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Brass Extrusion and Components
Silicon red brass is a specialised copper-zinc-silicon alloy designed for superior strength, corrosion resistance, and durability in demanding applications. Typically containing 80-83% copper, 11.5-16.5% zinc, and 3.5-4.5% silicon, this alloy is solid solution strengthened and belongs to the high-strength brass family. The silicon content provides excellent strength characteristics while maintaining good machinability and spring properties. Silicon red brass demonstrates exceptional resistance to dezincification, making it particularly suitable for underground service lines, valve stems, and applications requiring both high strength and corrosion resistance in potable water and marine environments. The alloy maintains its mechanical properties over time and offers good hot formability and excellent brazing characteristics.
Silicon red brass is a specialised copper-zinc-silicon alloy designed for superior strength, corrosion resistance, and durability in demanding applications. Typically containing 80-83% copper, 11.5-16.5% zinc, and 3.5-4.5% silicon, this alloy is solid solution strengthened and belongs to the high-strength brass family. The silicon content provides excellent strength characteristics while maintaining good machinability and spring properties. Silicon red brass demonstrates exceptional resistance to dezincification, making it particularly suitable for underground service lines, valve stems, and applications requiring both high strength and corrosion resistance in potable water and marine environments. The alloy maintains its mechanical properties over time and offers good hot formability and excellent brazing characteristics.
Equivalent silicon red brass grades with their ISO symbols and international standards are:
Equivalent silicon red brass grades with their ISO symbols and international standards are:
- CuZn21Si3P (ISO)/CuZn20Si3P (ISO), corresponding to UNS C69300 and EN CW724R, with no direct BS, JIS, or IS equivalents noted.
- CuZn16Si4 (ISO), equivalent to UNS C69400 and IS 11109 Grade I, with no EN, BS, or JIS counterparts specified.
- CuZn15Si4As (ISO), matching UNS C69430 and IS 11109 Grade I, with no EN, BS, or JIS equivalents listed.
- CuZn14Si4 (ISO)/CuZn18Si3Pb1 (ISO), corresponding to UNS C69700, with no other standard equivalents noted.
These silicon red brass grades ensure global compatibility for applications requiring high strength combined with excellent corrosion resistance, particularly in water service applications where dezincification resistance is critical. The ISO symbols provide universal reference points for procurement and engineering specifications across different manufacturing regions.
These silicon red brass grades ensure global compatibility for applications requiring high strength combined with excellent corrosion resistance, particularly in water service applications where dezincification resistance is critical. The ISO symbols provide universal reference points for procurement and engineering specifications across different manufacturing regions.
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