Konpozisyon chimik se endèks ki pi fondamantal nan granules asye ak sab asye, ki pral detèmine mikrostruktur nan granules asye ak sab asye ak efè a nan tretman chalè ki vin apre. Kabòn (C) detèmine dite ak kalite piki asye a, epi kontni an ta dwe modere. Si kabòn nan wo, dite a pa ase pou reyalize efè a akòz. Si kabòn nan wo, dite a twò gwo, ak piki asye a fasil pou kase. Silisyòm (Si) ka siyifikativman amelyore limit la elastik, pwen sede ak fòs rupture nan asye, Manganèz (Mn) ka amelyore fòs ak dite nan granules asye, amelyore pèfòmans nan travay tèmik nan asye, ak Manganèz ka diminye tou mal nan souf. , amelyore rezistans nan mete nan granules asye. Souf (S) ak fosfò (P) se eleman danjere, ki fasil pou frajil piki asye a epi ki mennen nan rupture twò bonè, epi yo ta dwe osi ba ke posib (<0.05% is the best). Chemical composition is the most basic index of steel pellets and steel sand, which will determine the microstructure of steel pellets and steel sand and the effect of subsequent heat treatment. Carbon (C) determines the hardness and quality of the steel shot, and the content should be moderate. If the carbon is high, the hardness is not enough to achieve the due effect. If the carbon is high, the hardness is too large, and the steel shot is easy to be broken. Silicon (Si) can significantly improve the elastic limit, yield point and tensile strength of steel, manganese (Mn) can improve the strength and hardness of steel pellets, improve the thermal working performance of steel, and manganese can also reduce the harm of sulfur, improve the wear resistance of steel pellets. Sulfur (S) and phosphorus (P) are harmful elements, which are easy to brittle the steel shot and lead to premature rupture, and should be as low as possible (<0.05% is the best).
