904L Stainless Steel Plate
904L stainless steel plate is a super austenitic stainless steel. It has an overwhelming corrosion resistance advantage over common steels like 316L in extreme corrosive environments, such as non-oxidizing acids (e.g., sulfuric acid, phosphoric acid) and chloride-containing solutions (e.g., seawater).
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Product Introduction

904L Stainless Steel Plate is a premium super austenitic stainless steel designed for the most aggressive corrosive environments. Recognized by its high nickel, chromium, molybdenum, and copper content, it is the material of choice for handling hot sulfuric, phosphoric, and organic acids where common grades like 316L are insufficient.

Its defining feature is a very low carbon content, coupled with a balanced, high alloy composition. This provides outstanding resistance to general corrosion, pitting, crevice corrosion, and stress corrosion cracking (SCC), especially in chloride and sulfuric acid containing media. 904L maintains good weldability and formability, and is approved for use in pressure vessel construction.

Product parameters


Item / ParameterSpecification / Value for 904L
Key FeatureTop-tier corrosion resistance in acids & chlorides, weldable, for critical service.
Standard DesignationsUNS N08904, EN 1.4539, 00Cr20Ni25Mo4.5Cu
Chemical Composition (Typical wt.%)C: ≤ 0.03 Cr: 18.0-20.0 Ni: 23.0-25.0 Mo: 3.0-4.0 Cu: 4.0-5.0
Mechanical Properties (Annealed)Tensile Strength: ≥ 490 MPa Yield Strength: ≥ 216 MPa Elongation: ≥ 35%
Physical PropertiesDensity: ~8.24 g/cm³ Melting Point: ~1300-1390 °C Magnetism: Non-magnetic (austenitic)
Key Corrosion ResistanceExcellent in: Sulfuric, phosphoric, organic acids. Superior pitting, crevice, and stress corrosion resistance in chlorides.
Primary ApplicationsChemical & petrochemical reactors, sulfuric acid storage/transport, seawater desalination & treatment, power plant flue gas desulfurization (FGD) systems, pulp & paper bleaching plants.

Surface selection

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Packaging and transportation

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FACTORY SHOW

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

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