CZ132 / CW602N - DZR Brass
The CW602N / CZ132 dezincification resistant brass (DZR Brass) is essentially a leaded arsenical brass with a duplex structure. As its name suggests it was originally developed to provide good resistance to dezincification type corrosion which is experienced by normal hot working brasses.
As well as the improved dezincification / corrosion resistance the CW602N / CZ132 also offers good strength levels, is readily machined and easily hot forged. Its primary usage over the years has been for water fittings that are produced by hot stamping and machining.
Related Specifications
|
CZ132 |
CW602N |
|
CuZn36Pb2As |
C35330 |
Chemical Composition
|
Copper |
Rem |
|
Lead |
1.7-2.8% |
|
Arsenic |
0.08-0.15% |
|
Zinc |
35.0-37.0% |
|
Tin |
0.2% max |
|
Iron |
0.2% max |
|
Total Impurities |
0.5% max |
Key Features
- Excellent resistance to dezincification
- Good strength and ductility
- High general corrosion resistance
- Ability to be machined and formed
Mechanical Properties (specification minima 18-40mm dia)
|
UTS |
350 N/mm2 |
|
Proof Strength |
- |
|
Elongation |
22% |
Typical Physical Properties
|
Melting Point |
910°C |
|
Density |
8.43 g/cm³ |
|
Specific Heat |
377 |
|
Thermal conductivity (20°C) |
117 W/m°K |
|
Thermal expansion coefficient (20-200°C) |
20.7 x 10-6 per °C |
|
Electrical conductivity |
26 % IACS |
|
Electrical Resistivity |
0.066 ohm mm2/m |
|
Modulus of Elasticity |
106 KN/mm2 |
Fabrication Properties
|
Hot Working Temperature Range |
800-850°C |
|
Hot Formability |
Very good |
|
Cold Formability |
Good |
|
Machinability rating (free cutting brass = 100) |
75 % |
|
Annealing Temp. Range |
450-650°C |
|
Stress Relieving Temp. Range |
250-350°C |
Joining Methods
|
Soldering |
Excellent |
|
Brazing |
Good |
|
Oxy-acetylene welding |
Not recommended |
|
Gas-shielded arc welding |
Not recommended |
|
Resistance welding |
Not recommended |
Typical Uses:
DZR Brass is typically used for hot formed and machined parts for water fittings and other fluid handling systems where mildly acidic or alkali solutions may be found, this utilises the materials de-zincification resistance.
This technical information is given by John Hood & Co.without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.