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Gayatri tubes is expertise in trading and supplying a high array of alloy 20 pipes that have high applications usability and is durable in nature. We provide these alloy pipes in various dimensions and sizes as per the necessity of our customers. Alloy 20 contains chromium-iron-nickel with the addition of amount molybdenum and copper. It also has nitric acids, phosphoric, sulfuric, containing chlorides, crevice corrosion in chemicals, and great resistance to general oxidation. Alloy 20 pipes is highly used in a number of industries such as food processing, pharmaceutical, marine, refining, petrochemical, chemical processing, pharmaceutical equipment, paper & pulp, oil and gas refineries. In addition, its end-use applications such as fasteners and fittings, food processing equipment, valve and pump parts, agitators, mixing tanks, and storage tanks. However, applications are limited to the highest temperature up to 1000 degrees F per ASME.
Alloy 20 has elevated sulfuric acid. However, this alloy grade offers appropriate resistance in an aqueous salt solution, nitric acid, and resistance in phosphoric acid. Alloy 20 is the best choice when chloride stress oxidation crevice is a problem as it resists cracking oxidation and pitting. Alloy 20 ERW pipes are generally used in petroleum processing, chemical, synthetic fibers, and production of plastics, and many more. Alloy 20 seamless pipes contain molybdenum, chromium; nickel stainless steel that protects applications from sulfuric acid and acid attack. Alloy 20 welded pipes provide great oxidation resistance. The alloy 20 EFW pipes contain pitting, crevice corrosion, and resistance to corrosion. However, alloy 20 round pipes are available in a number of sizes and shapes. Alloy 20 square pipes provide pitting, nitric acids, sulfuric, and great resistance to corrosion. Alloy 20 rectangular pipes have niobium, which helps in stabilization. Alloy 20 Seamless Pipes contain great oxidation resistance by high mechanical properties, and it’s easy to fabrication. Moreover, alloy 20 hexagonal pipes are widely used where toughness is required.
We also provide some test that ensures the quality of our product. The test includes mechanical test, intergranular corrosion test (IGC), ultrasonic test, micro test, nondestructive test, chemical test, positive material test (PMI),destructive test, macro test, hardness test, flaring test, flattening test, and more.
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR |
| Alloy 20 | 2.4660 | N08020 | NiCr20CuMo | Z2NCUD31-20AZ |
| Specifications | ASTM B729, B464 / ASME SB729, SB464 |
| Standard | ASTM, ASME and API |
| Dimension Standard | ANSI B36.19M, ANSI B36.10 |
| Size | 15 NB UP TO 600 NB IN SCH 5S, 10S,10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS |
| Length | Single Random, Double Random & Required Length, Cut Length |
| Type | Seamless / ERW / Welded / Fabricated |
| End | Plain End, Beveled End, Treaded |
| 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 % |
