Manganese Bronze Alloy
Manganese bronze contains small additions of manganese, iron, and aluminum, plus lead for lubricity, anti-seizing, and bonding. Like the aluminum bronzes, they combine high strength with excellent corrosion resistance — qualities that make manganese bronze a trusted material across the aerospace, fastener, marine, and oil and gas industries. Manganese bronze bearings can operate at high speeds under heavy loads, but require high shaft hardness and nonabrasive operating conditions.Factors such as hardness, yield strength, and density vary across the 10 manganese bronze alloys distributed by Aviva Metals — see the full properties breakdown below. Manganese bronze variations such as C67300 Leaded Silicon Manganese Bronze have good bearing qualities that allow it to maintain high impact resistance with excellent machinability. Many of your manganese bronze choices are highly versatile, including C67600, which has elevated strength and corrosion resistance.
Manganese Bronze Properties & Composition
Manganese bronze properties vary significantly depending on form (wrought vs. cast) and alloy composition. The table below summarizes typical mechanical properties and nominal composition across all 10 manganese bronze alloys available from Aviva Metals. For exact specifications on a specific heat or production lot, request a mill certification with your quote.
Applications of Manganese Bronze
Manganese bronze is a popular choice across the aerospace, fastener, marine, and oil and gas industries, thanks to its combination of high strength, wear resistance, and corrosion resistance.
Aerospace
In aerospace applications, manganese bronze is used for landing gear parts, bushings, and bearings that must withstand high loads while resisting wear and corrosion in demanding flight environments.
Fastener
Manganese bronze's strength and corrosion resistance make it a reliable choice for fastener applications, including screw machine parts and lead screw nuts that require consistent performance under mechanical stress.
Marine
Manganese bronze's excellent corrosion resistance in saltwater environments makes it a go-to material for marine hardware, including propeller shaft components, strut bushings, and other fittings exposed to continuous moisture and wear.
Oil and Gas
In oil and gas applications, manganese bronze is used for gears, bushings, and wear parts that must perform reliably under heavy, continuous loads — particularly in equipment exposed to abrasive or high-friction conditions.
Grade Selection Guidance
For a manganese bronze that exhibits exceptional characteristics for hot working in closed-die forging applications, consider choosing C67500. For a continuous cast manganese bronze, C86300 is intended for use in applications combining outstanding wear characteristics and high bearing strength for heavy loads and slow speeds.
Manganese Bronze vs. Aluminum Bronze
Manganese bronze and aluminum bronze are both copper-based alloys known for high strength and corrosion resistance, but they differ in composition and ideal use case. Manganese bronze is primarily a copper-zinc (brass-based) alloy strengthened with manganese, iron, and aluminum additions, giving it strong bearing and wear characteristics — particularly in cast grades like C86300. Aluminum bronze, by contrast, is a copper-aluminum alloy without a zinc base, offering superior resistance to corrosion in highly aggressive marine and chemical environments, along with higher strength in grades like C95400.In general, manganese bronze is favored for bearing, bushing, and gear applications requiring high wear resistance under heavy loads, while aluminum bronze is often selected for components requiring maximum corrosion resistance in saltwater or chemical processing environments. Aviva Metals supplies both alloy families.
Frequently Asked Manganese Bronze Questions
What is manganese bronze?
Manganese bronze is a copper-zinc alloy, containing small amounts of manganese, aluminum, and iron. The addition of manganese, iron, and aluminum enhances the alloy's strength and resistance to corrosion. This material is known for its high strength and excellent corrosion and wear resistance.
Is manganese bronze the same as brass?
Manganese bronze is a type of brass. Specifically, it is a copper-zinc based alloy. While it is a type of refined brass, it also contains manganese, which gives it higher strength.
Is manganese bronze expensive?
Manganese bronze pricing varies based on your preferred metal shape and the quantity needed for your application.
Is manganese bronze magnetic?
No, manganese bronze is not magnetic. This is because it is a copper-based alloy, and copper is not magnetic.
What's the difference between manganese bronze and aluminum bronze?
Manganese bronze is a copper-zinc (brass-based) alloy known for strong bearing and wear characteristics, while aluminum bronze is a copper-aluminum alloy prized for superior corrosion resistance in harsh marine and chemical environments. See our full comparison above to determine which alloy fits your application.
Which manganese bronze grade is best for marine, fastener, or oil & gas applications?
C67600 offers elevated strength and corrosion resistance, making it well suited for marine and oil & gas fasteners exposed to harsh environments. C67500 is ideal for forged marine fittings and flanges, while C86300 is best for heavy-load, slow-speed bearing and gear applications such as those found in oil & gas equipment.
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