Stainless Steel AISI 347
Stainless steel AISI 347 is one of the most popular stainless steel grades. It is widely used in many applications, including in architectural and automotive applications. This grade is characterized by a high chromium content and a variety of other alloying elements.
In this article, we will discuss the mechanical properties of AISI 347 stainless steel and how these properties affect its uses. Well also look at its composition and the processes used to produce this stainless steel grade.
Mechanical Properties of AISI 347 Stainless Steel
The mechanical properties of AISI 347 stainless steel are determined by its composition. This grade consists of the following elements: iron (Fe), chromium (Cr), nickel (Ni), manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), titanium (Ti), niobium (Nb), molybdenum (Mo), nitrogen (N) and carbon (C).
The main alloying element in AISI 347 is chromium. This alloying element provides this grade with excellent corrosion resistance and oxidation resistance. Chromium also increases the strength and hardness of AISI 347. Nickel is also used as an alloying element to increase the strength and hardness.
Other alloying elements used in AISI 347 are molybdenum and titanium. They are added to increase the high-temperature strength and creep resistance of this stainless steel.
The mechanical properties of AISI 347 stainless steel depend on the amount of each alloying element used. The most important mechanical properties are its yield strength, tensile strength, and elongation at break.
AISI 347 has a yield strength of 205 MPa and a tensile strength of 620 MPa. Its elongation at break is 40%.
High-Temperature Mechanical Properties
AISI 347 is a ferritic stainless steel. Ferritic steels have lower thermal expansion than austenitic stainless steels, which makes them ideal for high-temperature applications.
At high temperatures, AISI 347 maintains its strength and corrosion resistance better than austenitic stainless steel grades. Its high-temperature strength and creep resistance are also superior to austenitic grades.
At temperatures up to 800°C, the strength of AISI 347 is approximately the same as at room temperature. This allows the steel to be used in applications that require the high-temperature strength of austenitic steel without the risk of creep failure.
Production of AISI 347
AISI 347 is produced using an electric arc furnace and is then put through a series of manufacturing processes, such as hot rolling and cold rolling. The cold-rolling process is used to achieve the required thickness and surface finish.
The mechanical properties of AISI 347 stainless steel are affected by the production processes used. These processes can improve the strength and ductility of the steel by introducing strain hardening.
Conclusion
AISI 347 is one of the most popular stainless steel grades due to its excellent corrosion resistance, oxidation resistance, and strength. It is suitable for a wide range of applications, including architectural, automotive, and high-temperature applications.
The mechanical properties of AISI 347 are determined by its composition, which includes chromium, nickel, molybdenum, and titanium. These elements give the steel its corrosion resistance, strength, and oxidation resistance.
At high temperatures, AISI 347 maintains its mechanical properties and corrosion resistance better than other stainless steel grades. This makes it ideal for high-temperature applications.
AISI 347 is produced using electric arc furnaces and is then put through a series of manufacturing processes, such as hot rolling and cold rolling. These processes can improve the strength and ductility of the steel by introducing strain hardening.
