STRONTIUM METAL CLASS:4.3 UN NO:1393 PACKING GROUP II H.S: 2805.19.00 Origin: Shanxi, China. Size: 2.5kg Strontium pieces Packed in Aluminum cans. Packing: 20 Aluminum cans put into a steel drum, every 50kg net per steel drum, every 18 steel drums on one pallet. Applications: Strontium metal is used in Strontium 90%-Aluminum 10% alloys of an eutectic composition for the modification of Aluminum-Silicon casting alloys.