CW602N DZR brass hollow bar is a stock material of leaded arsenical brass for precision-machined and hot-stamped parts that need to be protected from dezincification. CuZn36Pb2As is the EN chemical name for CW602N and CZ132 is the BS legacy name for CW602N. It contains 61.0 to 63.0% copper, 1.7 to 2.8% lead, and 0.02 to 0.15% arsenic. The dezincification resistance is provided by the addition of arsenic and the controlled heat treatment, and can be tested on request according to ISO 6509-1. This alloy comes in extruded or bored hollow bar, and is used in the manufacture of valves, plumbing fittings and industrial fluid handling parts. CW602N Hollow bars are supplied by USA Piping Solution to your size and industry requirements.
Specifications of Cw602n Dzr Brass Hollow Bars
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Specification Parameter |
Commercial & Technical Details |
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Product Name & Alloy Class |
CW602N DZR Brass Hollow Bars / Leaded Arsenical Dezincification-Resistant Brass |
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Material Designations |
CW602N (EN Numeric) | CuZn36Pb2As (EN Chemical) | CZ132 (BS Legacy) | UNS C35330 (Approximate) |
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Governing Standards |
EN 12168 (Hollow rod for free machining) EN 12164 (Solid rod composition baseline) EN 12449 (Seamless tubes for profiles >80mm OD or wall <2mm) |
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Corrosion Standard & Testing |
Dezincification resistance tested to ISO 6509-1 on request (1% copper chloride solution, 75 °C, 24 hours) |
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Lead Classification & Compliance |
Leaded alloy containing 1.7%–2.8% Pb (Not lead-free; requires finished-part NSF/ANSI 61/372 certification for US potable water use) |
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Manufacturing Methods & Forms |
Hot Extrusion, Cold Drawing, or Precision Gun-Drilled / Bored Bar Stock; available in round and hexagonal profiles |
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Dimensional Scope & Supply |
Outside Diameter (OD): 30 mm to 120 mm Inside Diameter (Bore): 20 mm to 80 mm (Supplied in random 3 m–4 m mill lengths or cut billets) |
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Quality & Documentation |
EN 10204 3.1 Material Test Certificate (MTC), Spectrographic Analysis, ISO 6509-1 Corrosion Report, Heat Traceability |
Applications and Industrial Uses of Cw602n Dzr Brass Hollow Bars
- Plumbing Fittings and Connectors
- Water Meter Components
- Valve Bodies and Components
- Sanitary Tapware Fittings
- Water Distribution System Components
- Pump Components
- Hydraulic Fittings and Connectors
- Precision-Machined Brass Components
Frequently Asked Questions
1. What are CW602N DZR brass hollow bars?
CW602N DZR brass hollow bars are leaded arsenical brass stock used for machined and hot-stamped components requiring resistance to dezincification.
2. Is CW602N the same as CZ132 and CuZn36Pb2As?
Yes. CW602N is the European grade designation, CZ132 is the legacy British designation, and CuZn36Pb2As is the chemical designation for this alloy.
3. What makes CW602N brass resistant to dezincification?
Its controlled arsenic content and appropriate heat treatment help prevent selective zinc loss, improving resistance to dezincification.
4. Which standards cover CW602N brass hollow bars?
EN 12168 covers applicable free-machining hollow bar products. EN 12449 may apply to certain other dimensions and product forms, depending on the specification.
5. Is CW602N brass suitable for drinking-water applications?
Not automatically. Suitability depends on local regulations, finished-component testing, and the required drinking-water certifications.
6. Is CW602N brass lead-free?
No. CW602N contains approximately 1.7% to 2.8% lead, so it is a leaded brass alloy, not a lead-free material.