Welcome to the forefront of advanced metallic engineering with our 904L Stainless steel coil. Designed for the most demanding environments, this super-austenitic stainless steel sets the industry benchmark for exceptional resistance to corrosive attack, making it the superior choice over standard 316 and 317L alloys where failure is not an option.

Our 904L coils are precision-manufactured to deliver unmatched performance, longevity, and value in critical applications across the chemical processing, oil and gas, and pharmaceutical industries.

Key Features & Advantages

• Exceptional Corrosion Resistance: The defining characteristic of 904L is its superb resistance to uniform corrosion, particularly in sulfuric acid and phosphoric acid environments. It offers outstanding performance against pitting and crevice corrosion in chloride-containing media, thanks to its high Molybdenum (Mo) and Copper (Cu) content.

• Superior Composition: 904L is a high-alloyed austenitic stainless steel with low carbon content. Its enhanced chemical composition includes elevated levels of Nickel (Ni), Chromium (Cr), Molybdenum (Mo), and Copper (Cu), providing a robust passive layer that withstands aggressive corrodents.

• High Strength & Durability: The austenitic structure, stabilized by its high nickel content, provides excellent toughness and ductility, even at elevated temperatures. This ensures the material can be formed and fabricated into complex components without compromising its structural integrity.

• Excellent Weldability & Fabrication: 904L exhibits good weldability with standard techniques. Its low carbon content minimizes the risk of carbide precipitation during welding, maintaining corrosion resistance in the heat-affected zone (HAZ). It can be readily formed and machined with appropriate tools.

• Long-Term Cost Efficiency: While the initial investment is higher than standard grades, 904L's exceptional durability and resistance to corrosion significantly reduce maintenance costs, downtime, and premature replacement, offering a superior lifetime value and return on investment.

Typical Chemical Composition (Weight %)

Mechanical & Physical Properties (Typical)

• Tensile Strength: ≥ 490 MPa (71 ksi)

• Yield Strength (0.2% Offset): ≥ 220 MPa (32 ksi)

• Elongation: ≥ 35%

• Density: 7.98 g/cm³

• Modulus of Elasticity: 200 GPa

Available Specifications & Finishes

• Standard: UNS N08904 / DIN 1.4539

• Thickness: Custom range available upon request

• Width: Custom slit widths to meet your precise requirements

• Surface Finish: A wide range is available, including:

• 2B (Standard bright cold-rolled finish)

• No. 1 (Hot-rolled, annealed, and pickled)

• BA (Bright Annealed)

• Polished finishes (e.g., Hairline, Mirror)

Primary Applications
Our 904L stainless steel coil is the material of choice for critical components in:

• Chemical Processing: Reactors, tanks, piping, and heat exchangers handling sulfuric, phosphoric, and acetic acids.

• Oil & Gas Industry: Downhole components, piping, and manifolds in sour gas (H₂S) environments and offshore platforms.

• Pollution Control: Scrubbers and ductwork in flue gas desulfurization (FGD) systems.

• Pharmaceutical & Food Processing: Equipment requiring high purity and resistance to corrosive cleaning agents.

• Seawater Applications: Heat exchangers and condenser tubes.