CZ115 / CW722R Extruded High Tensile Brass (Restricted Al), CZ115 (CW722R) Brass Alloy, Extrudtion brass, excellent strength Brass extrusions, CuZn40Mn1Pb1FeSn brass roll coil sheet, Yellow Brass China Factory
CZ115 / CW722R Extruded High Tensile Brass (Restricted Al) consists of of a duplex structure and is a high tensile brass with a restricted aluminium content, enabling it to be soldered and brazed. Similar in composition to the CW721 / CZ114 (aluminium content aside) this grade it was developed to allow high strength brass components to be joined. Sometimes referred to as a manganese bronze the CW722R / CZ115 has additions of iron, tin and manganese that benefit the physical and mechanical attributes of the alloy.
Extruded Brass is a light brass. This color is a polyester top coat powder coat and has a semi-gloss finish. Top Coat Information: Top coat powder coating colors and clear metallics are transparent. The color of the substrate (surface) under a top coat will affect the finished appearance.
The tin and iron additions impart higher strength levels, while the tin also improves the corrosion resistance. The CW722R / CW115 also offers good fabrication properties with a very good machinability rating, ease of hot forging and the ability to lend itself to finish plating.
Related Specifications
CZ115 |
CuZn40Mn1Pb1FeSn |
CW722R |
|
Chemical Composition
Copper |
56.5-58.5% |
Tin |
0.2-0.8% |
Lead |
0.5-1.5% |
Iron |
0.3-1.0% |
Aluminium |
0.1% max |
Manganese |
0.5-2.0% |
Zinc |
Rem |
Others |
0.5% max |
Mechanical Properties (Specification minima 18-80mm)
Tensile Strength |
440N/mm2 |
0.2% Proof Strength
|
210N/mm2 |
Elongation √5.65
|
15% |
Key Features
- Enhanced Strength Levels
- Good corrosion resistance
- Suitable for brazing and soldering
- Excellent hot forming properties
- Very Good machinability rating
- Non-sparking
Typical Physical Properties
Melting Point |
940°C |
Density |
8.42 g/cm³ |
Specific Heat |
380 J/Kg°K |
Thermal conductivity (RT) |
88 W/m°K |
Thermal expansion coefficient (20-200°C) |
20 x 10-6 |
Electrical conductivity |
18% IACS |
Electrical Resistivity |
0.082 ohm mm2/m |
Fabrication Properties
Hot Working Temperature Range |
700-750°C |
Hot Formability |
Very Good |
Cold Formability |
Poor |
Machinability rating
(free cutting brass = 100) |
75% |
Annealing Temp. Range |
425-600°C |
Stress Relieving Temp. Range |
225-350°C |
Joining Methods
Soldering |
Very Good |
Brazing |
Very Good |
Oxy-acetylene welding |
Not Recommended |
Gas-shielded arc welding |
Not Recommended |
Resistance welding: Spot and Seam |
Not Recommended |
Butt |
Fair |
Typical Uses:
Due to the enhanced mechanical properties and joining properties of CW722R / CZ115 it is utilised in gas valves and fittings, fasteners, pump trim, gears, locks, heavy-duty electrical connectors, transmission components, marine hardware, safety tools and decorative metalwork. CZ114 / CW721R High Tensile Brass Extruded
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