The A291/A291M-17 steel grade is a specific type of steel that has several key properties and applications.
In terms of its chemical composition, the A291/A291M-17 steel grade primarily consists of carbon, manganese, phosphorus, sulfur, and silicon. The carbon content typically ranges from 0.30% to 0.40%, while the manganese content ranges from 0.80% to 1.10%. The phosphorus and sulfur content are both limited to a maximum of 0.040%, while the silicon content is typically around 0.15% to 0.35%.
The mechanical properties of the A291/A291M-17 steel grade are also significant. It has a minimum tensile strength of 77,000 psi (530 MPa) along with a minimum yield strength of 50,000 psi (345 MPa). The steel grade exhibits good toughness, making it suitable for various applications that require high strength and durability.
The A291/A291M-17 steel grade is commonly used in the manufacture of heavy-duty machinery, construction equipment, and mining machinery components. It is also utilized in the production of industrial gears, axles, and shafts due to its excellent strength and wear resistance. Additionally, this steel grade is often employed in the manufacturing of high-stress parts for oil and gas equipment, such as drill collars and couplings.
As for the standard number, A291/A291M-17 refers to the specific ASTM A291/A291M standard for steel forgings, carbon and alloy, for pinions, gears, and shafts. This standard provides guidelines for the chemical composition, mechanical properties, heat treatment, and testing requirements of steel forgings used in various applications.
Overall, the A291/A291M-17 steel grade possesses desirable properties that make it suitable for heavy-duty applications that require high strength and durability. Its chemical composition and mechanical properties are carefully controlled, allowing for consistent and reliable performance in a range of industrial settings.