High Leaded Brass UNS C35300

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Welding
     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. UNS C35300 high leaded brass alloys have free machining properties and low formability. They are available as rod and flat products.

The following datasheet gives details about UNS C35300 brass alloys.

Chemical Composition

The chemical composition of UNS C35300 brass alloys is outlined in the following table.

Element Content (%)
Cu 62
Pb 1.8
Zn 36.2

Physical Properties

The following table shows physical properties of UNS C35300 brass alloys.

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 C35300 brass alloys are tabulated below.

Properties Metric Imperial
Tensile strength 338-586 MPa 49000-85000 psi
Yield strength (depending on temper) 117-427 MPa 17000-61900 psi
Elongation at break ( in 127 mm) 52% 52%
Modulus of elasticity 117 GPa 17000 ksi
Poisson’s ratio 0.34 0.34
Machinability (UNS C36000 (free-cutting brass) = 100) 90 90
Shear modulus 39 GPa 5660 ksi

Thermal Properties

The thermal properties of UNS C35300 brass alloys are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 20-300°C/68-572°F ) 20.3 µm/m°C 11.3 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 C35300 brass alloys include:

  • ASTM B121
  • ASTM B453

Fabrication and Heat Treatment

Machinability

The machinability rate of UNS C35300 brass alloys is 90.

Welding

Brazing, soldering, and butt welding are most commonly used methods for welding the UNS C35300 brass alloys. Seam welding, gas shielded arc welding, oxyacetylene welding, coated metal arc welding, and spot welding methods are not used for welding these alloys.

Hot Working

UNS C35300 brass alloys have poor hot forming capacity.

Cold Working

UNS C35300 brass alloys have average cold working capacity.

Annealing

Annealing of UNS C35300 brass alloys can be performed at temperatures ranging from 427 to 594°C (800 to 1100°F).

Applications

UNS C35300 brass alloys are used in screw machine products for peening, thread rolling, crimping, and knurling purposes. They are also used in the following applications:

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

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