manganese bronze

Manganese bronze is a type of bronze, which is an alloy traditionally made of copper and tin. However, modern bronzes, including manganese bronze, can have other metals substituted for tin, such as aluminum, manganese, and zinc.1

Manganese bronze itself is made in several varieties. One type is essentially a brass with a small amount of manganese added as a deoxidizer, resulting in less than 0.5 percent manganese in the final alloy. Another type contains 2 to 5 percent manganese along with 2 to 4 percent iron and 3 to 7.5 percent aluminum, giving it exceptionally high strength and earning it the name high-tensile manganese bronze or manganese-aluminum bronze. These alloys are valued for their strength, corrosion resistance, and good casting qualities.23