Stainless Steel 904L Sheets & Plates

Stainless Steel 904L Sheets & Plates Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a leading manufacturer, supplier, stockist, and exporter of premium-quality Stainless Steel 904L Sheets & Plates in Mumbai, India. We specialize in offering high-performance stainless steel products designed for extreme corrosion resistance, superior strength, and long-term durability in aggressive industrial environments.

Our SS 904L sheets and plates are manufactured using top-grade raw materials and advanced processing techniques to ensure accurate thickness, smooth surface finish, excellent mechanical properties, and long service life. We cater to both domestic and international markets, including the USA, Europe, the Middle East, Africa, and Southeast Asia.

With a commitment to quality and reliability, Virami Steel Hub delivers stainless steel solutions that meet global standards and demanding industrial requirements.

What are Stainless Steel 904L Sheets & Plates?

Stainless Steel 904L sheets and plates are super austenitic stainless steel flat products known for their exceptional resistance to strong acids, chlorides, and aggressive chemical environments. SS 904L contains high levels of nickel, chromium, molybdenum, and copper, making it highly resistant to corrosion and pitting.

This grade is specifically designed for applications where standard stainless steels like 316L fail.

Key Functions:

  • Provide superior corrosion resistance
  • Ensure durability in harsh chemical environments
  • Offer excellent strength and reliability
  • Enable fabrication in demanding applications

Chemical Composition of Stainless Steel 904L

SS 904L has a unique composition that enhances corrosion resistance.

Typical Composition:

  • Chromium (Cr): 19% – 23%
  • Nickel (Ni): 23% – 28%
  • Molybdenum (Mo): 4% – 5%
  • Copper (Cu): 1% – 2%
  • Carbon (C): ≤ 0.02%
  • Manganese (Mn): ≤ 2%
  • Silicon (Si): ≤ 1%
  • Iron (Fe): Balance

High nickel and molybdenum content provide excellent resistance to pitting and crevice corrosion.


Key Features of SS 904L Sheets & Plates

Stainless Steel 904L offers several advantages:

  • Excellent Resistance to Strong Acids (Sulfuric, Phosphoric)
  • Superior Resistance to Chloride-Induced Corrosion
  • Outstanding Resistance to Pitting and Crevice Corrosion
  • High Strength and Durability
  • Good Weldability and Fabrication
  • Resistance to Stress Corrosion Cracking
  • Long Service Life in Aggressive Environments

Mechanical Properties

SS 904L provides reliable mechanical performance:

  • Tensile Strength: ~490 MPa
  • Yield Strength: ~220 MPa
  • Elongation: ~35%
  • Hardness: Moderate

These properties ensure durability under mechanical stress.


Physical Properties

  • Density: ~8.0 g/cm³
  • Melting Range: ~1300–1390°C
  • Modulus of Elasticity: ~200 GPa
  • Thermal Conductivity: ~12 W/m•K
  • Thermal Expansion: Moderate

Corrosion Resistance

SS 904L sheets and plates offer exceptional resistance to:

  • Strong acids (sulfuric, phosphoric)
  • Chloride environments
  • Pitting and crevice corrosion
  • Stress corrosion cracking
  • Industrial pollutants

This makes it superior to grades like 316L and even some duplex steels in highly corrosive environments.


Heat Treatment

  • Not hardenable by heat treatment
  • Strength increased through cold working

Annealing Process:

  • Temperature: ~1090–1175°C
  • Rapid cooling

Weldability

SS 904L offers good weldability with proper procedures.

Welding Methods:

  • TIG (GTAW)
  • MIG (GMAW)
  • SMAW

Best Practices:

  • Use suitable filler materials
  • Maintain low heat input
  • Ensure clean surfaces

Machinability

  • Moderate machining difficulty
  • Use carbide tools
  • Maintain controlled speeds
  • Apply coolant

Standards & Specifications

SS 904L sheets and plates are manufactured according to:

  • ASTM A240 – Stainless steel sheets & plates
  • ASTM B625 / B677
  • ASME SA240
  • EN standards

These standards ensure quality and global compatibility.


Sizes & Specifications

  • Thickness: 0.5 mm to 100 mm
  • Width: Up to 2000 mm
  • Length: Custom sizes available

Surface Finish Options:

  • 2B Finish
  • BA (Bright Annealed)
  • Mirror Finish
  • Matte Finish
  • No.1 Finish

Applications of Stainless Steel 904L Sheets & Plates

SS 904L sheets and plates are widely used in industries requiring extreme corrosion resistance.

  • Chemical Processing Industry Used in acid handling equipment.
  • Oil & Gas Industry Used in offshore and corrosive environments.
  • Pharmaceutical Industry Used in sterile processing systems.
  • Power Plants Used in cooling and heat exchanger systems.
  • Marine Industry Used in seawater applications.

Quality Testing & Inspection

Each sheet and plate undergoes strict quality checks:

  • Chemical composition testing
  • Mechanical testing
  • Dimensional inspection
  • Surface quality testing
  • Positive Material Identification (PMI)

Mill Test Certificates (MTC) and third-party inspection reports are provided.


Packaging & Delivery

  • Export-grade packaging
  • Protective wrapping to prevent damage
  • Proper labeling and traceability
  • Safe and timely global delivery

Why Choose Virami Steel Hub?

  • Trusted stainless steel supplier in Mumbai
  • Wide range of grades and sizes
  • Competitive pricing
  • Custom solutions available
  • Compliance with international standards
  • Strong export network
  • Dedicated customer support

Conclusion

Stainless Steel 904L Sheets & Plates are a premium solution for industries requiring exceptional corrosion resistance and durability in aggressive environments. Their superior performance in acidic and chloride-rich conditions makes them ideal for critical industrial applications.

With a strong focus on quality and innovation, Virami Steel Hub delivers SS 904L sheets and plates that ensure long-term performance, reliability, and value.


FAQs – Stainless Steel 904L Sheets & Plates

(1)What is SS 904L used for?

SS 904L is used in chemical processing, oil & gas, pharmaceutical, and marine industries where high corrosion resistance is required.

Yes, SS 904L offers superior resistance to acids and chlorides compared to SS 316L.

Yes, it has excellent resistance to sulfuric acid and other strong acids.

Yes, it offers good weldability using standard welding methods.

Chemical, marine, oil & gas, pharmaceutical, and power industries widely use them.

Yes, it performs well in chloride-rich and seawater environments.

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