What is Bronze Powder? Bronze Powder is a metal powder used in several industrial and cosmetic applications. Sieving Bronze Powder is a delicate process because the product is so dense and can quickly blind the screen mesh if you are not sieving this material with a Hi-Sifter high-energy screener. By keeping the particles elevated, the material is never allowed to blind the screen mesh. Elcan Industries consistently separates bronze powder in very fine sizes like 15 & 10um.