ER630（H0Cr17Ni4Cu4Nb）不銹鋼焊絲；                                                                                                                                     化學成分；

C;0.05，Mn；0.25-0.75，Si；.075，Cr；15.5-17.5，Ni4.0-5.0，Mo0.75，Cu3.0-4.0，Nb0.15-0.45，S0.03，p0.03，                                                                           用途；用于同等材質的不銹鋼的焊