904L (00Cr20Ni25Mo4.5Cu) Stainless Steel Sheet Coil
Grade 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon
content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. The steel is also resistant to stress corrosion cracking and crevice corrosion. Grade 904L is non-magnetic, and offers excellent
formability, toughness and weldability.
Grade 904L contains high amounts of expensive ingredients, such as molybdenum and nickel. Today, most of the applications that employ grade 904L are replaced by low-cost duplex stainless steel 2205.
2. Grade 904L has a high corrosion resistance to a wide range of corrosive environments. A PER of 35 incicates that the steel grade has good resistance to warm sea water and other high chloride environments. High nickel content results in a much better resistance to stress corrosion cracking than the standard austenitic grades. Copper adds resistance to sulphuric and other reducing acids, particularly in the very aggressive 'MID concentration' range.
|Type#||UNS#|| Chemical Composition(%)|
|Type#||UNS#|| Mechnical Property|
|Tensile Strength||Yield Strength, Bmin||Elongation 2 in, or 50 mm, min, %||Hardness, maxc|
|Ksi||MPa||Ksi||MPa|| ||Brinell||Rockwell B|
Some of the major applications of grade 904L stainless steels include:
· Wiring in electrostatic precipitators
· Oil refinery components
· Seawater cooling devices
· Gas scrubbing plants
· Pulp and paper processing industries