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Stainless steel plate



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Stainless steel plate materials available:

I. Austenitic Stainless Steel (300 Series)

Material GradeCompositionPropertiesApplications
304 Stainless Steel (06Cr19Ni10)18% Chromium (Cr), 8% Nickel (Ni), Carbon content ≤0.08%General-purpose material, resistant to weak corrosive media (water, atmosphere), excellent plasticity and weldability, but weak resistance to chloride corrosionFood processing equipment, architectural decoration, household appliances, etc.
316 Stainless Steel (06Cr17Ni12Mo2)304 base with 2%-3% Molybdenum (Mo) addedSignificantly improved resistance to chloride corrosion (e.g., seawater, salt spray environments), higher high-temperature strengthMarine engineering, chemical equipment, medical devices

II. Duplex Stainless Steel

Material GradeCompositionPropertiesApplications
2205 Duplex Steel (S32205)22% Chromium (Cr), 3% Molybdenum (Mo), 5% Nickel (Ni), and Nitrogen (N)Combines austenitic and ferritic structures, strength is 2 times that of 304, outstanding resistance to stress corrosion crackingOil and gas pipelines, offshore platform structural parts, pressure vessels
S32304 Duplex SteelMedium-alloy duplex steelCorrosion resistance close to 2205, but lower cost, suitable as a replacement for 304/316LPharmaceutical equipment, seawater desalination systems, etc.

III. Ferritic Stainless Steel (400 Series)

Material GradeCompositionPropertiesApplications
430 Stainless Steel (10Cr17)17% Chromium (Cr), no Nickel (Ni)Resistant to oxidizing acids and atmospheric corrosion, but poor toughness, weak weldability, lower costAutomotive trim parts, appliance housings, tableware, etc.

IV. Martensitic Stainless Steel

Material GradeCompositionPropertiesApplications
410 Stainless Steel (12Cr13)12% Chromium (Cr), 0.15% Carbon (C)Achieves high hardness and wear resistance through heat treatment, but corrosion resistance is weaker than austenitic steelCutting tools, bearings, valve parts, etc.

Material Selection Guidelines

Selection PriorityRecommended Materials
Corrosion resistance firstFor marine or chemical environments, choose 316 or duplex steel (e.g., 2205)
Cost-sensitive scenarios430 or low-alloy duplex steel (e.g., S32304) can replace 304/316L
High strength requirementsDuplex steel or martensitic steel (e.g., 410) suitable for mechanical load-bearing components
Export to the EUPay attention to the new "melting and casting traceability" regulation (effective April 2025): Chinese steel processed in a third country is still considered Chinese-origin

Appendix: International Standard References
ASTM A240/A240M: Standard specification for stainless steel plate for pressure vessels (e.g., 316, 2205)
EN 10088-2: European standard covering specifications for corrosion resistance and high-temperature stability

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