Alloy 20 Pipes & Tubes, also known as Carpenter 20, are one of the most versatile and corrosion-resistant austenitic nickel-iron-chromium alloys with additions of copper and molybdenum. At Neonox Overseas, we manufacture, stock, and export high-quality Alloy 20 Seamless Pipes, Welded Pipes, ERW Pipes, and Fabricated Tubes that meet international standards such as ASTM B729, ASTM B464, ASTM B468, and equivalent ASME specifications. The alloy is specifically designed to resist sulfuric acid, phosphoric acid, nitric acid, and chloride stress corrosion cracking, making it highly demanded in chemical and petrochemical industries.
The presence of nickel in Alloy 20 enhances its resistance to stress-corrosion cracking, while chromium provides excellent oxidation resistance. Copper improves performance in sulfuric acid environments, and molybdenum increases resistance to localized pitting and crevice corrosion. Due to this unique composition, Alloy 20 Pipes & Tubes are widely used in industries where harsh acidic environments are present. These include applications in food processing, chemical plants, power generation, pharmaceuticals, and marine environments.
At Neonox Overseas, we supply Alloy 20 Pipes & Tubes in various forms such as seamless, welded, ERW, and fabricated to suit different industrial needs. The seamless pipes offer high mechanical strength and leak-proof performance, making them ideal for high-pressure applications. Welded pipes provide excellent corrosion resistance and are cost-effective for general industrial use. ERW (Electric Resistance Welded) pipes are preferred for medium-duty applications, while fabricated tubes are customized according to specific project requirements.
We supply Alloy 20 Pipes & Tubes in a wide range of sizes, wall thicknesses, and custom cut lengths as per client specifications. The outer diameter typically ranges from 6 mm to 610 mm, with wall thickness varying from 0.5 mm to 50 mm. These tubes are available in both plain end, beveled end, and threaded end finishes. The alloy offers excellent mechanical properties, including a minimum tensile strength of 620 MPa, yield strength of 300 MPa, elongation of 30%, and Brinell hardness around 225 HB. The density is 8.08 g/cm³, and the melting point is approximately 1443°C.
One of the major advantages of Alloy 20 is its ability to resist intergranular corrosion even after welding, which makes it highly reliable for pressure vessels and heat exchanger applications. The alloy is also known for its easy fabrication, good weldability, and durability, ensuring long service life and reduced maintenance costs. Neonox Overseas ensures strict quality control and compliance with ASTM, ASME, DIN, and EN standards to deliver reliable and performance-driven Alloy 20 Pipes & Tubes globally.
With a strong distribution network and export capabilities, Neonox Overseas supplies Alloy 20 Pipes & Tubes across Asia, Europe, the Middle East, Africa, and the Americas. Our products are widely trusted in oil refineries, power plants, chemical processing units, and marine engineering. By choosing Neonox Overseas as your Alloy 20 supplier, you are assured of unmatched quality, timely delivery, and superior customer support.
| Property | Specification |
|---|---|
| Material | Alloy 20 (Carpenter 20, UNS N08020, WNR 2.4660) |
| Standards | ASTM B729, ASTM B464, ASTM B468, ASTM B463, ASME SB729, SB464, SB468 |
| Types Available | Seamless Pipes, Welded Pipes, ERW Pipes, Fabricated Tubes |
| Forms | Round, Square, Rectangular, Hydraulic, Custom Fabricated |
| Outer Diameter (OD) | 6 mm to 610 mm |
| Wall Thickness | 0.5 mm to 50 mm |
| Length | Single Random, Double Random, Custom Cut Lengths (up to 12 meters) |
| End Finish | Plain End, Beveled End, Threaded |
| Density | 8.08 g/cm³ |
| Melting Point | ~1443 °C |
| Tensile Strength | 620 MPa min |
| Yield Strength (0.2%) | 300 MPa min |
| Elongation | 30% min |
| Hardness | 225 HB max |
| Corrosion Resistance | Excellent resistance to sulfuric acid, phosphoric acid, nitric acid, pitting and crevice corrosion |
| Weldability | Good – Suitable for most welding techniques |
| Applications | Chemical Processing, Food Processing, Petrochemicals, Power Generation, Marine Engineering, Pharmaceuticals |
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