Stainless Steel 904L Pipes and Tubes

• Chromium (Cr): 19.0 – 23.0%
• Nickel (Ni): 23.0 – 28.0%
• Molybdenum (Mo): 4.0 – 5.0%
• Copper (Cu): 1.0 – 2.0%
• Carbon (C): ≤ 0.02%
• Manganese (Mn): ≤ 2.0%
• Silicon (Si): ≤ 1.0%
• Phosphorus (P): ≤ 0.045%
• Sulfur (S): ≤ 0.035%
• Iron (Fe): Balance

Role of Alloying Elements

• Chromium: Provides strong resistance to oxidation and general corrosion.
• Nickel: Enhances ductility, toughness, and resistance to stress corrosion cracking.
• Molybdenum: Improves resistance to pitting and crevice corrosion.
• Copper: Enhances resistance to sulfuric acid and other reducing acids.
• Low Carbon Content: Minimizes carbide precipitation during welding.

This composition makes Stainless Steel 904L pipes and tubes ideal for extremely corrosive environments.

Mechanical Properties of Stainless Steel 904L Pipes and Tubes

Stainless Steel 904L offers excellent mechanical strength along with superior corrosion resistance.

• Tensile Strength: ≥ 490 MPa
• Yield Strength: ≥ 220 MPa
• Elongation: ≥ 35%
• Hardness: ≤ 90 HRB

These properties ensure structural integrity under high pressure and temperature conditions in demanding industrial environments.

Physical Properties of Stainless Steel 904L

• Density: 8.0 g/cm³
• Melting Range: 1300 – 1390°C
• Thermal Conductivity: 11.5 W/m·K
• Modulus of Elasticity: 200 GPa
• Electrical Resistivity: 0.95 µΩ·m

The higher density and alloy content contribute to improved corrosion resistance and durability in aggressive environments.

Corrosion Resistance of Stainless Steel 904L Pipes and Tubes

Stainless Steel 904L is specifically designed for harsh and corrosive conditions. It offers:

• Excellent resistance to sulfuric, phosphoric, and acetic acids
• Superior resistance to pitting and crevice corrosion
• Strong resistance to chloride stress corrosion cracking
• Excellent performance in seawater and marine environments
• Good resistance to oxidation at elevated temperatures

Because of these properties, Stainless Steel 904L pipes and tubes are widely used in chemical plants, offshore platforms, and pollution control systems.

Weldability and Fabrication

Stainless Steel 904L pipes and tubes offer good fabrication characteristics despite high alloy content.

• Suitable for TIG, MIG, and arc welding
• No preheating required
• Low carbon content reduces risk of intergranular corrosion
• Good cold forming properties
• Excellent surface finishing capability

Proper welding consumables compatible with 904L grade are recommended to maintain corrosion resistance.

Types of Stainless Steel 904L Pipes and Tubes

Virami Steel Hub supplies Stainless Steel 904L in various forms:

• Seamless Pipes
• Welded Pipes
• ERW Pipes
• Round Tubes
• Square Tubes
• Rectangular Tubes

Available in customized sizes, wall thicknesses, and lengths as per client requirements.

Standards and Specifications

Stainless Steel 904L pipes and tubes are manufactured according to international standards such as:

• ASTM A312
• ASTM A213
• ASTM A249
• ASTM A269
• ASTM A554

These standards ensure dimensional accuracy, mechanical reliability, and corrosion performance.

Surface Finishes Available

We offer Stainless Steel 904L pipes and tubes in various finishes:

• Annealed & Pickled
• 2B Finish
• Polished Finish
• Mirror Finish
• Custom Surface Finish

These finishing options enhance both corrosion resistance and aesthetic appeal.

Applications of Stainless Steel 904L Pipes and Tubes

Chemical & Petrochemical Industry

• Acid processing equipment
• Heat exchangers
• Reactor vessels
• Storage tanks

Oil & Gas Industry

• Offshore piping systems
• Subsea components
• Refinery piping

Marine Industry

• Seawater handling systems
• Shipbuilding components
• Coastal infrastructure

Pharmaceutical & Food Processing

• Hygienic piping systems
• Processing equipment
• High-purity applications

Stainless Steel 904L is especially suitable for industries requiring long-term durability in aggressive environments.

Advantages of Stainless Steel 904L Pipes and Tubes

• Outstanding corrosion resistance
• High resistance to pitting and crevice corrosion
• Excellent performance in acidic environments
• Good weldability and fabrication
• Long service life
• Suitable for extreme industrial conditions

These advantages make Stainless Steel 904L a premium stainless steel choice for critical applications.

Quality Testing and Inspection

At Virami Steel Hub, all Stainless Steel 904L pipes and tubes undergo comprehensive quality checks:

• Chemical composition testing
• Mechanical property testing
• Hydrostatic testing
• PMI (Positive Material Identification) testing
• Dimensional inspection
• Surface finish examination

Mill Test Certificates (MTC) are provided as per ASTM standards. Third-party inspection is available upon request.

Why Choose Virami Steel Hub for Stainless Steel 904L Pipes & Tubes?

• Trusted stainless steel supplier in Mumbai
• Extensive stock of high-alloy stainless steels
• Competitive pricing with global export capability
• Custom sizes and finishes available
• Strict quality control procedures
• On-time delivery and customer-focused service

Conclusion

Stainless Steel 904L Pipes and Tubes are high-alloy stainless steel products designed for superior corrosion resistance in aggressive and acidic environments. With excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, Stainless Steel 904L is ideal for chemical, marine, oil & gas, and industrial applications.

Virami Steel Hub supplies premium-quality Stainless Steel 904L pipes and tubes that meet international standards and demanding industrial requirements. Whether for domestic projects or global export needs, we deliver stainless steel solutions engineered for performance and reliability.