Brass Product Guide

Brass is an excellent metal for cold working and is easily shaped. It is rust proof, corrosion resistant, and polishes to a rich golden color. Brass is easily soldered and brazed and accepts plating readily. The typical composition is 70% copper and 30% zinc. Increasing zinc content increases strength and ductility, while also producing a more “golden” color variation. Generally known for several things – decent strength, free machining, forming, electrical conductivity and it can be polished easily.

230 Brass (Red Brass)

As the name would imply, this material is reddish in color. It is one of the stronger brass items that we carry.

C230 Red Brass
Minimum PropertiesUltimate Tensile Strength, psi40,000
Yield Strength, psi18,000
Rockwell HardnessB77
ChemistryCopper (Cu)84 - 86%
Zinc (Zn)15%
Iron (Fe)0.05% min
Lead (Pb)0.06% min

260 Brass (Cartridge Brass)

C260 has a high zinc content (normally 70% copper and 30% zinc) giving it the optimum combination of strength and ductility while maintaining the high formability of copper. It has excellent cold workability and is used extensively in the automotive industry, also in the manufacturing of plumbing, hardware, and ammunition components.

C260 Cartridge Brass
Minimum PropertiesUltimate Tensile Strength, psi62,000
Yield Strength, psi52,200
Rockwell HardnessB77
ChemistryCopper (Cu)68.5 - 71.5
Zinc (Zn)28.5 - 31.5%
Iron (Fe)0.05% max
Lead (Pb)0.07% max

330 Brass

C330 is primarily used for tubing and has a low lead content. C330 brass combines good machinability with excellent cold workability. It is fabricated by forming, bending, machining, piercing and punching.

C330 Brass
Minimum PropertiesUltimate Tensile Strength, psi65,300
Yield Strength, psi50,000
Rockwell HardnessB70
ChemistryCopper (Cu)65 - 68%
Zinc (Zn33.5%
Iron (Fe)0.07% max
Lead (Pb)0.2 - 0.8%

360 Brass (Free Machining Brass)

Is ideally suited for high-speed machining operations with its superior machinability, thread rolling and knurling characteristics. Its machinability rating of 100 is the standard against which all other copper alloys are rated It is easily soldered or brazed and has good resistance to corrosion. Typical applications include gears, pinions, plumbing ware fittings, valves, and screw machine products. Conforms to ASTM specification B16

C360 Free Machining Brass
Minimum PropertiesUltimate Tensile Strength, psi58,000
Yield Strength, psi45,000
Rockwell HardnessB78
ChemistryCopper (Cu)60 - 63%
Zinc (Zn)35.5%
Iron (Fe)0.35% max
Lead (Pb)2.5 - 3.7%

Alcobra Metals states that all technical data is for comparison purposes only and is NOT FOR DESIGN. It has been compiled from sources we believe to be accurate but cannot guarantee. Please consult an Engineer.

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