C3603/C3604

C3603 and C3604 are free-cutting brass alloys belonging to the C36000 brass family, known for excellent machinability, good strength, and corrosion resistance. Both are widely used in precision machining industries such as electronics, plumbing, automotive, and hardware manufacturing.

C3603 Overview

C3603 is an improved version of traditional 60/40 brass designed for mass production of brass components with maximum output and longest tool life. It is suitable where no further cold forming after machining is needed.

• Copper (Cu): 57.00–61.00%

• Lead (Pb): 1.80–3.70%

• Iron (Fe): Max 0.35%

• Tin + Iron (Sn + Fe): Max 0.60%

• Zinc (Zn): Balance

C3604 Overview

C3604 brass is similarly free machining and commonly used for mechanical and electrical parts like connectors, plugs, sockets, nuts, screws, and bearings. It features:

• Copper (Cu): 57.00–61.00%

• Lead (Pb): 1.80–3.70%

• Iron (Fe): Max 0.50%

• Tin + Iron (Sn + Fe): Max 1.00%

• Zinc (Zn): Balance

Mechanical and Fabrication Properties (Typical)

• High machinability rating with good wear resistance

• Good corrosion resistance

• Tensile strength is roughly 330–450 MPa, depending on temper

• Used in applications requiring high-speed machining, precision parts, excellent finish, and durability