Other common names: UNS N08020, W.Nr.2.4660, Carpenter 20
Alloy 20 is a nickel-iron-chromium austenitic high-temperature alloy containing niobium, molybdenum, and copper. It can also be called alloy 20 stainless steel. Among them, niobium can resist intergranular corrosion, and the combination of various elements can make it suitable for sulfuric acid and phosphoric acid. It maintains the greatest degree of corrosion resistance in nitric acid and 20% to 40% sulfuric acid boiling. The alloy has good resistance to pitting and crevice corrosion. It is usually used to solve chlorine However, it is not recommended to use it at temperatures above 1000°F. Alloy 20 can be formed by hot and cold processing using traditional methods. Niobium enhances stability, minimizes carbide precipitation during welding, and allows the welded structure to be used in corrosive environments, usually without post-weld heat treatment. The alloy was originally designed for use in the sulfuric acid industry, but due to its combination of excellent corrosion resistance, high mechanical properties, and good processability, it has now been widely used in the chemical, petrochemical, food, power generation, and plastic industries.
● Excellent resistance to chloride stress corrosion cracking
● Excellent mechanical properties and processability
● Minimal carbide precipitation during welding, resistance to intergranular corrosion
● Excellent corrosion resistance to sulfuric acid of various concentrations and temperatures
● Good oxidation resistance in environments containing a lot of sulfuric acids, nitric acid, and phosphoric acid
● Excellent stability to the sensitization process
● Resistant to harsh environments, pitting and crevice corrosion
We can provide various forms of Alloy 20 according to your customization, such as follows:
| Incoloy Alloy 20 Bar | Incoloy Alloy 20 Sheet&Plate |
| Incoloy Alloy 20 Welded Pipe&Tube | Incoloy Alloy 20 Seamless Pipe&Tube |
| Incoloy Alloy 20 Pipe Fittings | Incoloy Alloy 20 Fasteners |
| Incoloy Alloy 20 Forgings | Incoloy Alloy 20 Flanges |
| Incoloy Alloy 20 Coil | Incoloy Alloy 20 wire |
| Chemical Composition | ||||||||||
| Fe | C | Cr | Ni | Nb+Ta | Cu | Mo | Mn | Si | P | S |
| Balance | 0.07 Max | 19.0-21.0 | 32.0-38.0 | 8xC-1.0 | 3.0-4.0 | 2.0-3.0 | 2.0 Max | 1.0 Max | 0.045 Max | 0.035 Max |
| Typical Room Temperature Mechanical Properties | ||||
| Tensile Strength | Yield Strength | Elongation | ||
| ksi | Mpa | ksi | Mpa | % |
| 90 | 620 | 45 | 300 | 40 |
Alloy 20 is used in a variety of industries, including chemical processing, petrochemical and refining, marine, pharmaceutical, and food processing. The following are some examples:
● Storage tanks, agitators, pump and valve parts, fasteners, and accessories
● Heat exchangers, mixing tanks, metal cleaning, and pickling equipment, and pipelines
● Synthetic rubber, plastic, synthetic fiber manufacturing equipment
● Chemical process pipelines, reactor vessels
● Bulletproof fiber and aramid manufacturing process equipment
● SO2 scrubber and other harsh environments
Wudenalloy has focused on the production and manufacture of nickel alloys for more than ten years. We are a principal worldwide supplier of corrosion-resistant alloy and other superalloy metals. We have a professional technical team and after-sales service, so we can offer high-quality Hastelloy®, Incoloy®, Inconel®, Monel®, Duplex Stainless Steel and other alloy material. These materials are available in bar, sheet&plate, pipe&tube, flange, forging, and other forms to meet the needs of our customers.
Request a quote now to get the competitive Incoloy Alloy 20 prices, you can also send emails to sales@wudenalloy.com, Wudenalloy is your trusted supplier of special alloy material.