Why Choose Leaded Bronze?

Leaded bronze is a favorite among many fabricators and metalworkers. Metallurgists understand the need to use this alloy in certain applications. By adding lead to bronze, fabricators can improve certain capabilities of a product. This makes this metal alloy attractive. The combined properties of the two provide a major reason why some choose it over unleaded or other forms of bronze alloys.

Key Features

When lead and bronze metals combine, the result is an alloy capable of providing fabricators and applications with certain qualities. The list is quite extensive consisting of both advantageous chemical and economical properties. Among the more common are:

  • Excellent wear resistance
  • Good casting properties
  • Excellent machining properties
  • Good load carrying capacity
  • Effective thermal conductivity
  • Good hardness
  • Good strength
  • Excellent antifriction
  • Readily broached or reamed
  • Good anti-corrosion properties

What is of particular importance to companies worried about their production cost ratio is the cost. Leaded bronze is less expensive than other bronze alloys for such things as bearings.

Applications

This bronze alloy is generally excellent for use in a variety of applications where loads and speed fall into the category of medium. Common applications include the flowing:

Bushings: Examples include:

  • spring-shackle, electric-motor, and torque-tube bushings
  • bushings for automotive distributors, generators, and starters
  • sleeve bushings for cranes and draglines
  • track-roller bushings for crawler tractors
  • guide bushings for piston rods, rams, and valves
  • camshaft bushings for tractor engines
  • roller bushings for conveyors
  • mechanical linkage bushings for farm and material-handling equipment
  • spindle bushings for farm equipment and trucks

Bearings: This large category finds this alloy suitable. Among the applications are:

  • motorcycle-engine bearings
  • main bearings for presses
  • roller mill bearings
  • Washers

Leaded Bronze
Bronze comes in both leaded and unleaded varieties. When it comes to improved machinability, fabricators prefer leaded bronze. They appreciate its functional properties and cost-effectiveness. As a result, it remains consistently popular in the industry.

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