Comparative Analysis of Main Cold Rolled Stainless Steel Sheets (304 / 316L / 201 / 430)

 

1. Price Difference

In international bulk trade price ranking from high to low: 316L＞304＞430＞201

316L: Contains molybdenum element, raw material cost highest, around 15%~25% higher than 304.

304: Standard nickel-chromium austenitic steel, medium price, mainstream market benchmark.

430: Nickel-free ferritic grade, cost roughly 20% lower than 304.

201: Low-nickel high-manganese economical grade, cheapest among four materials, 30%~40% cheaper than 304.Price fluctuation is mainly affected by international nickel, chrome and manganese spot market.

2. Corrosion Resistance

Rank: 316L＞304＞430＞201

316L: Mo element greatly improves resistance against chloride, acid, alkali and seawater erosion, suitable for coastal & chemical corrosive environment.

304: Excellent atmospheric & fresh water anti-rust property, good performance under normal indoor & outdoor common humidity environment, poor in long-term chloride-rich scene.

430: Good oxidation resistance in dry air, easy to rust in coastal salt fog or humid acid environment.

201: Weak anti-corrosion, prone to rust under long-term damp or salt spray, only for dry indoor environment.

3. Application Industry

316L: Chemical equipment, seawater desalination, marine facilities, medical devices, coastal engineering.

304: Kitchen sink, household appliance shell, elevator decoration, food machinery, municipal outdoor facilities (the most widely used).

430: Gas cooker panel, washing machine inner barrel, indoor decorative trim, household electrical accessories.

201: Indoor decorative plate, furniture fittings, indoor door frame, low-cost interior decoration.

4. Service Life (under regular service environment)

316L: 25~35 years even in coastal salt fog & weak corrosive conditions.

304: 15~25 years for outdoor atmospheric environment; over 30 years under dry indoor condition.

430: 8~15 years for dry indoor use; only 3~5 years if applied in humid coastal areas.

201: 3~8 years for dry indoor; easy rust failure within 2~3 years in damp outdoor environment.

5. Processing Performance

304 & 316L: Outstanding bending, deep drawing, stamping and welding property, suitable for complex forming and deep drawing parts.

430: Good bending capacity, limited deep drawing performance, easy crack during ultra-deep stamping.

201: High hardness, poor ductility, difficult for deep drawing, simple cutting & bending only.