Extra High Leaded Brass UNS C35600

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Welding
     Forging
     Hot Working
     Cold Working
     Annealing
Applications

Introduction

Brass is an alloy mainly consisting of copper and zinc. Brass alloys can be easily shaped and are available in various colors. Brass has high thermal conductivity. UNS C35600 extra high leaded brass alloys have free machining properties and good formability.

The following datasheet gives an overview of UNS C35600 brass alloys.

Chemical Composition

The following table shows the chemical composition of UNS C35600 brass alloys.

Element Content (%)
Cu 63
Pb 2.5
Zn 34.5

Physical Properties

The physical properties of UNS C35600 brass alloys are tabulated below.

Properties Metric Imperial
Density 8.50 g/cm3 0.307 lb/in³
Melting point 885°C 1630°F

Mechanical Properties

The mechanical properties of UNS C35600 brass alloys are outlined in the following table.

Properties Metric Imperial
Tensile strength 338 - 510 MPa 49000 - 74000 psi
Yield strength (depending on temper) 117 - 414 MPa 17000 - 60000 psi
Elongation at break (in 177.8 mm) 50% 50%
Elastic modulus 117 GPa 17000 ksi
Poisson's ratio 0.34 0.34
Machinability (UNS C36000 (free-cutting brass) = 100) 100 100
Shear modulus 37 GPa 5370 ksi

Thermal Properties

The thermal properties of UNS C35600 brass alloys are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 20-300°C/ 68-572°F) 20.5 µm/m°C 11.4 µin/in°F
Thermal conductivity (@ 20°C/ 68°F) 115 W/mK 798 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to UNS C35600 brass alloys include:

  • ASTM B121
  • ASTM B453

Fabrication and Heat Treatment

Machinability

The machinability rate of UNS C35600 brass alloys is 100.

Welding

UNS C35600 brass alloys can be welded using brazing, soldering, and butt welding methods. Gas shielded arc welding, oxyacetylene welding, spot welding, coated metal arc welding, and seam welding methods are not used for welding these alloys.

Forging

UNS C35600 brass alloys can be forged at temperatures ranging from 705 to 788°C (1300 to 1450°F).

Hot Working

UNS C35600 brass alloys have average hot forming capacity.

Cold Working

UNS C35600 brass alloys have poor cold working capacity.

Annealing

UNS C35600 brass alloys can be annealed at 427 to 594°C (800 to 1200°F).

Applications

The UNS C35600 brass alloys can be used in screw machine products for peening, thread rolling, crimping, and knurling purposes. They also find applications in the following areas:

  • Watch
  • Hose fittings
  • Bicycle spoke nipples
  • Clock and lock parts
  • Plumbing valve components

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