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Stainless steel coil: the shining star of metal materials

2025-06-06 14:57:53

Stainless steel coils are corrosion-resistant alloy coils based on an iron-chromium alloy (with a chromium content ≥10.5%), alloyed with elements like nickel, molybdenum, and manganese. Their core properties originate from the passive film formed by chromium oxidation, which can resist oxidation, acid-base, and high-temperature corrosion. Depending on differences in microstructure and composition, they are categorized into series such as austenitic, ferritic, and martensitic. They are widely applied in fields including food processing, chemical energy, medical equipment, and transportation.

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Advantages of Stainless Steel Coils

Stainless steel coils excel in corrosion resistance, high-temperature performance, hygiene, and recyclability:

①Corrosion Resistance

Type 304 resists the atmosphere, fresh water, and weak acids/alkalis (pH 3–11).

Type 316 withstands seawater, chlorides, and sulfuric acid.

Type 430 is resistant to nitric acid and organic acids.

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②High-Temperature Performance

Austenitic steels (e.g., 304): Continuous service temperature ≤870°C, with strong oxidation resistance.

Ferritic steels (e.g., 430): Resistant to high-temperature sulfidation, suitable for applications like automotive exhaust pipes.

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③Hygiene

Surface finish reaches Ra ≤0.8μm, meeting the US FDA food contact standard (21 CFR 175.300).

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④Recyclability

100% recyclable, with carbon emissions 60% lower than carbon steel over its life cycle.

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These properties enable stainless steel to be widely used in industries such as chemicals, food, and automotive.


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