Copper; copper-zinc base alloys (brass) unwrought

HS v2022 Code: 740321

About copper; copper-zinc base alloys (brass) unwrought

HS code 740321 covers the trade of unwrought copper and copper-zinc base alloys, commonly known as brass. This industry plays a crucial role in the global economy, providing essential raw materials for a wide range of manufacturing and construction applications. Copper and brass are highly versatile materials, valued for their conductivity, corrosion resistance, and aesthetic properties, making them indispensable in sectors such as electronics, plumbing, and decorative arts.

Production process

The production of unwrought copper and copper-zinc alloys typically involves a multi-step process. First, copper ore is extracted from mines and then smelted to produce pure copper. For brass, the copper is then alloyed with zinc in specific proportions to achieve the desired properties. The molten alloy is then cast into ingots, billets, or other intermediate forms, which can be further processed through techniques like rolling, extrusion, or drawing to create the final unwrought products.

Production inputs

The main inputs required for the production of unwrought copper and copper-zinc alloys include copper ore, zinc, and various energy sources to power the smelting and alloying processes. Additionally, specialized equipment such as furnaces, casting molds, and rolling mills are essential for the manufacturing of these materials. The industry also relies on a skilled workforce with expertise in metallurgy and metal processing.

Production outputs

The primary outputs of HS code 740321 are unwrought copper and copper-zinc alloys, which are then consumed by a wide range of downstream industries. These materials are used in the production of 740400 Copper; waste and scrap, 740710 Copper; bars, rods and profiles, 740811 Copper; wire, and 741010 Copper; foil, among other products. The versatility of copper and brass makes them indispensable in sectors such as construction, electronics, transportation, and industrial machinery.

Revisions to 740321

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 740321. The most recent 1 version of this code (740321) is in the HS v2022 system (this version):

This page shows the most recent version of code 740321.

Family tree for copper; copper-zinc base alloys (brass) unwrought

    graph LR
    A["<a href='/classifications/hs/v2022/74'>74: Copper and articles thereof</a>"]
A --> B["<a href='/classifications/hs/v2022/7403'>7403: Copper; refined and copper alloys, unwrought</a>"]
B --> C["<a href='/classifications/hs/v2022/740321'>740321: Copper; copper-zinc base alloys (brass) unwrought</a>"]

    B --> D["<a href='/classifications/hs/v2022/740311'>740311: Copper; refined, unwrought, cathodes and sections of cathodes</a>"]
B --> E["<a href='/classifications/hs/v2022/740312'>740312: Copper; refined, unwrought, wire-bars</a>"]
B --> F["<a href='/classifications/hs/v2022/740313'>740313: Copper; refined, unwrought, billets</a>"]
B --> G["<a href='/classifications/hs/v2022/740319'>740319: Copper; refined, unwrought, n.e.c. in item no. 7403.1</a>"]
B --> H["<a href='/classifications/hs/v2022/740322'>740322: Copper; copper-tin base alloys (bronze) unwrought</a>"]
B --> I["<a href='/classifications/hs/v2022/740329'>740329: Copper; copper alloys n.e.c. in heading no. 7403 (other than master alloys of heading no. 7405)</a>"]

    

    %% Color coordination by level

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    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6
class I level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight