What is Stainless Steel 904L?

Because of its high concentrations of nickel molybdenum and copper, renowned for exceptional resistance to severe corrosion conditions, premium-grade, non-stabilized austenitic stainless steel 904L provides great protection against pitting, crevice corrosion, and stress corrosion cracking especially in media including sulphuric phosphorous and acetic acids.

Designed especially for use in very corrosive surroundings Stainless Steel 904L beats grades like 316L among others. Its low carbon concentration is suitable for built structures since it maintains corrosion resistance and stops carbide precipitation during welding.

Stainless Steel 904L Plates Specifications :

Stainless Steel 904L products conform to leading global standards:

Specifications ASTM A240 / ASME SA240
Thickness 4mm-100mm
Width 1000mm, 1219mm, 1500mm, 1309mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Length 2000mm, 2440mm, 3000mm, 5309mm, 6000mm, etc
Surface 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand

blast, Brush, etching, etc

Finish Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Form Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Welded Tube) etc.

Chemical Composition of Stainless Steel 904L Sheets & Plates

The alloy’s remarkable performance in challenging environments stems from its carefully balanced chemical makeup:

Grade   C Mn Si P S Cr Mo Ni Cu
SS 904L Min 19 4 23 1
Max 0.02 2 1 0.045 0.035 23 5 28 2
This composition ensures excellent durability in both oxidizing and reducing environments.

904L Stainless Steel Sheet & Plates Mechanical Properties

Beyond corrosion resistance, 904L offers solid mechanical performance under stress:

Grade Tensile strength (MPa) Yield Strength 0.2% Proof(MPa) Elongation (% in 50mm) Hardness – Brinell
904L 490 220 36 70-150
These attributes make 904L suitable for both structural and process equipment.

Stainless Steel 904L Plates & SS 904L Sheets Equivalent Grade :

STANDARD WERKSTOFF NR. UNS JIS BS EN EURONORM NAME
SS 904L 1.4539 N08904 904S13 X1NiCrMoCuN25-20-5

Types Of Stainless Steel 904L Plates & Sheets :

Stainless Steel 904L Plates SS 904L plates
Stainless Steel 904L Plates SS 904L ASTM A240 Plates Exporter
Stainless Steel 904L Chequered Plate ASTM A240 SS 904L Plates Supplier
DIN 1.4539 SS Diamond Chequered Plate 904L SS Plates Manufacturers
UNS N08904 SS Plate Stockholder Cold Rolled Stainless Steel 904L Plates
Stainless Steel Plate 2B Finish Dealer 904L Finish Stainless Steel Plates
Cut to Size Stainless Steel 904L Plates Hot Rolled Stainless Steel 904L Plates
Stainless Steel 904L CR Plates Stockist Stainless Steel 904L HR Plates Dealer
Leading Manufacturer Of Stainless Steel 904L Plates ASTM A240 High Quality SS 904L Plates,
ASME SA 240 SS 904L Plates Distributors 904L Stainless Steel Plates Exporter

Applications of Stainless Steel 904L Plates & Sheets

Industries requiring outstanding corrosion resistance usually use stainless steel 904L:
  • Chemical Processing: Ideal for control of sulphuric and phosphorous acids in reactors, heat exchangers, and storage tanks.
  • Oil & Gas: Utilised in equipment and offshore platforms that are subjected to seawater and sour gas.
  • Marine Engineering: Great for maritime hardware, desalination facilities, and seawater cooling systems.
  • Power Generation: preferred for parts used in condensers and flue gas desulfurization (FGD) systems.
  • Pharmaceuticals: appropriate for corrosive processing agents in sterile settings.
  • Pulp & Paper: Utilised in the treatment of caustic liquor in bleaching plants.

Key Advantages of Stainless Steel 904L

One well-known high-performance alloy meant for rather severe situations is stainless steel 904L. Its special mix makes it perfect for sectors demanding not just high dependability but also long-term durability. 904L lowers maintenance requirements for high-temperature use, marine applications, chemical processing, and other uses while nevertheless providing consistent performance.

Major Benefits of Using Stainless Steel 904L:

  • Excellent Corrosion Resistance: Clearly opposes both general and localised forms of corrosion including pitting and crevice corrosion even in difficult situations.
  • Excellent Weldability & Fabrication: Using traditional techniques without risk of sensitizing, can be easily shaped and welded depending on low carbon content.
  • Impressive High Temperature Performance: Remaining strength and corrosion resistance at rather high temperatures is impressive high-temperature performance.
  • Superior Stress Corrosion Cracking Resistance: Strong resistance against chloride-induced stress corrosion cracking (SCC) makes this material fit for maritime and chemical processing systems.
  • Non Magnetic In Annealed State: Because of its entirely austenitic structure—which is essential for many uses—904L remains non-magnetic in Annealed State.
  • Minimal Maintenance Requirements: Less replacements and repairs resulting from its durability helps to save long-term costs.

How to Select the Right 904L Product

Choosing the right Stainless Steel 904L product will allow one to acquire corrosion resistance, durability, and performance in demanding industrial applications. Choosing for a marine, chemical, or high-temperature application guarantees long term success and economy depending on relevant criteria. Summed here are the main elements to take into account while choosing the best 904L material:

Key Considerations for Selecting the Right 904L Product:

  • Service Environment: Assess exposure to corrosive substances, operating temperature, and pressure levels.
  • Product Form: Select from available forms such as plate, sheet, pipe, tube, or bar based on application needs.
  • Dimensions: Confirm the required thickness, width, and length to match project specifications.
  • Surface Finish: Choose the appropriate finish (No. 1, 2B, BA, No. 4, or Mirror) for functional or aesthetic requirements.
  • Standards & Certification: Ensure compliance with standards like ASTM and EN; request Mill Test Certificates (MTCs) when needed.
  • Supplier Reputation: Work with trusted suppliers who offer quality assurance, proper documentation, and reliable customer support.

Where to Buy Stainless Steel 904L Plates & Sheets

Globally certified, totally traceable, and with outstanding service, at Lakshay Steel we offer the top grade Stainless Steel 904L Plates & Sheets. Being a reputable industry leader, we make sure every one of our goods satisfies ASTM and EN; we also provide Mill Test Certificates (MTCs) with every order for best clarity.

To satisfy the numerous needs of many different sectors, our large inventory consists in finishes, thicknesses, and sizes over a range. Stressing technical guidance, quality assurance, and reasonable cost, we assist our customers in selecting the best fit for their particular requirement.

Frequently Asked Questions (FAQs)

What is Stainless Steel 904L used for?

Stainless Steel 904L is much used in sectors including chemical processing, maritime engineering, pharmaceuticals, oil and gas. Given their remarkable resistance to corrosion and high temperature tolerance, heat exchangers, condensers, storage tanks, and process equipment all find their fit.

What is the difference between 904L and 316L stainless steel?

The alloy makeup is the primary variation. 904L includes higher quantities of nickel, molybdenum, and copper compared to 316L, offering superior corrosion resistance, especially in severe conditions like sulfuric acid. For aggressive chemical uses, it’s generally selected over 316L

Are Stainless Steel 904L plates and sheets weldable?

 Indeed, 904L plates and sheets show outstanding weldability. Without pre-heating or post-weld heat treatment, they can be welded with common techniques including TIG, MIG, and SMAW.

What surface finishes are available for 904L plates and sheets?

Common finishes are mirror, 2B (cold rolled, annealed & pickled), BA (bright annealed), No. 1 (hot rolled, annealed & pickled). Applications and aesthetic criteria determine the surface finish choice.

Is 904L stainless steel magnetic?

Because of its austenitic structure, which makes Stainless Steel 904L non-magnetic in the annealed state, it is suited for uses needing low magnetic permeability.

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