Medium Leaded Brass UNS C35000

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 includes a broad range of copper-zinc alloys having a variety of properties such as ductility, wear-resistance, color, machinability, strength, hardness, antimicrobial, corrosion-resistance, and electrical and thermal conductivity. UNS C35000 medium leaded brass alloys are one of the types of brass, which have 62% free-machining brass coupled with good formability.

The following datasheet will provide more details about UNS C35000 medium leaded brass alloys.

Chemical Composition

The following table shows the chemical composition of UNS C35000 medium leaded brass alloys.

Element Content (%)
Cu 62.5
Pb 1.1
Zn 36.4

Physical Properties

The physical properties of UNS C35000 medium leaded brass alloys are outlined in the following table.

Properties Metric Imperial
Density 8.47 g/cm³ 0.306 lb/in³

Mechanical Properties

The mechanical properties UNS C35000 medium leaded brass alloys are tabulated below.

Properties Metric Imperial
Tensile strength 310-655 MPa 45000-95000 psi
Yield strength (depending on temper) 90.0-483 MPa 13100-70100 psi
Elongation at break (in 25.4 mm) 66% 66%
Elastic modulus 117 GPa 17000 ksi
Poisson’s ratio 0.34 0.34
Machinability (UNS C36000 (free-cutting brass) = 100) 70 70
Shear modulus 39.0 GPa 5660 ksi

Thermal Properties

The thermal properties UNS C35000 medium leaded brass alloys are tabulated below.

Properties Metric Imperial
Thermal conductivity (@20°C/ 68°F ) 115 W/mK 798 BTU in/hr.ft².°F

Other Designations

Equivalent materials to UNS C35000 medium leaded brass alloys are:

  • ASTM B121
  • ASTM B453
  • SAE J461
  • SAE J463

Fabrication and Heat Treatment

Machinability

The machinability rate of UNS C35000 medium leaded brass alloys are 70.

Welding

Soldering, brazing, and butt welding are considered as suitable welding processes, whereas processes such as oxyacetylene welding, gas shielded arc welding, coated metal arc welding spot welding, seam welding are not recommended for UNS C35000 alloys.

Forging

UNS C35000 alloys have a hot forgeability rating of 50 with the recommended hot working temperature ranging between 760 and 816°C (1400 and 1500°F).

Hot Working

The hot working capacity of UNS C35000 medium leaded brass alloys is rated as fair.

Cold Working

The cold working capacity of UNS C35000 is rated as fair.

Annealing

The annealing temperature of UNS C35000 medium leaded brass alloys is between 427 and 593°C (800 and 1100°F).

Applications

UNS C35000 medium leaded brass alloys are primarily used for screw machine products that need limited cold formability, knurling, crimping, peening, and thread rolling.

The other uses of UNS C35000 are as follows:

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

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