Yellow Brasses are copper alloys, containing 5-41% of zinc (Zn) as the major alloying element. Wrought brasses (Gilding, Red Brass, Low Brass,Cartridge Brass, Yellow Brass, Muntz Metal) are designated with the numbers from C20500 through C28580.
Leaded brasses contain 12-41% of zinc (Zn) as the major alloying element and up to 3% of lead (Pb) as additional alloying element. Wrought leaded brasses (Free-Cutting Brass, Medium Leaded Brass, Forging Brass) are designated with the numbers from C31200 through C38590.
Tin brasses contain 5-41% of zinc (Zn) as the major alloying element and up to 3% of tin (Sn) and up to 2% of lead (Pb) as additional alloying elements. Wrought tin brasses (Admiralty Brass, Naval Brass) are designated with the numbers from C40400 through C49080.
Brasses containing up to 35% of zinc have mono-phase structure (α-phase).
These alloys are very ductile and possess very good formability in both cold and hot state.
Brasses containing 35-45% of zinc have binary phase structure (mixture of α- phase and β-phase).
These alloys are less ductile and they have good formability only in hot state and poor formability in cold state.
Wrought brasses are used in architectural and decorative applications, for manufacturing automotive radiators and tanks, screw parts, heat exchangers tubes, marine hardware.
|UNS Designation||Trade mark||Zn,%||Pb,%||Sn,%||Fe,%||Cu, %|
|C24000||Low Brass||Balance.||0.05 max.||-||0.05 max.||78.5-81.5|
|C26000||Cartridge Brass||Balance.||0.07 max.||-||0.05 max.||68.5-71.5|
|C27000||Yellow Brass||Balance.||0.10 max.||-||0.07 max.||63.0-68.5|
|C28000||Muntz Metal||Balance.||0.30 max.||-||0.07 max.||59.0-63.0|
|C35000||Medium Leaded Brass||Balance.||0.8-2.0||-||0.15 max.||60.0-63.0|
|C36000||Free-Cutting Brass||Balance.||2.5-3.7||-||0.35 max.||60.0-63.0|
|C43500||Tin Brass||Balance.||0.10 max.||0.6-1.2||0.05 max.||79.0-83.0|
|C46400||Naval Brass||Balance.||0.20 max.||0.5-1.0||0.10 max.||59.0-62.0|