We sell Cobalt Powder , Cobalt oxide powder, Cobalt oxalate, can sell at any quantity. Specification for our Cobalt powder , Cobalt oxide powder and Cobalt oxalate(Rare metal)1,Density:8.9 g per cm32,Atomic ... of hard and high melting point ,so it using in military make weapon and metal combination etc.7,purity:99.9%8,mesh:10-18um Purity 99.9% Cobalt powder and Cobalt oxide powder