NM450 equivalent astm material equivalent
The ASTM A532 specification is typically used for steel castings used in various wear-resistant and impact-resistant applications, such as bucket teeth and excavator blades. The steel alloy is classified into three separate types, each with slightly different properties. Type I is an austenitic chromium-molybdenum-nickel alloy steel that offers good mechanical properties and wear resistance. Type II is an austenitic-nickel alloy steel that has a good wear resistance and high toughness. Type III is a ferritic chromium alloy steel with a wear resistance that is lower than that of type I but higher than type II.All three types of steel comply with the ASTM A532 standard and have different chemical compositions. Type I has chromium, molybdenum, and nickel as the primary alloying elements, and also manganese, silicon, phosphorus, and sulfur. On the other hand, Type II is comprised of nickel, chromium and molybdenum, while Type III has chromium and phosphorus as the main alloying elements. Furthermore, these alloy steels can be heat treated to produce different mechanical properties, thus allowing greater flexibility during the manufacturing process.
The ASTM A532 standard determines various testing procedures that must be followed to ensure that the steel meets the necessary criteria. These include tension and impact tests, hardness tests, and inspection and non-destructive tests. Since wear-resistance is one of the key properties of this steel, some wear testing procedures may also be carried out.
The cast components of the steel are used for various applications in the construction and mining industries. Bucket teeth, excavator blades, and other wear-resistant parts are all made from ASTM A532 steel that has been suitably heat treated to provide the desired property profile.
This type of steel is also used for other components where wear-resistance and impact-resistance are key properties. For example, it is sometimes used to make plough shovels and cutting edges for other agricultural machinery.
Overall, the ASTM A532 standard is a very useful specification for steel alloy components that require wear-resistance and toughness. It allows manufacturers to produce a range of parts with various mechanical properties, enabling them to meet the requirements of specific applications.
