Stainless Steel Wire

If chrome is added to the steel, it becomes difficult to get corrosion in the 12% degree. When we closely examine the surface of stainless steel in reality, we can find that very thick(below thickness 0.0000025mm) oxide film is coated in the surface.
This film is attached to the steel, keeping it from proceeding with oxidizing further. This oxidation film is called as "Passivity" film, being influenced by chemical composition surface condition, heat treatment, working condition, and kind of corrosion. In order that corrosion is not made, this film of stainless steel is required to be evenly formed on the surface, but in actuality, the film may get corrosion by being destroyed with iron content or aliens sticked to the surface. So it is necessay to maintain the surface of stainless steel very cleanly to prevent it

Corrosion-resistance

Classification by Composition

Classification by Composition

Classification of Stainless Steel

Stainless Steel is steel the surface of which is difficult to be rusted in the air or underwater, or other corrosion enveronment.

Stainless Steel contains more then 5% chrome as an alloyed steel of steel-chrome or steel-chrome-nickel line, and the contents of iron is prescribed above 50%, but generally one over chrome 12% is called stainless steel, due to heat resisting and corrosin resistance.

Stainless Steel?

HS CODE 7218999000