Birchwood Tru Temp XT Coats Difficult-to-Blacken Metals

Birchwood Technologies’ Tru Temp XT process is designed to form a durable black oxide finish on difficult-to-blacken steel, iron and most stainless steel alloys. It is a mid-temperature process that forms a satin black magnetite finish that protects surfaces in storage, shipment and startup, while resisting galling and aiding break-in. 

Operating at 230-260°F, Tru Temp XT is used as a two-stage chemical reaction, first using Oxyprime XT primer/prep, followed by Tru Temp XT to form a black magnetite finish — all within 30 minutes. For optimum appearance and corrosion protection, the black finish can be sealed with a rust preventative topcoat. Birchwood says the finish is Mil-Spec and RoHS compliant, and withstands up to 120 hours of neutral salt spray or several hundred hours of humidity. The finish is a 0.5 microns thick (20 millionths) crystalline structure that allows it to hold a rust inhibitor while serving as a sacrificial barrier to provide break-in lubricity and galling resistance.