Accelerated Tests of Protective Properties of Packaging Materials for Cold-Rolled Steel

Abstract

Metal products are exposed to atmospheric corrosion during transport, long-term storage and operation. An important trend in corrosion protection is development of cutting-edge packaging materials containing volatile corrosion inhibitors (VCI). The issue under study is relevant because metal products are mainly exported by sea through regions with a humid tropical climate. Package protective capabilities are in focus when selecting packaging materials containing volatile corrosion inhibitors. The paper contains the results of comparison testing corrosion protection capabilities of combined packaging papers with volatile corrosion inhibitors using a number of methods: as per GOST 9.054 (method 1), GOST 9.305, Germany VIA Test method and that of the USA Federal Standard. It is found that inhibitors protect cold-rolled steel provided the package is at least partly sealed. Tests with all accelerated methods show that the UNI inhibitor provides the best corrosion protection.