烏克蘭金属科学研究所試驗直接用鋼水澆鑄鑽粒获得成功。鑄鋼鑽粒的技术特性如下: (1)化学成份:C=0.60-0.75％;Si=0.17-0.37％;Mn=0.50-0.80％;S≤0.06％;P=0.08％; (2)鋼粒形状是球狀的,形狀不正常的不能超过7％; (3)鋼粒鑄成以下几种規格:2.5;3.0;3.5;4.0公厘; (4)各种规格鋼粒的抗碎强度值列于表1(夾在BK15硬質合金薄片間試驗); The Ukrainian Institute of Metal Research has succeeded in casting diamond directly with molten steel. The technical characteristics of the steel castings are as follows: (1) Chemical composition: C = 0.60-0.75%; Si = 0.17-0.37%; Mn = 0.50-0.80%; S≤0.06%; P = 0.08%; (2) Grain shape is spherical, the shape of the abnormal can not exceed 7%; (3) steel cast the following specifications: 2.5; 3.0; 3.5; 4.0 mm; (4) various specifications of the grain crushing strength Values ​​are listed in Table 1 (sandwiched between BK15 cemented carbide sheets);