Here are a few facts about body chemistry, its effects on brass, and chemical cleaning: If there are small black spots in the middle of the pink spots, the red rot has eaten through the tubing and it must be replaced. It is displayed by small pink spots on the affected area showing through the plating or lacquer. This is commonly found in areas where moisture collects – mouthpipes, crooks of tuning slides, valve casings, etc. The organics pull the zinc out of the alloy and leave behind the soft copper. Dezincification is caused by organic elements (lime and scale) building up on the inside of the tubing and attacking the zinc in the brass. Brass instruments are especially susceptible to damage from the inside due to a process known as dezincification (or commonly known as “red rot”). No one would use a table setting day after day without proper cleaning, yet brass instruments are played continuously without regard for health, sanitary conditions, or the damaging effects on the brass itself and its finish.īrass is an alloy made up of zinc and copper (typically ~70% zinc, ~30% copper). Why is chemical cleaning your brass instruments so important?
1 Comment
Yo Mama
11/13/2023 02:13:23 pm
You have this backwards: brass is generally 70% copper and 30% zinc.
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