Silver-Tubes is a reliable industry player involved in the production and supply of various industrial products. We supply high-quality Alloy 20 Pipes & Tubes in different range. Thus, our clients can purchase the same from us at different specifications, dimensions, sizes, types, forms, lengths, ends, etc. We also produce the same at custom made specifications and dimensions based on the product demand we receive from our clients. The product is developed by utilizing the superior quality of Alloy 20 also known as carpenter 20 alloys. Our products are of highest quality standards like ASTM, ASME, and API, ensuring reliability and durability.
Alloy 20 Tube / Tubing / U Tube is manufactured using a nickel-chromium-molybdenum alloy. It has high nickel content of 32-38%. It is used mostly for applications that involve sulfuric acid. silver-tubes is a leading manufacturer and supplier of alloy 20 tubing. Alloy 20 Nickel Tubing contains nickel, chromium, carbon, copper, molybdenum, manganese, silicon, niobium and other elements in its composition. The copper content is Mainly responsible for resistance to sulfuric acid. There are seamless and welded tubes. The UNS N08020 Seamless tube varies from 0.375 inches to 1 inches in outer diameter wherein the welded tube varies from 0.125 inches to 1 inches. Also, the thickness of the wall varies to seamless and welded pipes.
Niobium-stabilized Alloy 20 Pipe, also known as Carpenter 20 or UNS N08020, is designed for excellent corrosion resistance, particularly against sulfuric acid due to its copper content. The Carpenter 20 Pipe UNS N08020 is widely used in industries like chemical, petrochemical, power generation, and plastics. Carpenter 20 B729 Pipe, produced under ASTM B729, is typically supplied in a stabilized annealed condition. As one of the leading Alloy 20 Pipe Manufacturer, we suggest using these pipes in danger of surface degradation and corrosion from salt. Alloy 20 tubing and Alloy 20 welded pipe are highly effective where grade 316 is vulnerable to stress corrosion cracking. The difference between Alloy 20 and Alloy 20CB3 Pipe lies in the CB3 designation, which includes columbium for added stability. We provide competitive pricing for these pipes.
The welded tubes may have wall thickness of between 0.35 inches to 0.109 inches and the seamless ones have up to 0.065 inches wall thickness. The astm b729 alloy 20 tubes fall under the specification of welded pipe. Under annealing, the material's minimum tensile strength is at 551MPa and minimum yield strength is at 241MPa. The 20 seamless alloy tubing has a melting point of 1443 degrees Celsius, which is high. This makes the tubes suitable for high temperature usage. The asme sb 729 Tube is designed to be used in high temperature as well as high pressure tubing. The copper plus the high nickel content enables the tubes to work at high temperatures with high acid contents. At times, the heat exchanger tubes of this grade are referred to as the Alloy 20 U Tube because they are made in the shape of a letter U. To learn more about the product and their prices, please call us.
| Specifications | ASTM B729, B464, B468 / ASME SB729, SB464, SB468 |
| Standard | ASTM, ASME and API |
| Size | 4 to 219 mm W. T.: 0.5 to 20mm |
| Type | Seamless / ERW / Welded / Fabricated |
| Length | Single Random, Double Random & Required Length, Cut Length or As per customer's requirement | Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR |
| Alloy 20 | 2.4660 | N08020 | NiCr20CuMo | Z2NCUD31-20AZ |
| 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 |
| 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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