AI-6XN stainless steel is a compound of principally nickel, chromium, and molybdenum which is a very corrosion resistant material. It demonstrates outstanding wear resistance against pitting, crevice corrosions, and stress corrosion cracking and can be a good choice for applications where the environment is extremely tough such as chemical processing, marine, and pharmaceutical industries. The chemical structure of it usually has 24-26% nickel, 20-22% chromium, 6-7% molybdenum, and also contains some small amounts of nitrogen and copper. The choice of steel is not one size fits all, and there are various grades specific to specific applications each bearing slight differences that vary from composition to properties. The online tables and charts showing the property and condition characteristics of the material are a tool for engineers and researchers for making the right decision concerning materials selection and design. The PDF files that are available on the website provide all the data about AI-6XN stainless steel and this allows the product to be incorporated in various industrial sectors.
AI-6XN is the super-austenitic stainless steel having an outstanding resistance to corrosion in very severe environments. Nickel and chromium form the main components that provide additional resistance against pitting, crevice corrosion and also stress corrosion cracking induced by chlorides. The main industries it is used by are petrochemical processing, pulp and paper and marine applications, and it shows outstandingly good mechanical properties even at higher temperatures. Its high alloy percentage implies that it is very durable against corrosion in harsh operating environments. The table of grades reveals the material composition, ease of selection for designers for use in engineering structures for specific applications.
Elements | Ni | Cr | Mo | C | N | Mn | Si | P | S | Cu | Fe |
---|---|---|---|---|---|---|---|---|---|---|---|
Min (%) | 23.5 | 20.00 | 6.0 | - | 0.18 | - | - | - | - | - | - |
Max (%) | 25.5 | 22.00 | 7.00 | 0.03 | 0.25 | 2.0 | 1.0 | 0.40 | 0.03 | 0.75 | Rem |
Advantages:
Excellent corrosion resistance: This material could also resist several corrosive environments such as acids or chlorides.
High strength: Exhibits better strength than some of the most widely-used stainless steel grades.
Good weldability: It is malleable and strong and has good welding properties for applications without affecting the corrosion resistance.
Low carbon content: Reduction of the carbide precipitation which increases the level of intergranular corrosion.
Disadvantages:
Cost: Overall it is more costly in regard to other stainless steel based products.
Limited availability: Distribution can also depend on a specific country or a supplier of a particular type of beverage.
Specialized processing: Due to its composition, it is hard and needs special processing methods in producing the final product.
Sensitivity to hot cracking: Can be vulnerable to hot cracking during welding if essential precaution are not taken into consideration.
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