FeSi briquette / ball — The best substitute of FeSi for steel making We are the manufacturer of FeSi briquette / ball, it is made of ferro silicon powder by machine—press. It can instead of ferro silicon with uniform size, good performance and lower price. It used as additives & deoxidizer in steel making. Si: 70%min Fe: 20%min Al: 2%max P: 0.04%max S: 0.04%max C: 0.5%max Size: 10-50mm or as customer's requirements. Si: 65%min Fe: 20%min Al: 3%max P: 0.05%max S: 0.05%max C: 2%max Size: 10-50mm or as customer's requirements. If you have interests of it, please feel free to contact me, looking forward to have an amazing connection with you!