What is the difference between 1.4404 and 1.4462?
Jan 12, 2026
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What is the difference between 1.4404 and 1.4462?
What material is 1.4462 equivalent to?
Material 1.4462 (also known as X2CrNiMoN22-5-3) is a duplex stainless steel equivalent to US grades UNS S31803 (ASTM A182 F51) and UNS S32205 (ASTM A182 F60), offering high strength and excellent corrosion resistance, particularly in chloride environments, with other equivalents including UK's 318S13 and Swedish SS 2377
What is 1.4404 material grade?
1.4404 is the European (EN) designation for AISI 316L, a low-carbon, austenitic stainless steel known for excellent corrosion resistance, especially in chloride-rich environments like seawater, due to its chromium, nickel, and molybdenum content, making it ideal for chemical, food, beverage, and medical applications. It offers superior pitting resistance compared to standard 304/304L steels and good weldability.
What is the difference between 1.4404 and 1.4462?
1.4404 (316L) is an austenitic stainless steel, known for good corrosion resistance, while 1.4462 (2205) is a stronger duplex stainless steel with a mixed ferrite-austenite structure, offering roughly double the strength of 1.4404, better stress corrosion cracking resistance, and high strength for structural uses, though 1.4404 generally has slightly better corrosion resistance in some specific harsh chloride environments.
Duplex 2205 vs 316L corrosion resistance
1.4462 contains more chromium, molybdenum, and nitrogen, resulting in a higher PREN (Pitting Resistance Equivalent Number) and better overall resistance to localized corrosion-particularly in seawater, brine, and acidic chemicals.
316L performs well in most freshwater, mild acid, and indoor applications but can suffer from pitting corrosion in saltwater or aggressive media without proper surface treatment.
316L vs 1.4462 strength
1.4462 has a yield strength approximately 2 times higher, making it ideal for load-bearing, high-pressure systems or applications where reduced wall thickness is required to reduce weight.
316L is easier to form and is the preferred choice for deep drawing, bending or applications requiring high elongation.
316L vs 1.4462:Cost
In terms of initial cost, 316L austenitic stainless steel is generally cheaper than EN 1.4462 duplex stainless steel, however, from a total life cycle cost (LCC) perspective, 1.4462 is more cost-effective in the long term. Its excellent corrosion resistance reduces maintenance, downtime and replacement frequency.
What Is The Difference Between 1.4401 And 1.4462?
1.4401 (AISI 316) is an austenitic stainless steel, good for general corrosion resistance with added molybdenum, while 1.4462 (AISI 2205) is a duplex stainless steel, offering significantly higher strength and superior resistance to stress corrosion cracking (SCC) in highly aggressive, chloride-rich environments like seawater, making 1.4462 better for harsh conditions where 1.4401 might fail.
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The pipes are packaged with waterproof paper and steel straps, meeting standard export sea freight packaging requirements, suitable for various transportation methods, or customized according to customer requirements.
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ASTM A790 UNS S32205 Stainless Steel Round pipe
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