" bucket when specific binder codes don't apply. | 41.5% |
3815.90.10.00 |
Vanadium-based curing agent; matches Vanadium material; curing agent = reaction initiator/catalyst. | Classified under 3815 (Other Catalysts). Specific sub-heading for non-prepared catalysts where Vanadium is the active ingredient. | 41.5% |
π° 3. Detailed Tariff Breakdown (China Origin β USA)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: Post-2025 Tariff Regime (Includes Section 301 & IEEPA additions)
π― Option 1: 3824.99.36.00 (Lowest Tariff: 24.0%)
Category: Other Prepared Binders for Foundry Molds / Inorganic Mixtures
| Item | Detail |
|---|---|
| Base Duty | 6.5% |
| Section 301 (Add-on) | +7.5% |
| IEEPA (122 Clause) | +10.0% |
| Total Tariff | 24.0% |
| Calculation | CIF Value Γ 24% |
| Logic | Customs accepts this as a Foundry Binder. Vanadium is just a component of the mixture. This is often the preferred route if the product is sold specifically as "Mold Sand Hardener" for silica sand. |
π Interpretation:
- The "7.5%" Section 301 rate is lower than the standard 25% for some chemical categories, potentially due to specific exclusion lists or lower-tier sub-heading classification.
- Critical: Must prove it is a "Prepared Binder" and not just pure Vanadium salt.
π― Option 2: 3815.19.00.00 (Medium Tariff: 35.0%)
Category: Catalysts (Other)
| Item | Detail |
|---|---|
| Base Duty | 0.0% |
| Section 301 (Add-on) | +25.0% |
| IEEPA (122 Clause) | +10.0% |
| Total Tariff | 35.0% |
| Calculation | CIF Value Γ 35% |
| Logic | Classified as a Catalyst. Base duty is 0%, but the flat 25% Section 301 tariff applies to all catalysts from China, plus 10% IEEPA. |
π Interpretation:
- Even though the base duty is 0%, the high add-ons make it more expensive than Option 1.
- Use this only if the product is marketed strictly as a catalyst and not a binder.
π― Option 3: 3824.99.29.00 (High Tariff: 41.5%)
Category: Other Chemical Products & Preparations
| Item | Detail |
|---|---|
| Base Duty | 6.5% |
| Section 301 (Add-on) | +25.0% |
| IEEPA (122 Clause) | +10.0% |
| Total Tariff | 41.5% |
| Calculation | CIF Value Γ 41.5% |
| Logic | "Catch-all" chemical category. No specific "foundry binder" label applied. |
π Interpretation:
- This is the worst-case scenario for general chemical imports.
- Avoid unless the product cannot be classified under 3824.99.36 (specific binder mix) or 3815 (catalyst).
π― Option 4: 3815.90.10.00 (High Tariff: 41.5%)
Category: Other Catalysts (Vanadium-Based)
| Item | Detail |
|---|---|
| Base Duty | 6.5% |
| Section 301 (Add-on) | +25.0% |
| IEEPA (122 Clause) | +10.0% |
| Total Tariff | 41.5% |
| Calculation | CIF Value Γ 41.5% |
| Logic | Specific catalyst sub-heading where Vanadium is the primary active material. |
π Interpretation:
- Similar tax burden to Option 3.
- Requires strong technical documentation proving it is a catalyst and not just a hardening agent.
π οΈ 4. Customs Clearance Strategy (Practical Tips)
β 1. Preparation Checklist (Mandatory)
| Document | Requirement | Purpose |
|---|---|---|
| Technical Data Sheet (TDS) | βοΈ Must Provide | Must explicitly state: "Vanadium-based curing agent for silica sand molding" or "Catalyst for COβ silicate process." |
| Formula/Composition | βοΈ Must Provide | Percentage of Vanadium compounds vs. other binders/inorganics. Proves it's a "mixture" (3824) vs. pure substance. |
| Product Photos | βοΈ Must Provide | Show packaging, label, and physical state (liquid/powder). |
| Safety Data Sheet (SDS) | βοΈ Must Provide | Required for hazardous chemical clearance. Ensure HS Code in SDS matches declaration. |
| Commercial Invoice | βοΈ Must Provide | Description must match the chosen HS Code logic (e.g., "Foundry Binder" vs. "Industrial Catalyst"). |
| Certificate of Origin | βοΈ Must Provide | Essential for applying Section 301 tariffs. |
β 2. Declaration Tactics (Key Keywords)
π₯ "Binders Get Lower Rates than Catalysts!"
| Scenario | Recommended HS Code | Why? |
|---|---|---|
| Product is sold as "Mold Hardener" | 3824.99.36.00 |
Fits "Prepared Binders for Foundry Molds." Lowest total duty (24%). |
| Product is sold as "Catalyst" | 3815.19.00.00 |
Fits "Catalysts." Higher duty (35%) due to 0% base + 25% add-on. |
| Unclear Use | AVOID 3824.99.29.00 |
"Other Chemical Products" has high base duty + high add-ons. |
β οΈ Warning:
- Do NOT declare as "Vanadium Chemicals" generally. Be specific about the application (Foundry Sand Curing).
- If the product is a liquid solution of vanadium salts used to cure sodium silicate sand, 3824.99.36.00 is the strongest argument.
β 3. Special Handling & Pitfalls
| Issue | Solution |
|---|---|
| Hazardous Chemicals | Vanadium compounds may be classified as toxic or environmentally hazardous. Ensure SDS is accurate to avoid detention. |
| Mixed Shipments | If shipping with other foundry chemicals, declare separately. Do not mix "Catalysts" and "Binders" in one line item if HS codes differ. |
| USITC Footnotes | Check for any new exclusions for "Foundry Chemicals" in 2026. Some chemical subclasses may have temporary exclusions from Section 301. |
π 5. Global Comparison (Quick View)
| Market | Recommended HS Code | Est. Total Duty (China Origin) | Notes |
|---|---|---|---|
| πΊπΈ USA | 3824.99.36.00 |
24.0% | Best option if classified as Foundry Binder. |
| πͺπΊ EU | 3824.99.80 |
~6.5% | No Section 301/IEEPA. Lower base duty. |
| π¨π³ China | 3824.99.99 |
~6.5% | Import duty into China is low. VAT 13% applies. |
π Conclusion:
- The US market is the most expensive due to layered tariffs (Base + 301 + IEEPA).
- Strategy: Aim for 3824.99.36.00 by emphasizing the "Foundry Binder" aspect in all documentation. Avoid "Catalyst" language unless necessary, as it triggers higher add-ons.
π 6. Common Mistakes & Avoidance
β Mistake 1: Declaring as "Vanadium Alloy"
π Result: Wrong HS Code (72-81), high duty, legal violation.
β
Fix: It is a Chemical Preparation, not a metal alloy.
β Mistake 2: Ignoring the "122 Clause" (IEEPA)
π Result: Underpayment by 10%.
β
Fix: Always include 10% IEEPA in cost calculations for China-origin chemicals.
β Mistake 3: Vague Description ("Chemical Mix")
π Result: Customs audit, delay, potential reclassification to higher duty (41.5%).
β
Fix: Use precise language: "Vanadium-based Curing Agent for Silica Sand Molds, Foundry Use."
π― 7. Final Recommendation
π Best Path to Save Money:
1. Document the product as a "Prepared Foundry Binder" (not just a catalyst).
2. Declare under HS Code3824.99.36.00.
3. Calculate total landed cost with 24% duty.
4. Verify SDS and TDS match this description perfectly.πΌ Pro Tip:
If your volume is high, consider applying for a Binding Ruling from US Customs (CBP) to lock in the3824.99.36.00classification and avoid future disputes.
β¨ Precise Classification = Lower Costs + Faster Clearance
πΌ Don't let Vanadium Vanish into High Duties!
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) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β 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 β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β 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.