MATERIAL NAME:                                ALUMINIUM ALLOY LC9-CS                          CHEMICAL COMPOSITION:                                                                         Cu = 1.2%-2.0%                                                                         Mg = 2.0%-3.0%                                                                         Mn = 0.15%                                                                         Fe = 0.5%                                                                         Si = 0.5%                                                                         Zn = 5.1%-6.1%                                                                         Cr = 0.16%-0.30%             OTHER IMPURITIES:                                                                  &nbs