Kwasoodporna OH18N9 1H18N9 OOH17N13M2T OH22N24M4TCU 1.4571 1.4541 1.4550 1.4539 1.4404 1.4436 316L 316Ti 347 X22CrMoV12-1 1.4923 X12CrNiMoV12-3 1.4938 X19CrMoNbVN11-1 1.4913 ASTM AISI WNR 1.4418 X4CrNiMo16-5-1 X4CrNiMo1651 Z6CND16-05-01