Corrosion


The problem of corrosion

The performance of a PVC-U window depends on the quality of its components. If the fastener holding the hinge in place fails, the window is deemed to have failed. Carbon steel and martensitic steel screws are prone to corrosion, even when protective coatings have been applied. Extensive tests have confirmed that modified martensitic or nitrided fasteners are prone to failure and are not suitable for use in affixing window hardware. Under the microscope, modified martensitic fasteners show clear signs of failure. Recognising this, specifiers are increasingly demanding that only austenitic stainless steel fasteners are used to fix hardware to PVC-U frames because 300 series austenitic fasteners provide the only guarantee of anti-corrosion performance. Including austenitic fasteners in your specification With its unique square drive recessed head and its unrivalled range of bi-metallic drill screws, SFS intec has eliminated all the arguments against using austenitic fasteners. In laboratory and real life tests, carbon steel and martensitic steel fasteners show signs of corrosion when exposed, in application Easy to apply, austenitic fasteners from SFS intec are the first choice for specifiers and fabricators who are committed to quality. Because, uniquely, austenitic fasteners are non-magnetic, specifiers can police their specification with certainty.