ASTM B462 Alloy 20 Flange - Manufacturer of UNS N08020 Square Flange, Flat Flange in India

Supplier of Alloy 20 Tongue & Groove Flange, High Hub Blind Flange | werkstoff no 2.4660 Ring Type Joint Flange, Spade and Ring Spacer Flange At Best Price - 1/2” NPS to 24” NPS

Prime Steel is a trusted supplier specializing in Alloy 20 flanges. Renowned for their commitment to quality and reliability, We provide a wide range of flanges tailored to meet industrial needs. Alloy 20, known for its exceptional corrosion resistance, makes these flanges ideal for various applications, including chemical processing and petrochemical industries. With Our dedication to customer satisfaction, clients can expect top-notch products that ensure efficient and long-lasting performance in corrosive environments.

Product Details

  • Type: Flanged Pipe Fittings

  • Material: Nickel Alloy

  • ASTM: B462 / SB462

  • Grade: Alloy 20

  • UNS: UNS N08020

  • WNR: 2.4660

  • AFNOR / EN :Z2NCUD31-20AZ / NiCr20CuMo

Specifications of Alloy 20 Ring Spacer Flange

Standards 01

ASTM B462 / ASME SB462 Alloy 20



Size range 02

15mm ( 1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12

Flange Face Type 03

FF—Flat Face, RF—Raised Face, FM—Female Face, M—Male Face, T—Tongue Face, G—Groove Face, RJ—Ring Joint.

DIMENSIONS 04

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN

Class 05

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.

APPLICATIONS 06

Chemical Processing, Oil and Gas Industry, Petrochemical Industry

ASTM B462 Alloy 20 Flange

Alloy 20 flanges are integral components in industries where corrosion resistance is crucial. Constructed from Alloy 20, a nickel-iron-chromium alloy with additions of copper and molybdenum, these flanges offer outstanding resistance to a wide range of corrosive environments, including sulfuric acid, phosphoric acid, and chloride-containing media.

The robust construction of Alloy 20 flanges ensures long-term performance even in challenging conditions. They are available in different sizes, pressure ratings, and configurations to suit specific project requirements. Whether for high-temperature or high-pressure applications, Alloy 20 flanges provide dependable sealing and connection solutions, making them essential components in critical piping systems.

Types of Alloy 20 Flanges

Check ANSI/ASME B16.5, B 16.47 Series A & B, B16.48 Flange Dimensions Download

Equivalent Grades of Alloy 20 Reducing Flange

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
Alloy 20 N08020 2.4660 Z2NCUD31-20AZ NiCr20CuMo

Chemical Composition of Alloy 20 Flat Flange

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 3.0-4.0  32.0-38.0 19.0-21.0  29.85 min*  2.0-3.0  0.045 max

Mechanical Properties of Alloy 20 Forged Flange

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
 8.1 g/cm3  1443 °C (2430 °F) Psi -80,000, MPa -551 Psi – 35,000, MPa – 241 30%
Alloy 20 flanges come in various types, including weld neck, slip-on, blind, socket weld, and threaded flanges. Each type has specific applications and installation requirements.
Alloy 20 flanges are widely used in industries such as chemical processing, petrochemicals, pharmaceuticals, food processing, and marine applications. They are chosen for their excellent corrosion resistance and durability.
The advantages of Alloy 20 flanges include exceptional corrosion resistance, high mechanical strength, resistance to stress corrosion cracking, and suitability for high-temperature and high-pressure applications.

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