The scrap crusher hammer produced by China renewable technology adopts bimetallic composite casting process. The wear part is rare earth high chromium, molybdenum, nickel and titanium alloy, and the hammer handle part is high-quality alloy steel. It is suitable for all kinds of crushing materials. It is a domestic hammer with excellent cost performance and good casting stability. The scrap crusher hammer head series products produced by China renewable technology integrate the excellent wear resistance of high chromium 20 / 26 with the good toughness and mechanical properties of cast steel, so that the products have excellent overall comprehensive properties of wear resistance and impact resistance, and are suitable for the wear-resistant field under high impact load.