CW719R naval brass pipe and hollow bar consist of CuZn39Sn1, which is the European standard for naval brass. The material contains 59 to 61 percent of copper, 0.5 to 1 percent of tin, and zinc as the balance, and the maximum amount of lead content is 0.2 percent. Due to its improved corrosion resistance in sea water compared to regular 60/40 brass, it has excellent hot forgeability, making it ideal for use in valve bodies, marine fittings, and condenser end plates. CW719R hollow bar and tube are available from Amardeep Steel with EN 10204 certification. The US version is C46400 naval brass pipe.
Technical Data
Specifications of CW719R Naval Brass Pipe
| Parameter | Specification |
|---|---|
|
Material |
CuZn39Sn1, material number CW719R (naval brass) |
|
Standards |
EN 12165 forging stock; EN 12163 / EN 12168 rod; tube made to drawing |
|
Forms |
Hollow rod, extruded tube, forging stock, pipe to drawing |
|
Outside Diameter |
30 mm to 120 mm |
|
Inside Diameter |
20 mm to 80 mm |
|
Length |
Up to 4 m, or cut to length |
|
Condition |
As extruded, half hard or hard |
|
Tests |
Chemical analysis, hardness, dimensional and visual; tensile testing on request |
|
Documents |
EN 10204 3.1 MTR; 3.2 or third party inspection on request |
Chemical Compositions of CW719R Naval Brass Pipe
| Element | CuZn39Sn1, CW719R (%) |
|---|---|
|
Copper (Cu) |
59.0 to 61.0 |
|
Tin (Sn) |
0.5 to 1.0 |
|
Lead (Pb), max |
0.2 |
|
Nickel (Ni), max |
0.2 |
|
Iron (Fe), max |
0.1 |
|
Other Impurities, total max |
0.2 |
|
Zinc (Zn) |
Remainder |
Physical Properties of CW719R Naval Brass Pipe
| Physical Property | Value |
|---|---|
|
Density |
8.4 g/cm³ |
|
Melting Range |
885 to 900°C |
|
Thermal Conductivity |
116 W/m·K |
|
Electrical Conductivity |
26% IACS |
|
Machinability Rating |
30 (Free cutting brass C36000 = 100) |
|
Soldering and Brazing |
Excellent |
Equivalent Grades of CW719R Naval Brass Pipe
| Standard | Designation |
|---|---|
|
EN |
CuZn39Sn1, CW719R |
|
UNS / ASTM |
C46400 (see ourC46400 naval brass pipe page) |
|
ISO |
CuZn38Sn1 |
|
DIN (Former) |
CuZn38Sn1, 2.0530 |
|
JIS |
C4640 |
|
BS (Former) |
CZ112 |
Applications and Industrial Uses of CW719R Naval Brass Pipe
- Marine Valve Bodies
- Shipbuilding Pipe Fittings
- Seawater Piping Systems
- Marine Condenser End Plates
- Heat Exchanger Components
- Forged Marine Connectors
- Seawater Pump Components
- Offshore Marine Equipment Fittings
Frequently Asked Questions
1. What is CW719R Naval Brass Pipe?
CW719R is a copper-zinc-tin alloy (CuZn39Sn1) known for its strength and corrosion resistance in marine environments.
2. What is the US equivalent of CW719R?
UNS C46400 naval brass is the nearest US equivalent to CW719R, although C46400 allows copper content up to 62%.
3. Is CW719R Naval Brass resistant to seawater corrosion?
Yes, CW719R offers good resistance to seawater corrosion and dezincification due to its tin content.
4. What is the difference between CW719R and CW714R?
CW719R contains a maximum of 0.2% lead, while CW714R contains approximately 0.4–1.0% lead for improved machinability.
5. Is CW719R suitable for marine applications?
Yes, CW719R is used in marine valves, seawater piping components, heat exchangers, and shipbuilding equipment.
6. Is CW719R the same as CuZn37Pb1Sn1?
No. CuZn37Pb1Sn1 is CW714R, a leaded naval brass containing approximately 0.4–1.0% lead.
7. Can CW719R Naval Brass be hot forged?
Yes, CW719R has good hot-working properties and is suitable for manufacturing forged marine fittings and valve components.
8. Which EN standard covers CW719R?
EN 12165 covers copper and copper alloy forging stock. The applicable rod or hollow rod standard should be confirmed based on the ordered product form.
Request a Quote for CW719R Naval Brass Pipe
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