Stainless steel coils are divided into austenitic, ferritic, martensitic, duplex (ferritic-austenite) stainless steel cold rolled coils and stainless steel hot rolled coils.
but do you konw the common surface treatments of stainless steel coils?
N0.1: heat treatment and pickling treatment after hot-rolled
2B :heat treatment, pickling or the like is performed after cold rolling, and finally smoothness is obtained to obtain proper gloss
2D : heat treatment, pickling or similar treatment or matte surface after cold rolling.
3# : 100~200# grinding belt grinding
4# : 150 ~ 180 # grinding belt grinding
HL :Grinding of the abrasive material with a suitable particle size gives the surface a continuous graining.
In order to ensure that the mechanical properties such as yield strength, tensile strength, elongation, and hardness of various types of stainless steel coil meet the requirements, the stainless steel coil must be subjected to annealing, solution treatment, aging treatment, and other heat treatment before delivery.
The corrosion resistance of stainless steel coil mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, etc.) and the internal structure of stainless steel coils, and the main role is chromium.
Chromium has a high chemical stability and can form a passivation film on the surface of the steel to isolate the metal from the outside, protect the steel plate from oxidation, and increase the corrosion resistance of the steel plate. After the passivation film is destroyed, the corrosion resistance decreases.
Stainless steel coils are widely used in chemical, food, medicine, paper, petroleum, nuclear energy and other industries, as well as construction, kitchen utensils, cutlery, vehicles, household appliances and other parts
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