Adinox Overseas is a trusted name in the global industrial supply chain, offering premium quality Alloy 20 Flanges for diverse industrial applications. Designed to meet the most demanding corrosion-resistant needs, these flanges are manufactured in accordance with ASTM B462 standards and are made from UNS N08020 material, also known by its universal standard name, Carpenter 20 or Alloy 20Cb-3®. These flanges are specially engineered to provide superior resistance to acid attack, particularly sulfuric acid, which makes them ideal for chemical processing industries, power plants, marine environments, food processing units, and pharmaceutical manufacturing.

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The Alloy 20 Flanges supplied by Adinox Overseas offer excellent mechanical strength and stability, along with exceptional resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. The nickel, iron, chromium, molybdenum, and copper composition ensures that these flanges perform excellently in acidic and aggressive media. Whether it’s for heat exchangers, reactors, tanks, or piping systems, Alloy 20 is one of the most recommended materials due to its balanced chemistry and durability.

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We at Adinox Overseas ensure each flange goes through rigorous quality checks and testing protocols to meet the highest global quality standards. Every product is supplied with a complete Material Test Certificate and complies with international norms to assure full traceability and authenticity. Our advanced inventory and supply chain capabilities enable us to offer a wide range of sizes and pressure ratings including Class 150, 300, 600, 900, and customized requirements, in types such as Weld Neck, Slip-On, Socket Weld, Blind, Lap Joint, and Threaded.

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Adinox Overseas is committed to delivering precision-engineered flanges that align with your project needs. With an extensive network and global footprint, we have earned our reputation as a leading supplier of corrosion-resistant metal products. Our expertise, fast delivery timelines, and customer-centric approach make us the preferred choice for Alloy 20 piping components.

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Specifications Of Alloy 20 Flanges

Specifications	ASTM A182, A240 / ASME SA182, SA240
Standards	ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges, JIS Flanges, AWWA Flanges etc.
Dimensions	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc
Size Range	1/2" (15 NB) to 48" (1200NB)
Pressure / Class	150#, 300#, 600#, 900#, 1500# & 2500#.
Flange Face Type	Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Chemical Composition for Alloy 20 Flanges

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

Mechanical Properties Of Alloy 20 Flanges

Grade	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 %

Application Of Industries

Power Plants

Aerospace

Refineries

Construction

Oil & Gas

Sugar

Chemical

Petrochemical

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