Counterattack type crusher accessories ordinary high chromium plate hammer, the hardness value is only 58-60 degrees, and we Hunan Fengwei Wear Parts Foundry with rare element molybdenum and niobium configuration, the hardness is up to 65-68, refine the grade of 8, the impact toughness has generally increased, martensite more refined, wear-resisting degree obtained improved. It has Hunan high impact crusher parts, high chrome hammer, so that you can improve your work efficiency!