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Bronze Alloy C90300

C90300, also known as Leaded Tin Bronze, is a high-performance bronze alloy consisting of approximately 88 percent copper, 8 to 10 percent tin, and 1 to 3 percent lead. This precise composition creates an alloy well-suited for applications demanding high strength, excellent machinability, and reliable wear resistance.

Key Properties of C90300:

  • High Strength and Toughness C90300 delivers excellent mechanical properties, making it ideal for heavy-duty industrial and marine applications.
  • Superior Corrosion Resistance The high tin content offers strong resistance to seawater corrosion, making this alloy a go-to for saltwater and brine environments.
  • Good Machinability The small addition of lead enhances its machinability without compromising structural integrity.
  • Outstanding Wear Resistance Performs reliably in high-load, low-speed applications where durability over time is essential.
  • Reliable Pressure Tightness C90300 is often used in pressure systems because of its resistance to leakage and deformation under stress.
  • Moderate Friction Characteristics While not as lubricious as some higher-lead bronzes, it still provides adequate anti-friction qualities for many rotating or sliding part assemblies.

Also referred to as CDA 903, C903 Navy G Bronze, or C90300 Tin Bronze, this alloy is known for its durability and resilience under high-load conditions. Its pressure tightness and resistance to corrosion make it a reliable material for castings used in fluid-handling and structural applications.

C90300 is particularly well-suited for:

  • Pump and Valve Components
  • Bearings and Bushings
  • Steam and Water Fittings
  • Marine Hardware
  • Hydraulic Equipment
  • Gear Components

Often used in naval and military applications, C90300 is recognized for its reliability in corrosive environments, especially those involving brine or salt water. Its combination of strength, machinability, and resistance to wear and corrosion makes it a versatile and trusted alloy for mission-critical systems.