Alloy 20 Pipe Flanges exhibit excellent resistance to pitting and crevice corrosion in acid and chloride-containing mediums. In addition to niobium, even flanges get stabilized against sensitization, which prevents intergranular corrosion. Mechanical properties of ASME SB462 UNS N08020 Flanges are very good at high temperatures, but combined with that is high fabricability and resistance to SCC.
The ASTM B462 Alloy 20 Blind Flanges have high weldability and formability and therefore find widespread application in different industries. The primary sectors of application of the SB 462 UNS N08020 Flanges are in pharmaceutical, food, and chemical industries, while it is also in wide demand in the plastic industry. In this regard, it has to be noted that the ANSI B16.5 Alloy 20 Plate Flange and Alloy 20 Weld Neck Flanges are envisaged for use in heat exchangers and mixing tanks.
These Alloy 20 Flanges are valued for their flexibility, formability, durability, endurance against heavy loads, and low maintenance properties. Besides Alloy 20 Flanges, Sankalp Alloys Overseas also manufactures and supplies Alloy A286 Flanges, Alloy 28 Flanges, and Alloy 230 Flanges to offer an entire range of high-quality products to meet diversified requirements of the various industries.
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Alloy 20 Flanges Specification
ASTM: ASTM B 564 / ASME SB 564
Dimension Standard: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Size: 1/2″NB TO 60″NB
Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Equivalent Grades Of Alloy 20 Flanges
STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR |
---|---|---|---|---|
Alloy 20 | 2.4660 | N08020 | NiCr20CuMo | Z2NCUD31-20AZ |
Alloy 20 Flanges Chemical Properties
Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
---|---|---|---|---|---|---|---|---|---|---|
Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.00 – 4.00 | 32.00 – 38.00 | 19.00 – 21.00 | 29.85 min* | 2.00 – 3.00 | 0.045 max |
Alloy 20 Flanges Mechanical Properties
Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
---|---|---|---|---|---|
Alloy 20 | 8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi - 35,000, MPa - 241 | 30 % |
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