w17
w17-
Sn can refine AIN particles , increase the amount of AIN precipitates after normalization , suppress the growth of the primary grain , strengthen the effect of inter-pass aging and reduce the secondary grain size ; thereby the W17 / 50 is reduced more than 0.2 W / kg .
加锡能使常化后析出的A1N质点更细小，数量增多，初次晶粒尺寸细化，使冷轧时效处理效果更显著，减小成品二次晶粒尺寸，铁损W（17/50）降低0.2W/kg以上。