Stainless Steel 904L Flanges

Stainless Steel 904L Flanges are critical mechanical fasteners used to connect pipes, valves, pumps, and other equipment to form a comprehensive piping system. They facilitate easy cleaning, inspection, or modification of the system. Manufactured from SS 904L, a highly alloyed austenitic stainless steel, these flanges possess exceptional resistance to general corrosion, pitting, and crevice corrosion, especially against non-oxidizing acids like sulfuric and phosphoric acids. This makes them a preferred choice over conventional stainless steel grades in aggressive environments. Zeron Fasteners manufactures and supplies a variety of high-quality SS 904L Flanges, including Weld Neck, Slip-On, Blind, Socket Weld, and Lap Joint types. Their main application is widespread across specialized industries such as chemical processing, power generation, fertilizer plants, pollution control equipment, and seawater handling systems.

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SS 904L Flanges Manufacturer in India

SS 904L Flanges Chemical Composition

Element Composition (%)
Carbon (C) 0.02 max
Manganese (Mn) 2.00 max
Silicon (Si) 1.00 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.035 max
Chromium (Cr) 19.0 - 23.0
Nickel (Ni) 23.0 - 28.0
Molybdenum (Mo) 4.0 - 5.0
Copper (Cu) 1.0 - 2.0

SS 904L Flanges Mechanical Properties

Property Value
Tensile Strength (min) 490 MPa (71,000 psi)
Yield Strength (0.2% Offset, min) 220 MPa (32,000 psi)
Elongation (min) 35%
Hardness (max) 200 HB / 90 HRB
Density 7.95 g/cm³

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