Alloy 31

Overview of Alloy 31

Other common names: W.Nr.1.4562, UNS N08031

Alloy 31 is an iron-nickel-chromium-molybdenum alloy with relatively low cost and high corrosion resistance. Nitrogen and copper are added to this alloy element, and its performance is between special alloy austenitic stainless steel and existing nickel-based alloys.  Alloy 31 has excellent general corrosion resistance to alkaline and halide-containing media, sulfuric acid, phosphoric acid, chlorine dioxide media, nitric acid, and reducing and oxidizing media. It also has excellent resistance to intergranular corrosion, pitting corrosion, and crevice resistance. Corrosion and stress corrosion resistance and other local corrosion performance. This alloy has good cold and hot workability, formability, welding performance, high strength, and good plasticity. It is one of the iron-nickel-based corrosion-resistant alloys with the best overall performance.

Alloy 31 is known as the "advanced 6 Mo-alloy" and is a version with higher chromium and nickel content, which can significantly improve the corrosion resistance in various media. Its local corrosion resistance is better than many alloys, including Ni-Cr-Mo alloy 625, and its uniform corrosion resistance in sulfuric acid in the medium concentration range is better than alloy C-276 and alloy 20.

Features of Alloy 31

● Excellent corrosion resistance in alkaline and acid halide media

● Wide operating temperature

● Excellent resistance to chlorine dioxide media

● Good resistance to stress corrosion cracking

● Excellent workability, weldability, and good thermal stability

● It has good corrosion resistance in phosphoric acid, boiling nitric acid, and sulfuric acid of any concentration

Forms of Alloy 31

We can provide various forms of Alloy 31 according to your customization, such as follows:

Specification of Alloy 31

Applications of Alloy 31

Alloy 31 is widely used in chemical and petrochemical, environmental engineering, marine industry, pharmaceutical pipelines, oil, and natural gas extraction, and other fields, and is commonly used in the following scenarios:

● Flue gas desulfurization system

● Fine Chemicals

● Organic acid and ester synthesis, pipelines and pipe fittings in acid gas production, waste acid recovery equipment

● Ore processing and high pressure of laterite ore

● Sulfuric acid pickling equipment, sulfuric acid cooler

● Evaporation and crystallization of salt

● Equipment for the production of phosphoric acid by wet digestion

● Pipes, heat exchangers, coolers containing seawater and brackish water

Supplier of Alloy 31

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 Alloy 31 prices, you can also send emails to sales@wudenalloy.com, Wudenalloy is your trusted supplier of special alloy material.