Found 14 matching results
(CN → US)
| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8007003200 | Doc | 32.8% | CN | US | 2025-05-12 |
| 8007005000 | Doc | 57.8% | CN | US | 2025-05-12 |
| 8001100000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8001200010 | Doc | 55.0% | CN | US | 2025-05-12 |
| 3214905000 | Doc | 58.25% | CN | US | 2025-05-12 |
| 3214901000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 3207100000 | Doc | 58.1% | CN | US | 2025-05-12 |
| 3207405000 | Doc | 61.5% | CN | US | 2025-05-12 |
| 3606908000 | Doc | 42.5% | CN | US | 2025-05-12 |
| 3606903000 | Doc | 35.9% | CN | US | 2025-05-12 |
| 8505110090 | Doc | 32.1% | CN | US | 2025-05-12 |
| 8505193000 | Doc | 59.9% | CN | US | 2025-05-12 |
| 3901909000 | Doc | 61.5% | CN | US | 2025-05-12 |
| 3901905501 | Doc | 61.5% | CN | US | 2025-05-12 |
Magnetic Paste
Magnetic paste refers to a substance containing ferromagnetic particles embedded in a carrier medium, typically a binder or polymer. These pastes exhibit magnetic properties and are utilized in a diverse range of applications due to their unique characteristics.
Material Composition
The core components of magnetic paste include:
- Ferromagnetic Particles: These provide the magnetic properties. Common materials include:
- Iron Oxide (Fe3O4): Most frequently used due to cost-effectiveness and good magnetic characteristics. Variations include magnetite, hematite, and wüstite.
- Nickel: Offers higher saturation magnetization and corrosion resistance but is more expensive.
- Cobalt: Provides even stronger magnetic properties and better high-frequency performance but is the most costly option.
- Alloy Particles: Combinations like iron-cobalt alloys are used for specific performance requirements.
- Carrier Medium (Binder): This suspends the particles and provides mechanical properties. Common options include:
- Epoxy Resins: Provide strong adhesion and chemical resistance.
- Polyurethane: Offers flexibility and good abrasion resistance.
- Acrylic Polymers: Known for UV resistance and clarity.
- Silicone Polymers: Provide high-temperature stability and flexibility.
- Water-based Carriers: Used for environmentally friendly applications.
- Additives: These are incorporated to modify properties like viscosity, thixotropy, surface tension, and stability. Examples include dispersants, surfactants, and stabilizers.
Purpose and Function
The primary purpose of magnetic paste is to provide a controllable magnetic field or magnetic functionality to a surface or component. Key functions include:
- Magnetic Shielding: Absorbing and redirecting magnetic flux to protect sensitive components.
- Magnetic Adhesion: Providing a temporary or permanent bond between materials.
- Sealing: Creating a magnetic seal to prevent leakage.
- Damping: Reducing vibration and noise through magnetic forces.
- Positioning and Actuation: Controlling the position or movement of components using magnetic fields.
- Sensor Applications: Used in magnetic sensors and read heads.
Usage Scenarios
Magnetic pastes find applications in various industries:
- Electronics: Shielding electronic components, read/write heads for hard drives and magnetic storage devices, magnetic sensors.
- Automotive: Vibration damping in engine mounts, suspension systems, and speakers, sealing applications.
- Aerospace: Damping in aircraft structures, magnetic actuators for control surfaces.
- Industrial Machinery: Magnetic couplings, magnetic brakes, vibration isolation.
- Medical Devices: MRI compatible components, targeted drug delivery systems.
- Consumer Products: Speakers, headphones, magnetic closures, toys.
- Art and Design: Creating magnetic sculptures and displays.
Common Types
Magnetic pastes are categorized based on their composition and properties:
- Iron Oxide Paste: Most common type, cost-effective for general shielding and adhesion applications.
- Nickel Paste: Used when higher magnetic strength and corrosion resistance are required.
- Cobalt Paste: Employed in high-performance applications demanding strong magnetic fields.
- Anisotropic Magnetic Paste: Particles are aligned to provide a preferred direction of magnetization, resulting in stronger magnetic properties in a specific direction.
- Isotropic Magnetic Paste: Particles are randomly oriented, providing uniform magnetic properties in all directions.
- Water-Based Magnetic Paste: Environmentally friendly option, often used in coatings and inks.
- High-Permeability Magnetic Paste: Designed to maximize the concentration of magnetic flux, used for effective shielding.
- Conductive Magnetic Paste: Combines magnetic properties with electrical conductivity, used in electromagnetic interference (EMI) shielding.
Based on the provided information, “magnetic paste” can be classified under several HS codes, depending on its composition and specific application. Here's a breakdown of potential classifications:
- 3606908000: Ferrocerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in note 2 to this chapter: Other: Other. This code applies to various pyrophoric alloys, and if the “magnetic paste” contains such alloys, it could fall under this classification. The total tax rate is 42.5% (5.0% basic tariff + 7.5% additional tariff, with an additional 30.0% after April 2, 2025).
- 3606903000: Ferrocerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in note 2 to this chapter: Other: Ferrocerium and other pyrophoric alloys. If the paste is primarily composed of ferrocerium alloys, this HS code is applicable. The total tax rate is 35.9% (5.9% basic tariff + 0.0% additional tariff, with an additional 30.0% after April 2, 2025).
- 8505110090: Electromagnets; permanent magnets and articles intended to become permanent magnets after magnetization; electromagnetic or permanent magnet chucks, clamps and similar holding devices; electromagnetic couplings, clutches and brakes; electromagnetic lifting heads; parts thereof: Permanent magnets and articles intended to become permanent magnets after magnetization: Of metal Other. This code is relevant if the paste is used to create permanent magnets and contains metal components. The total tax rate is 32.1% (2.1% basic tariff + 0.0% additional tariff, with an additional 30.0% after April 2, 2025).
- 8505193000: Electromagnets; permanent magnets and articles intended to become permanent magnets after magnetization; electromagnetic or permanent magnet chucks, clamps and similar holding devices; electromagnetic couplings, clutches and brakes; electromagnetic lifting heads; parts thereof: Permanent magnets and articles intended to become permanent magnets after magnetization: Other: Other. If the paste is used to create permanent magnets but doesn't fall under the "Of metal Other" category, this HS code may be applicable. The total tax rate is 59.9% (4.9% basic tariff + 25.0% additional tariff, with an additional 30.0% after April 2, 2025).
Important Note: The classification of “magnetic paste” heavily depends on its composition. If the paste contains ferrocerium alloys, codes 3606903000 or 3606908000 are relevant. If it's used for creating magnets, codes 8505110090 or 8505193000 apply.
According to the provided reference material, the HS code options related to 'magnetic paste' are limited, with only the following 4 found.