... 331 powder.Metal protected.Carbon steel, steel alloy, stainless steel, aluminum and its alloy.ClearnessTo move powder residues easily by air presser ... 65 degree temperature For 12 months.Note: effective to copper and its alloy, galvanized steel, tinned plate, printed plate, can also ... metal contained with iron, aluminum and its alloy, it is not effective to non-ferrous and coated metal unless it pass ...