Leading Stainless Steel 904L Sheet Manufacturer in India | SS 904L Sheets

In today’s fast-evolving industrial environment, materials that can withstand harsh conditions while maintaining structural integrity are in high demand. Among them, Stainless Steel 904L Sheets stand out for their superior corrosion resistance, durability, and long service life. As a trusted Stainless Steel 904L Sheet Manufacturer, we deliver high-performance sheets engineered to meet international standards and demanding industry needs.

What is Stainless Steel 904L?

Stainless Steel 904L is an austenitic stainless steel grade developed to resist corrosion in highly acidic and chloride-rich environments. It contains high levels of nickel (around 25%) and molybdenum (about 4.5%), along with additions of copper and low carbon content.

This unique composition gives the alloy excellent resistance to reducing acids such as sulfuric acid and protection against chloride stress corrosion cracking. Unlike standard grades such as 316L or 317L, 904L provides a longer service life in environments where corrosion is a constant challenge.

Chemical Composition of Stainless Steel 904L

This balanced chemistry gives the 904L grade superior corrosion resistance and mechanical properties compared to other stainless steels.

Properties of Stainless Steel 904L Sheets

As a reputed SS 904L Sheet Manufacturer, we ensure each sheet demonstrates the following key characteristics:

1. Superior Corrosion Resistance:
   904L offers outstanding protection against oxidizing and reducing acids such as sulfuric, phosphoric, and acetic acids.

2. Resistance to Chloride Attack:
   The high nickel and molybdenum content prevents pitting and crevice corrosion in chloride-rich conditions, such as seawater exposure.

3. High Mechanical Strength:
   It maintains good tensile strength and toughness across a wide temperature range, even at sub-zero levels.

4. Excellent Formability and Weldability:
   904L sheets are easy to form, bend, and weld using common industrial techniques.

5. Non-Magnetic in Annealed Condition:
   This property is valuable for use in equipment where magnetic interference must be avoided.

6. Low Maintenance and Long Service Life:
   The smooth surface and corrosion resistance ensure minimal maintenance and a longer lifespan.

Manufacturing Process of Stainless Steel 904L Sheets

Producing high-quality 904L stainless steel sheets requires a combination of advanced technology, precision engineering, and stringent quality control. Here’s an overview of the process we follow:

1. Raw Material Selection:
   Premium-quality raw materials like nickel, chromium, molybdenum, and iron are sourced from verified suppliers to maintain chemical integrity.

2. Melting and Refining:
   These elements are melted together in an electric arc furnace, ensuring uniform alloying and homogeneity.

3. Casting:
   The molten alloy is cast into slabs or ingots, forming the base for subsequent processing.

4. Hot Rolling:
   The slabs are heated and rolled to reduce thickness and refine the grain structure, improving strength and ductility.

5. Annealing:
   The sheets undergo heat treatment to enhance corrosion resistance and relieve internal stresses formed during rolling.

6. Pickling and Descaling:
   Surface impurities and oxides are removed through chemical treatment, resulting in a clean and smooth surface finish.

7. Cold Rolling:
   The sheets are further rolled at room temperature to achieve exact dimensions and improved surface finish.

8. Surface Finishing and Polishing:
   Various finishes like 2B, BA, or mirror polish are applied based on the end-use requirements.

9. Inspection and Quality Testing:
   Each sheet is thoroughly inspected for dimensional accuracy, mechanical properties, and corrosion resistance before dispatch.

Available Surface Finishes

We manufacture Stainless Steel 904L Sheets in a wide range of finishes suitable for industrial, architectural, and decorative applications:

• 2B Finish: General-purpose cold-rolled finish with a smooth, reflective surface.

• BA Finish (Bright Annealed): Highly reflective, mirror-like finish suitable for clean environments.

• No. 4 Finish: Brushed finish ideal for interiors and decorative applications.

• No. 8 Finish: True mirror polish used in premium architectural projects.

Applications of Stainless Steel 904L Sheets

Due to their superior performance, 904L sheets are widely used across multiple industries. Some key applications include:

• Chemical Processing: For handling corrosive chemicals and acidic solutions in tanks, reactors, and pipelines.

• Oil & Gas Industry: Used in refinery components, heat exchangers, and offshore platforms.

• Marine Industry: Ideal for seawater cooling systems, ship hulls, and coastal equipment.

• Pharmaceutical Industry: Suitable for hygienic and non-contaminating processing equipment.

• Pulp and Paper Industry: Used in digesters, bleaching plants, and chemical recovery units.

• Desalination Plants: Performs efficiently in chloride-laden environments.

• Power Generation: Used in heat exchangers, condensers, and pressure vessels.

Benefits of Using 904L Stainless Steel Sheets

Choosing 904L Stainless Steel Sheets offers significant operational and economic advantages:

• Extended Service Life: 904L lasts longer than standard grades, reducing replacement frequency.

• Low Maintenance Cost: Resistant to rust and scaling, minimizing maintenance expenses.

• Enhanced Safety: Excellent corrosion resistance ensures reliable performance in critical applications.

• Excellent Aesthetic Value: Smooth surface and attractive finishes make it ideal for architectural use.

• Versatile Performance: Performs well under both high temperature and cryogenic conditions.

Quality Standards Followed by Manufacturers

Our Stainless Steel 904L Sheets are manufactured following global standards to ensure reliability and consistency. Common standards include:

• ASTM B625 / ASME SB625

• EN 10088-2

• DIN 1.4539

• JIS N08904

Each sheet is supplied with full material test certificates (MTC) in compliance with EN 10204 3.1/3.2 standards.

Testing Conducted on 904L Sheets

Every batch undergoes extensive testing to ensure mechanical and metallurgical integrity.
Typical tests include:

• Tensile and Hardness Test

• Pitting Resistance Equivalent Number (PREN) Test

• Intergranular Corrosion (IGC) Test

• Ultrasonic and Radiographic Inspection

• Chemical Composition Verification

• Dimensional Accuracy Check

These tests ensure our customers receive defect-free and high-performing materials.

Why Choose Us as Your Stainless Steel 904L Sheet Manufacturer

As one of India’s leading SS 904L Sheet Manufacturers, we have built a reputation for delivering quality, reliability, and value. Here’s why clients across industries trust us:

1. Decades of Expertise: Our technical team brings years of experience in stainless steel manufacturing and engineering.

2. Modern Infrastructure: Equipped with advanced machinery for precision rolling, annealing, and polishing.

3. Global Supply Network: We cater to clients across India, Europe, Asia, and the Middle East.

4. Customized Solutions: Sheets are available in various sizes, thicknesses, and finishes as per project needs.

5. Strict Quality Control: Every stage of production is monitored under strict international quality norms.

6. Competitive Pricing: We combine premium quality with cost-effective pricing to deliver maximum value.

7. On-Time Delivery: Efficient logistics ensure prompt and safe delivery to any global location.

Industries We Serve

Our Stainless Steel 904L Sheets are trusted by multiple industries including:

• Oil and Gas Refineries

• Petrochemical Plants

• Food Processing Units

• Water Treatment Plants

• Construction and Architecture

• Heat Exchanger and Power Plants

Each industry benefits from the corrosion resistance, versatility, and strength that 904L offers.

Maintenance and Handling Tips

To ensure long-term performance of Stainless Steel 904L Sheets, follow these handling practices:

• Avoid contact with carbon steel tools to prevent contamination.

• Use clean, non-abrasive cloths for cleaning and maintenance.

• Store sheets in a dry environment to prevent moisture buildup.

• Always use appropriate welding fillers for joining 904L components.

Conclusion

Stainless Steel 904L Sheets represent the perfect balance between strength, formability, and corrosion resistance. Whether used in chemical plants, marine environments, or architectural structures, these sheets deliver unmatched durability and longevity.