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3CR12® - Fabrication
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3CR12® is a "User Friendly" steel in that it does not work harden appreciably and has good weld characteristics. It behaves much like an austenitic stainless steel in that it is a gradual yielding steel and does not show a definite yield point. Due to the high chromium content of 3CR12® it cannot be cut with the conventional oxy-acetylene torch. Plasma and laser cutting of 3CR12® are the fastest thermal cutting methods.
3CR12® is metallurgically designed to have good weldability. Its fine grained microstructure is determined by micro-alloy element control which prevents grain growth in the heat affected zone (HAZ) and allows high integrity welds in section thicknesses up to 1". The following weld processes have been successfully used on 3CR12® including: GTAW, SMAW, FCAW, TIG, MIG and laser resistance.
3CR12® is designed to provide excellent abrasion resistance, therefore coatings or paint systems are not necessary for anti-abrasive purposes. Under normal corrosive conditions, 3CR12® will discolor, without affecting its performance. For aesthetic reasons painting may be the solution. Normal preparation is necessary, such as ensuring a clean, grease and contamination free surface. A primer coat is recommended for cold rolled material due to its smoother surface, but hot rolled, annealed and pickled steel may be suitably painted in a single coat.
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