High Pressure Application 904L / N08904 Stainless Steel Sheets Plates 0.6 - 60.0mm Cold Rolled

High Pressure Application 904L / N08904 Stainless Steel Sheets Plates 0.6 - 60.0mm Cold Rolled

Products Specification

Introduce of 904L Stainless Steel

Alloy 904L (UNS N08904) is a super austenitic stainless steel that is designed for moderate to high corrosion resistance in a wide range of process environments. The combination of high chromium and nickel content, coupled with additions of molybdenum and copper, assure good to excellent corrosion resistance. With its highly alloyed chemistry — 25% nickel and 4.5% molybdenum, 904L provides good chloride stress corrosion cracking resistance, pitting and general corrosion resistance superior to 316L and 317L molybdenum enhanced stainless steels. Alloy 904L was originally developed to withstand environments containing dilute sulfuric acid. It also offers good resistance to other inorganic acids such as hot phosphoric acid as well as most organic acids. Alloy 904L is easily welded and processed by standard shop fabrication practices.

Resistance to corrosion

• Good strength and toughness at cryogenic temperatures
• Ease of cleaning
• Excellent formability
• Resistance to oxidation
• Prevention of product contamination
• East of fabrication
• Beauty of appearance
• High strength with low weight
• Ready availability of a wide range of product forms

CHEMICAL PROPERTIES

WELDING

Alloy 904L can be readily welded by most standard processes. Austenitic plate materials have a homogeneous austenitic structure with an even distribution of alloying elements. Solidification after welding causes the redistribution of certain elements such as molybdenum, chromium and nickel. These segregations remain in the cast structure of the weld and can impair the corrosion resistance in certain environments. Segregation is less evident in 904L, and this material is normally welded using a filler metal of the same composition as the base metal and can even be welded without filler metal. The welding consumables for 904L are 20 25 CuL covered electrode

FAQ

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