The A225/A225M-17 steel grade is a low alloy steel that is primarily used in pressure vessel applications. It is a carbon-manganese-silicon steel that has been normalized and is produced in two different levels of strength.
The chemical composition of A225/A225M-17 steel grade consists of:
– Carbon (C): 0.20% max.
– Manganese (Mn): 0.70-1.00%
– Silicon (Si): 0.15-0.40%
These elements contribute to the overall strength and toughness of the steel. Carbon enhances the strength and hardness, while manganese improves the hardenability and mechanical properties. Silicon helps in deoxidizing the steel and improves its strength and resistivity to corrosion.
The mechanical properties of A225/A225M-17 steel grade vary depending on the strength level. The two different levels are Grade A and Grade B.
– Grade A has a minimum yield strength of 50 ksi (345 MPa) and a minimum tensile strength of 70 ksi (485 MPa).
– Grade B has a minimum yield strength of 60 ksi (415 MPa) and a minimum tensile strength of 80 ksi (550 MPa).
These mechanical properties make A225/A225M-17 steel grade suitable for pressure vessel applications where high strength and toughness are required.
The A225/A225M-17 steel grade is standardized by ASTM International under the standard number A225/A225M-17. This standard specifies the requirements for normalized carbon-manganese-silicon steel plates for pressure vessels, particularly those requiring notch toughness testing.
In terms of applications, A225/A225M-17 steel grade is commonly used in the construction and manufacturing of pressure vessels, boilers, and storage tanks. These applications require materials that can withstand high pressures and temperatures while maintaining their strength and durability.
Overall, A225/A225M-17 steel grade offers good mechanical properties and is well-suited for use in pressure vessel applications. Its chemical composition and standardized specifications make it a reliable choice for industries that require high-strength materials for their equipment.