HSN code 7405 pertains to 'Master alloys of copper' in India. This classification is crucial for businesses involved in the production and trade of specialised copper-based alloys. Master alloys are pre-mixed alloy additions used to efficiently introduce specific elements, such as phosphorus, titanium, or silicon, into base metals like aluminium or other copper alloys during smelting and casting. Accurate classification under HSN 7405 ensures correct customs duties and GST application, streamlining procurement and sales processes for manufacturers, traders, and accountants. Understanding this code is vital for sourcing critical components that enhance the properties of finished metal products. MetaleMart facilitates access to various metal grades, including those related to copper alloys.
What HSN 7405 Covers
HSN 7405 is exclusively for 'Master alloys of copper'. This includes pre-made alloys where copper is the principal element by weight, formulated with other elements specifically to be added to molten metal baths during the manufacturing of other alloys. These are not finished copper articles but intermediate products. Examples include copper-phosphorus alloys used for de-oxidation and grain refinement in aluminium and copper casting, copper-titanium alloys that enhance the strength and creep resistance of aluminium, and copper-silicon alloys that improve castability and mechanical properties in aluminium alloys. This HSN code distinguishes these specialised additive alloys from pure unwrought copper (HSN 7403) or finished copper products like bars, pipes, or sheets (various other HSN codes within Chapter 74). The key is that these are 'master' or 'additive' alloys, not base metals or final components. They are typically supplied in granular, ingot, or shot form, not in mill products.Common Materials & Grades
- Copper-Phosphorus Master Alloy (e.g., CuP15) - Used as a deoxidiser and grain refiner in copper and aluminium alloys.
- Copper-Titanium Master Alloy (e.g., CuTi10) - Enhances strength and creep resistance in aluminium alloys.
- Copper-Silicon Master Alloy (e.g., CuSi3) - Improves corrosion resistance and mechanical properties in aluminium casting alloys.
- Copper-Zirconium Master Alloy - Used for grain refinement in aluminium alloys.
- Copper-Boron Master Alloy - Acts as a neutron absorber in nuclear applications.
Trade Names & Synonyms
- Copper Additive Alloys
- Copper Alloying Additives
- Copper Masterbatch
- Cu-Alloy Master Alloys
- Phosphor Copper Master Alloy
- Titanium Copper Master Alloy
Typical Industrial Uses
- Aluminium Alloy Production (as additive)
- Copper Alloy Manufacturing
- Deoxidising Agent in Foundries
- Grain Refinement in Casting
- Improving Mechanical Properties
- Aerospace Component Manufacturing
- Automotive Part Production
GST Rate (Indicative)
HSN 7405, covering master alloys of copper, typically falls under the 18% GST slab in India. However, this can vary based on the specific alloy composition and its end-use. It is crucial for buyers and sellers to verify the exact GST rate applicable on the CBIC portal before any transaction.
Related HSN Codes
- HSN 7403: Refined copper and copper alloys, unwrought
- HSN 7407: Copper and articles thereof - Bars, rods and profiles
- HSN 7409: Copper and articles thereof - Plates, sheets and strip, of a thickness exceeding 0.15 mm
- HSN 7419: Other articles of copper
Related on MetaleMart
- Parent: HSN 74 — Copper and articles thereof
- HSN 7401 — COPPER MATTES; CEMENT COPPER (PRECIPITATED COPPER)
- HSN 7402 — UNREFINED COPPER; COPPER ANODES FOR ELECTROLYTIC REFINING
- HSN 7403 — REFINED COPPER AND COPPER ALLOYS, UNWROUGHT
- HSN 7404 — COPPER WASTE AND SCRAP
- Browse all HSN codes
- Metal Grades Library
- Shop industrial metals
Frequently Asked Questions about HSN 7405
What are master alloys of copper under HSN 7405 and what is their GST implication?
HSN 7405 covers master alloys of copper, which are used to impart specific properties to other metal alloys. They are crucial in manufacturing industries where precise alloy compositions are needed. Common examples include copper-phosphorus master alloys for deoxidising and de-gassing. GST rates are typically in the 18% slab, but verification with the latest CBIC notifications is advised.
What are the main industrial uses and forms of products classified under HSN 7405?
The primary use of copper master alloys (HSN 7405) is as additive agents in the production of other non-ferrous alloys, especially aluminium alloys. They help improve mechanical properties, castability, and corrosion resistance. Buyers should look for specific formulations like copper-phosphorus or copper-titanium for applications in aerospace, automotive, and electronics industries. Typical GST is 18%.
How does HSN 7405 differentiate from other copper-related HSN codes?
HSN 7405 is specifically for 'Master alloys of copper'. This HSN code is distinct from pure copper (HSN 7403), copper powders (HSN 7405), or other copper articles (Chapter 74). It is essential for accurate customs classification and GST compliance. Buyers should ensure their invoices and declarations precisely state 'master alloys of copper' to align with this code.
Does MetaleMart offer products like bars, sheets, or coils under HSN 7405?
HSN 7405 covers copper master alloys, which are not typically sold in standard shapes like bars, sheets, or pipes. They are usually supplied in granular or ingot form for direct addition to melting processes. MetaleMart, while focusing on standard mill forms, might offer specific master alloy products through its network of specialised suppliers. Buyers should contact MetaleMart for specific sourcing needs related to HSN 7405.