A358 GR 904L

904L Pipes, Stainless Steel Pipes, Corrosion-Resistant Pipes, High-Performance Pipes, EFW Pipes

Kwality Steelage Pvt. Ltd., a distinguished manufacturer, supplier, and exporter based in Mumbai, India, offers A358 GR 904L Stainless Steel Pipes designed for high-performance applications requiring superior corrosion resistance and strength. These pipes are fabricated using advanced Electric Fusion Welding (EFW) processes, making them ideal for handling aggressive environments, including chemical processing, seawater systems, and high-chloride settings.

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A358 GR 904L

A358 GR 904L pipes are available in sizes ranging from 6 inches to 60 inches nominal bore (NB) with wall thickness options adhering to schedules such as SCH 10, SCH 40, SCH 80, and SCH XXS. The exceptional mechanical properties include a tensile strength of 490 MPa and a minimum yield strength of 220 MPa, ensuring high durability and performance under extreme conditions. With a high nickel (23-28%) and molybdenum (4-5%) content, A358 GR 904L offers outstanding resistance to pitting and crevice corrosion, particularly in chloride-rich environments.

The chemical composition features a carefully balanced blend of chromium (19-23%), nickel, and molybdenum, along with trace amounts of copper and nitrogen, enhancing its ability to withstand acidic environments like sulfuric and phosphoric acids. These pipes are available in various forms, including round, square, and rectangular, with end finishes such as plain, beveled, and threaded. Surface treatments, including polished, pickled, and passivated finishes, further enhance their corrosion resistance and durability.

Dimensional tolerances for A358 GR 904L pipes are meticulously maintained, with an outside diameter variation of ±1% and wall thickness tolerances of +12.5%/-10%. The manufacturing process incorporates heat treatments such as solution annealing at 1095-1175°C, ensuring optimal mechanical properties and corrosion resistance. Rigorous testing methods, including ultrasonic, hydrostatic, and intergranular corrosion tests, guarantee compliance with international standards.

With a strong commitment to quality and timely delivery, Kwality Steelage Pvt. Ltd. has earned a reputation for excellence across global markets, including Europe, the Middle East, and Southeast Asia. Contact us today to explore our range of A358 GR 904L Stainless Steel Pipes and find a solution tailored to your industrial requirements.

Specification Chart for A358 GR 904L Stainless Steel Pipes

Specification Details
Size Range 6 to 60 inches NB
Wall Thickness Range SCH 10, SCH 40, SCH 80, SCH XXS
Applications Chemical Processing, Desalination Plants, High-Chloride Environments, Pulp and Paper Industries
Pipe Type Electric Fusion Welded (EFW)
Pipe Form Round, Square, Rectangular
Manufacturing Process Heat-Treated (Solution Annealed), EFW Fabrication
Material Composition 19-23% Chromium, 23-28% Nickel, 4-5% Molybdenum, Trace Copper
End Type Plain, Beveled, Threaded
Surface Finish Pickled, Polished, Passivated
Length Options Single Random, Double Random, Custom Lengths

Dimensional Tolerances for A358 GR 904L Stainless Steel Pipes

Tolerance Type Outside Diameter (OD) Wall Thickness (WT)
Size Tolerance ±1% of specified OD +12.5% / -10% of specified WT

Mechanical Properties of A358 GR 904L Pipes

Grade Yield Strength (Min) Tensile Strength (Min) Elongation (%)
904L 220 MPa 490 MPa 35%

Chemical Composition of A358 GR 904L Pipes

Element Maximum % Composition
Carbon (C) 0.02% max
Manganese (Mn) 2.00% max
Phosphorus (P) 0.045% max
Sulfur (S) 0.035% max
Silicon (Si) 1.00% max
Chromium (Cr) 19-23%
Nickel (Ni) 23-28%
Molybdenum (Mo) 4-5%
Copper (Cu) 1.0-2.0%

Price Range (per Metric Ton)

Pipe Type Price Range (USD)
A358 GR 904L Stainless Steel Pipes $7,200 – $9,800

Welding and Heat Treatment for A358 GR 904L Pipes

A358 GR 904L Stainless Steel Pipes are manufactured using advanced EFW processes with solution annealing at 1095-1175°C to enhance mechanical and corrosion resistance properties. Proper welding procedures must be followed, including the use of filler materials that match the composition of the base metal, ensuring robust weld integrity and performance in aggressive environments.

Differences Between A358 GR 904L and GR 316L Pipes

Feature GR 904L GR 316L
Nickel Content Higher (23-28%) Lower (10-14%)
Molybdenum Content Higher (4-5%) Moderate (2-3%)
Corrosion Resistance Excellent in Chlorides Moderate
Applications Aggressive Environments General Applications

Choose A358 GR 904L Stainless Steel Pipes from Kwality Steelage Pvt. Ltd. for unmatched corrosion resistance and durability. Backed by rigorous quality standards and global certifications, our pipes are the ideal choice for challenging industrial environments. Contact us now for tailored solutions!