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Yellow Brass Copper Alloy - CDA 272/274

Yellow Brass Copper Alloy (CDA 272/274) is a copper alloy primarily composed of around 63-65% copper and 35-37% zinc. It is known for its golden-yellow color, excellent corrosion resistance, and good machinability. 

These alloys are versatile, offering a balance of strength, ductility, and formability, making them suitable for a wide range of applications. CDA 272/274 is often used in both industrial and decorative products.

Chemical Composition

Element

Composition (%)

Copper (Cu)

61.0 - 65.0

Zinc (Zn)

Rem.

Lead (Pb)

Max. 0.09

Iron (Fe)

Max. 0.07

 

Physical Properties

Property

Value

Melting Point (Liquidus)

 1680°F
Density 0.305 lb/cu in at 68°F
Specific Gravity 8.44
Electrical Conductivity 27.6% IACS at 68°F
Thermal Conductivity 67 Btu/sq ft/ft hr/°F at 68°F

Mechanical Properties

Property

Value

Tensile Strength

74 ksi
Yield Strength 55 ksi
Elongation 10%

Thermal Properties

Property

Value
Melting Point  1680°F
Thermal Conductivity 67 Btu/sq ft/ft hr/°F at 68°F
Specific Heat Capacity 0.09 Btu/lb/°F at 68°F
Coefficient of Thermal Expansion 11.4 × 10^-6 per °F

Fabrication Properties

Property

Characteristic
Cold Working Good
Hot Working Fair
Machinability Good
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair

Common Applications

Common applications of Yellow Brass Copper Alloy (CDA 272/274) include:

  • Plumbing fixtures and fittings
  • Decorative architectural hardware
  • Electrical connectors and terminals
  • Heat exchanger tubes
  • Automotive parts, such as radiators and trim
  • Musical instruments (brass components)
  • Fasteners, screws, and rivets
  • Jewelry and decorative items

How Can Drawn Metal Help

If you have any queries about the metal products that we offer, don’t hesitate to get in touch with us. 

 

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