Introduction
904L Super austenitic stainless steel of low carbon and high nickel, molybdenum austenitic stainless and acid-resistant steel, for the introduction of France h • S the company's proprietary material.
---a good change activation-deactivation capabilities, excellent corrosion resistance, non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, phosphoric acid and has good corrosion resistance, in the neutral medium containing chloride ions has a good resistance to pitting, has a good resistance to crevice corrosion and stress corrosion performance.
---Applies to 70 ℃ the following kinds of concentrated sulfuric acid at atmospheric pressure under any concentration, temperature of acetic acid and formic acid and acetic acid corrosion resistance is also very good.

Technical Parameter

904L stainless steel
Standard	Grade	Chemical Composition %	Technique	Yied strength Mpa	Tensile strength Mpa	Elongation %	Hardness
GB	0Cr20Ni25Si Mn4.5Cu	C≤0.02，Mn≤2.00， Si≤1.00，P≤0.045， S≤0.035，Cr 19.0~23.0, Ni 23~28,Mo 4~5, Ni 23~28, Cu 1.0~2.0	Annealed, hot rolled/ cold rolled	≥220	≥490	≥36	HV≤150
USA	N08904
JIS	/
German	1.4539

Application
* Petroleum and petrochemical equipment, petrochemical equipment in the reactor.
* Sulfuric acid storage and transportation equipment, such as heat ex-changers, and so on.
* Power plant flue gas desulfurization equipment, mainly using parts: absorber Tower, flue, stall doors, trim, sprinkler systems, etc.
* Organic acid scrubber and the fans in the system.
* Sea-water treatment plant, seawater heat ex-changers Equipment for the paper industry, sulfuric acid and nitric acid equipment, pharmaceutical industry of sulfuric acid and other chemical equipment, pressure vessels, food equipment.
* Pharmaceutical factory: centrifuge, reactor, and so on.
* Plant foods: soy sauce pots, cooking wine, salt shakers, equipment and dressing.