CZ106 / CW505L / Cartridge Brass

The CW505L / CZ106 is an alpha brass sometimes referred to as cartridge brass, with an approximate zinc content of 30% with the balance of the composition being copper.

CW505L / CZ106 exhibits an excellent combination of strength and ductility for the alpha phase brasses. This grade is used for its outstanding deep drawing properties and excellent cold workability.

Related Specifications

CW505LCZ106
C26000CuZn30

Chemical Composition

Copper68.5-71.5%
Lead0.05% max
Iron0.05% max
ZincRem
Others           0.30% max

Key Features

  • Superb cold forming properties
  • Excellent deep drawing characteristics
  • Good corrosion resistance
  • Optimum combination of strength and ductility for alpha brasses
CZ106 CW505L Cartridge Brass

CZ106 CW505L Cartridge Brass

Typical Physical Properties

Melting Point965°C
Density8.55 g/cm³
Specific Heat380 J/Kg°K
Thermal conductivity (RT)121 W/m°K
Thermal expansion coefficient (20-200°C)19 x 10-6 / °C
Electrical conductivity28 % IACS
Electrical Resistivity0.062 ohm mm2/m

Fabrication Properties

Hot Working Temperature Range750-870°C
Hot FormabilityFair
Cold FormabilityExcellent
Cold Reduction Between Anneals90%
Machinability rating

(free cutting brass = 100)

30 %
Annealing Temp. Range450-680°C
Stress Relieving Temp. Range250-350°C

Joining Methods

SolderingExcellent
BrazingExcellent
Oxy-acetylene weldingGood
Gas-shielded arc weldingFair
Resistance welding:   Spot and SeamFair
                              ButtGood

Typical Uses:

The CW501L / CZ106 is used for a variety of components including lamp caps and lamp-holder components, heat exchanger tubes handling fresh clean water, chains, eyelets, fastenings, hinges, locks, fingerplates, fire extinguisher bodies, sugar evaporators and juice heaters in chemical processing and a wide variety of deep drawn or spun components and general industrial pressings.

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