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ASTM B462 - Flange

Inconel, Monel, Hastelloy and Nickel Alloy Flanges.

ASTM B462 Flanges Standards And Specifications

ASTM B462 specification covers UNS N08020 Flanges for Corrosive High-Temperature Services.

ASTM B462 - Flanges

ASTM B462 Flange

ASTM A182 flange offer users a combination of nickel, chromium, molybdenum, and copper which provides good general corrosion resistance. Alloy 20 flanges are best suited for mid-range corrosion use better than steel alloys. Alloy 20 was designed specifically to withstand the harsh environment of hot sulfuric acid but also performs well in a variety of other acids. Alloy 20 flanges are an ideal choice when you don’t need the corrosion resistance power and price-tag of high performance nickel alloys like Hastelloy C276; but you need something that will give you more protection than 316 stainless steel or even a Super Duplex 2507 stainless steel.

Scope And Manufacturing

ASTM B462 specification refers to Alloy 20 Flanges intended for corrosive high temperature service. A sufficient discard shall be made from each ingot to secure freedom from injurious piping and undue segregation. Requirements for forging (done by hammering, pressing, rolling, extruding, or upsetting), hot working, and heat treatment are detailed. The material shall conform to the chemical composition prescribed for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, copper, columbium, tantalum, nitrogen, iron, cobalt, tungsten, vanadium, titanium, zirconium, aluminum, yttrium, and cerium. The material shall meet the requirements specified for the mechanical properties including tensile strength, yield strength, and elongation. The forgings shall conform to the specified sizes and shapes.

Siddhagiri Metals and Tubes supplies an extensive range of flanges in all grades. Flanges supplied by us are industry standard approved and certified. Have major applications in Oil, Gas, Petrochemical, Ship-Building, Marine, Food, Dairy, Railways and other associated industries. Few of the major brands we represent are Nippon, Sumitomo, Outokumpu, Sandvik etc. Our materials are approved by Saudi ARAMCO.


ASTM B462 specification covers forged or rolled Alloy 20 pipe flanges, intended for corrosive high-temperature service.
Other Names : ASTM B462 UNS N08020, Alloy 20 Flange, Carpenter 20 Flange, Nickel Alloy 20 Flange.
Material : Alloy 20
Brand : Siddhagiri Metals and Tubes
Manufacturer : Siddhagiri Metals and Tubes
Rating : 4.0/5 based on 60 customer reviews

Our Inventory of ASTM B462 Material

  • ASTM A182 UNS N08020