stainless steel 409  It is a high strength stainless steel. These steels have the lowest chromium content of all stainless steels and therefore are inexpensive and therefore ideal for annealing. Operate in environments with no corrosive or mild corrosion and partial rust is allowed. stainless steel plate type The 409 was originally designed for use in automobile exhaust system silencers. (External corrosion) Stainless steel 410L is commonly used in containers, buses and large long-distance cars and has recently been used as a frame for LCD monitors.

The difference between cold rolled stainless steel plate and hot rolled plate

Cold rolling: Hot rolled coil is used as raw material, and the scale is removed by pickling followed by continuous cold rolling. The finished product is difficult to roll. The cold work hardening caused by continuous cold deformation increases the hardness and hardness of the rolled hard roll and is tough. plastic indicator drop

Therefore, the drilling efficiency is reduced and is applicable only to deformed parts. Rolled hard rolls can be used as raw materials for hot-dip galvanizing plants as hot-dip galvanizing units have annealing lines.

The coil weight is generally 6~13.5 tons, and the steel coil is at normal temperature.

The hot-rolled pickling rolls are rolled continuously. Inner diameter 610 mm.

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Product features 

As it is not annealed, the hardness is very high (HRB greater than 90) and the machining efficiency is very poor. Only the conventional direction bending procedure is less than 90 degrees (perpendicular to the winding direction) is possible.

In simple words, cold rolling is processed and rolled on the basis of hot rolled coils, generally in the process of hot rolling - pickling - cold rolling.

Hot rolling depends on the slab. (mainly continuous casting billets) which are heat treated to form strips from rough mills and fine mills. The hot steel bar from the final rolling mill is cooled by laminar flow to the set temperature.

Rolled into steel coils by evaporator coils, cooled steel coils after different finishing lines according to different requirements of users (flattening, straightening, cross-section or shearing, inspection, weighing, packaging and marking, etc.) into a steel plate.

Flat rolls and cut rebar products. To make it easier, the billet is finely rolled after heat treatment. (That's the red hot iron block in the TV) and then trim and fix it to form a griddle. This is called hot rolling.