ASTM A182 GR F44 SORF Flange Supplier, contact us to get free quote and sample!
ASTM A182 GR F44 is a specification for a super austenitic stainless steel flange with high corrosion resistance, particularly in chloride environments. The "SORF" stands for Slip-On Raised Face, which describes the type of flange and its face design. These flanges are commonly used in high-performance applications in the chemical processing, petrochemical, and marine industries.
Material Description
ASTM A182 F44 is also known as UNS S31254, 1.4547 or 6Mo stainless steel. It is a highly alloyed stainless steel that provides excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. The high molybdenum content in this alloy contributes to its exceptional performance in harsh environments.
ASTM A182 GR F44 (UNS S31254) Chemical Composition
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 19.5-20.5 |
| Nickel (Ni) | 17.5-18.5 |
| Molybdenum (Mo) | 6.0-6.5 |
| Copper (Cu) | 0.5-1.0 |
| Nitrogen (N) | 0.18-0.22 |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.8 max |
| Carbon (C) | 0.020 max |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.010 max |
| Iron (Fe) | Balance |
ASTM A182 GR F44 (UNS S31254) Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 650 MPa (94 ksi) minimum |
| Yield Strength (0.2% offset) | 300 MPa (44 ksi) minimum |
| Elongation | 35% minimum |
| Hardness | 95 HRB max |
Features and Structure of SORF Flange
Slip-On:
SORF flanges are designed to be slid onto the end of the pipe and then fixed to the pipe by welding. They are usually lightweight and easy to install and adjust.
Raised Face:
Raised Face means that the flange sealing surface is slightly raised above the bolt circle surface, which helps to better seal the gap between the flange and the gasket, thereby reducing the possibility of leakage.
Flange Structure:
The typical structure of SORF flange includes a sliding end with the inner diameter of the pipe end matching the outer diameter of the flange, which is usually welded to the pipe. The sealing surface around the bolt circle surface usually has a certain height of protrusion, called a raised face, which is used to place the gasket to provide a seal.
A182 F44 6MO Flanges Suppliers
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