What is ms 61?

MS 61 is a type of brass alloy that is commonly used for musical instruments, specifically for piston and rotary valve trumpet or cornet parts. It is composed of 63% copper and 37% zinc, with trace amounts of lead and other elements. The alloy is prized for its combination of superior properties including durability, malleability, and resistance to corrosion. MS 61 is known for producing bright and brilliant tones, making it a popular choice among professional brass players.