Stainless Steel 904l Plate Flanges

Product Details

Stainless Steel 904L Plate Flanges: A Comprehensive Guide to International Standards and Equivalent Grades

Introduction:
Stainless Steel 904L plate flanges are vital components in various industries due to their corrosion resistance and high-performance characteristics. This article will provide a detailed overview of these plate flanges, covering international standards, equivalent grades, and essential information for buyers and engineers.

Stainless Steel 904L Overview:
Stainless Steel 904L is a super austenitic stainless steel known for its excellent corrosion resistance, especially in aggressive environments. The addition of high levels of nickel and molybdenum enhances its resistance to chloride-induced stress corrosion cracking. These properties make it an ideal material for plate flanges used in industries such as chemical processing, petrochemicals, and pharmaceuticals.

International Standards for Stainless Steel 904L Plate Flanges:
ASTM Standards:
ASTM A182/A182M: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service.
ASTM A240/A240M: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.

EN Standards:
EN 1092-1: Flanges and their joints - Circular flanges for pipes, valves, fittings, and accessories, PN designated - Part 1: Steel flanges.
EN 10028-7: Flat products made of steels for pressure purposes - Part 7: Stainless steels.

ASME Standards:
ASME B16.5: Pipe Flanges and Flanged Fittings.
ASME B16.47: Large Diameter Steel Flanges NPS 26 through NPS 60.

Equivalent Grades of Stainless Steel 904L:
UNS N08904:
This is the unified numbering system designation for Stainless Steel 904L, ensuring consistency across various standards.

WNR 1.4539:
The Werkstoffnummer (WNR) is the German standard for materials numbering, and 1.4539 is the specific number assigned to Stainless Steel 904L.

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Stress Corrosion Cracking
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Conclusion:
Stainless Steel 904L plate flanges adhere to rigorous international standards, ensuring their reliability in demanding industrial applications. Understanding the equivalent grades and standards is crucial for selecting the right materials. When searching for plate flanges, consider manufacturers who prioritize quality and compliance with these international standards to ensure the longevity and performance of your equipment.