What Is Brass? Composition and Properties

Brass is an alloy made primarily of copper and zinc. The proportions of the copper and zinc are varied to yield many different kinds of brass. Basic modern brass is 67% copper and 33% zinc.1 However, the amount of copper may range from 55% to 95% by weight, with the amount of zinc varying from 5% to 45%.2

Lead is commonly added to brass at a concentration of around 2%. The lead addition improves the machinability of brass. However, significant lead leaching often occurs, even in brass that contains a relatively low overall concentration of lead.

What Is Brass? Composition and Properties

What Is Brass? Composition and Properties

Uses of brass include musical instruments, firearm cartridge casing, radiators, architectural trim, pipes and tubing, screws, and decorative items.

Brass Properties

Brass often has a bright gold appearance, however, it can also be reddish-gold or silvery-white. A higher percentage of copper yields a rosy tone, while more zinc makes the alloy appear silver.
Brass has higher malleability than either bronze or zinc.
Brass has desirable acoustic properties appropriate for use in musical instruments.
The metal exhibits low friction.
Brass is a soft metal that may be used in cases when a low chance of sparking is necessary.
The alloy has a relatively low melting point.
It’s a good conductor of heat.
Brass resists corrosion, including galvanic corrosion from saltwater.
Brass is easy to cast.
Brass is not ferromagnetic. Among other things, this makes it easier to separate from other metals for recycling.

Identifying Brass Composition by Name

Common names for brass alloys may be misleading, so the Unified Numbering System for metals and alloys is the best way to know the composition of the metal and predict its applications. The letter C indicates brass is a copper alloy. The letter is followed by five digits. Wrought brasses — which are suitable for mechanical forming — begin with 1 through 7. Cast brasses, which may be formed from molded molten metal, are indicated using an 8 or 9.

Small Precision Brass Tubes

Small Precision Brass Tubes

Small Precision Brass Tubes, Seamless Oval Brass Piping, Brass Supply Piping, OEM / ODM Copper Capillary Brass Pipes, Brass Oval Shape Tube for Condenser and Heat-exchangers, Wall Thickness Brass Tube, Admiralty Brass Pipes And Tubes China Factory Small Precision Brass Tubes product features Item Brass Tube Brass Pipes Standard GB/T 5231-2012,GB/Y1527-2017, ASTM B43-98,ASTM B88M-99, ASTM B135M-96 […]

Water Desalination Brass Pipe

Water Desalination Brass Pipe

Water Desalination Brass Pipe, Seamless Oval Brass Piping, Brass Water Supply Piping, OEM / ODM Copper Capillary Brass Pipes, Brass Oval Shape Tube for Condenser and Heat-exchangers, Wall Thickness Brass Tube, Admiralty Brass Pipes And Tubes China Factory Water Desalination Brass Pipe product features Item Brass tube Thin Wall Brass Round Pipes Standard GB/T 5231-2012,GB/Y1527-2017, ASTM […]Brass Composition and Properties

Seamless Brass Piping

Seamless Brass Piping

Seamless Brass Piping, Brass Water Supply Piping, Water Evaporators Brass Pipes, OEM / ODM Copper Capillary Brass Pipes, Brass Tube for Condenser and Heat-exchangers, Wall Thickness Brass Tube, Admiralty Brass Pipes And Tubes China Factory Seamless Brass Piping product features Standard ASTM Length 1m-6m Diameter 3mm-165mm Thickness 0.5mm-12mm Transport Package Wooden Case Specification brass Origin […]Brass Composition and Properties

Brass Water Supply Piping

Brass Water Supply Piping

Brass Water Supply Piping, Water Evaporators Brass Pipes, OEM / ODM Copper Capillary Brass Pipes, Brass Tube for Condenser and Heat-exchangers, Wall Thickness Brass Tube, Admiralty Brass Pipes And Tubes China Supplier Brass Water Supply Piping product features Standard ASTM Length 1m-6m Diameter 3mm-165mm Thickness 0.5mm-12mm Transport Package Wooden Case Specification brass Origin Ningbo HS […]Brass Composition and Properties