1. Japanese standard channel steel is a long strip of steel with a groove-shaped cross-section. It is a carbon structural steel used in construction and machinery. It is a profiled steel material with a complex cross-section and has a groove-shaped cross-section. American standard channel steel is mainly used in building structures, curtain wall engineering, machinery and equipment, and vehicle manufacturing.
2. Implementation standard of Japanese standard channel steel: JIS standard
3. The materials of Japanese standard channel steel are: Q235B, A36, SS400, S490, S490A, S490B, etc.
4. Delivery status of Japanese standard channel steel: Except for special requirements, it is delivered in a hot-rolled or forged state; when used as mold steel, it is usually delivered in a hot-rolled, normalized, normalized and tempered state.
(1) Normalizing of Japanese standard channel steel: A heat treatment process in which steel or steel parts are heated to an appropriate temperature above the critical point AC3 or ACM, maintained for a certain period of time, and then cooled in the air to obtain a pearlite-like structure.
(2) Annealing of Japanese standard channel steel: Heat the hypoeutectoid steel workpiece to 20-40 degrees above AC3, keep it warm for a period of time, and slowly cool it with the furnace (or bury it in sand or lime to cool it) to below 500 degrees. Heat treatment process cooled in air
