Materials

Manganese Bronze (C67500)

• Material: A high-strength copper-zinc alloy (brass family) containing manganese and aluminum additions that significantly increase strength, hardness, and wear resistance compared to conventional brasses. C67500 is commonly selected for demanding industrial applications requiring a combination of strength, toughness, and corrosion resistance.

• Mechanical Properties:

  • Yield strength typically ranges from ~35–60 ksi, depending on product form and condition.

  • Tensile strength typically ranges from ~75–100 ksi.

  • Higher strength and hardness than standard brass alloys.

  • Good fatigue resistance and excellent wear resistance under heavy loading conditions.

  • Density remains similar to other copper-based alloys and is approximately 10–15% lighter than carbon steel.

• Corrosion Resistance:

  • Good resistance to atmospheric exposure, fresh water, and mild marine environments.

  • Suitable for many industrial and marine hardware applications.

  • Provides better corrosion resistance than many ferrous alloys but is generally less resistant than Aluminum Bronze alloys in aggressive seawater service.

  • Care should be taken in highly corrosive environments where dezincification or stress corrosion cracking may occur.

• Manufacturing Considerations:

  • Good machinability compared to many high-strength copper alloys.

  • High strength and wear resistance make it suitable for demanding mechanical applications.

  • Well-suited for casting and machining operations.

  • Can be brazed and soldered using appropriate procedures; welding requires specialized techniques.

• Applications in Fasteners & Components:

  • High-strength fasteners requiring improved corrosion resistance compared to carbon steel.

  • Bushings, bearings, wear plates, and other sliding or load-bearing components.

  • Marine hardware and industrial equipment components.

  • Mining, oilfield, and heavy equipment applications where strength and wear resistance are critical.

  • Gears, worm wheels, and other power transmission components.