Adinox Overseas is a prominent supplier and exporter of premium Alloy 20 Tubes, also referred to as Carpenter 20, which is particularly well suited to work in corrosive conditions. It is classified as UNS N08020 and is made as per ASTM B729. Alloy 20 is an austenitic nickel-chromium alloy with iron and additions of copper and molybdenum. Alloy 20 is suitable for use in chemical, pharma, food processing, and marine applications where resistance is needed against sulfuric acid as well as against corrosion caused by chlorides.

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Our Alloy 20 tubing is highly esteemed for its enhanced resistance to pitting, crevice corrosion, intergranular corrosion, and stress corrosion cracking. It possesses good mechanical properties and stability at high temperatures, and thus is a sought-after material in heat exchangers, condensers, process piping, and pressure vessels. We at Adinox Overseas supply these tubes in seamless, welded, and ERW types, strictly as per industry standards and customers’ specifications.

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Our Alloy 20 Seamless Pipes feature excellent mechanical strength, high resistance to corrosion, durability, dimensional tolerance, flexibility, and surface quality. This product line is well-suited to satisfy the quality needs of different manufacturing processes, such as chemical processing and petrochemical industries, power plants, among others. These products are capable of withstanding extreme working conditions and will demonstrate unmatched reliability and performance.

The distinct formulation of Alloy 20 Tubes consists of about 35% nickel, 20% chromium, 3-4% copper, and molybdenum, which collectively provide the alloy with its corrosion-resistant properties in corrosive environments, especially against sulfuric acid. The tubes excel in both oxidizing and reducing conditions with a well-balanced between cost and performance as against other nickel-based alloys.

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At Adinox Overseas, our ASTM B729 Alloy 20 Seamless Tubes are carefully manufactured with the latest technologies to create a seamless inside surface, ensuring dimensional accuracy to the highest standards, as well as added strength. Seamless tubes are the best for applications that demand superior pressure resistance and resistance to leakage. We also offer Alloy 20 welded tubes which are suitable for lower to medium pressures, providing high performance at a cost-effective level.

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Specifications Of Alloy 20 Tubes

Specifications	ASTM B 165 ASME SB 165 / ASTM B 725 ASME SB 725
Dimensions	ASTM, ASME and API
Size	15″NB TO 150″NB IN
Specialized in	Large Diameter Size
Range	6.35 mm OD upto 254 mm OD in 0.6 TO 20 mm thickness.
Type	Seamless / ERW / Welded / Fabricated
Form	Round, Hydraulic Etc
Length	Single Random, Double Random & Cut Length.
End	Plain End, Beveled End, Treaded

Chemical Composition for Alloy 20 Tubes

Grade	Ni	C	Mn	P	S	Si	Cr	Nb	Mo	Cu
Alloy 20	32 - 38	0.02 max	1 - 2	0.02 max	0.005 max	0.7 max	19 - 21	0.1 - 0.3	2 - 3	3 - 4

Mechanical Properties Of Alloy 20 Tubes

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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