Passivation film theory
The corrosion resistance mechanism of stainless steel is the passive film theory.
The so-called passive film is a layer of Cr2O3 based film on the surface of stainless steel. Because of the existence of this film, the corrosion of stainless steel substrate in various media is hindered. This phenomenon is called passivation. There are two conditions for the formation of this passive film. One is that stainless steel itself has the ability of self passivation, which accelerates with the increase of chromium content. Another extensive forming condition is that stainless steel forms passive film in various aqueous solutions (electrolytes) during corrosion, which hinders corrosion.
Product Specifications
Name | Stainless steel coil 316 | |
cold rolled | hot rolled | |
Length | 1000-6000mm or customized | 1000-6000mm or customized |
Width | 600-1219mm or customized | 1000-2000mm or customized |
Thickness | 0.3-4mm or customized | 3-6mm or customized |
Standard | ASTM, AISI, GB, JIS, DIN, EN, etc | |
Surface | 2B, 2E, BA, HL, NO.1, NO.4, 6K, 8K, embossed, mirror, polished | |
Technique | cold rolled, hot rolled | |
Edge | Mill Edge, Slit Edge | |
Processing | bending, welding, stamping, punching, cutting | |
Certificate | ISO, SGS, BV | |
Application | Pulp and paper equipment; Heat exchanger; Dyeing equipment; Film processing equipment. | |
Packaging | Waterproof paper, and steel strip packed. | |
Chemical Compositions (%)
Grade | C | S | Mn | P | S | Ni | Cr | Mo | N |
316 | ≤0.08 | ≤0.75 | ≤2.0 | ≤0.045 | ≤0.03 | 10.0-14.0 | 2.0-3.0 | 2.0-3.0 | ≤0.1 |
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3.Our products all passed ISO 9001.
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