The chemical composition, mechanical characteristics, weldability, and corrosion/oxidation resistance of Duplex Steel F51 Weld Neck Flanges provide the best all-around performance at a low cost. F51 Threaded Flanges account for more than half of all duplex steel made, 50-60% of duplex material consumption, and implementations in almost every industry.
A pipeline is closed with a blind flange. These high-strength blind flanges are used in high-stress and high-strength installations. Carbon, chromium, manganese, molybdenum, nitrogen, nickel, and phosphorus make up the chemical structure of Duplex F51 flanges. Flanges are commonly used in air pressure systems and valve fixtures. The most flexible and commonly used of all duplex steels are non-magnetic F51 Lap Joint Flanges. F51 Ring Type Joint Flanges are used in high-temperature applications and have a carbon content to reduce carbide precipitation.
The most flexible and commonly used of all duplex steels are non-magnetic F51 Lap Joint Flanges. F51 Ring Type Joint Flanges are used in high-temperature applications and have a carbon content to reduce carbide precipitation Type 302 has greater corrosion resistance than F51 Orifice. Meanwhile, F51 Blind Flanges are corrosion resistant in a variety of conditions and are easily shaped and welded. The chemical, refrigeration, paper, and food processing industries all use Annealed F51 Flanges. In a diverse variety of mildly corrosive conditions, post-weld annealing is not needed to restore the excellent performance of Duplex Steel F51 Spectacle Blind Flanges. The sizes vary from 12 to 48 inches in length. The pressure ratings range from 150 pounds per square inch to 2500 pounds per square inch and beyond. Flanges come in a variety of shapes and sizes, and they’re used in a wide range of applications.
|ASTM A182 F51||S31803||1.4462|
|A182 F51||0.030 max||2.00 max||1.00 max||0.030 max||0.020 max||22.0 – 23.0||3.0 – 3.5||4.50 – 6.50||0.14 – 0.20||63.72 min|
|Yield Strength||Tensile Strength||Elongation||Reduction of Area||Charpy Impact @Rt J||Hardness H B|
|>450Mpa (65KS I)||>620Mpa (90KSI)||25%||45%||100*||270HB* Max|
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