Mechanical properties of chromium-nickel austenitic stainless steel 1Cr17Ni7 (AISI301) at room temperature

Mechanical Properties of Chromium-Nickel Austenitic Stainless Steel 1Cr17Ni7 (AISI301) at Room Temperature

Chromium-Nickel austenitic stainless steel 1Cr17Ni7 (AISI301) is a low carbon steel that is mostly used in applications where corrosion resistant properties are of high value. The austenitic stainless steel is more often referred to as “super stainless steel” due to its superior corrosion resistance. It retains superior corrosion resistance even in highly concentrated solutions, making it an ideal choice for applications where corrosion battles exist. Additionally, 1Cr17Ni7 (AISI301) austenitic stainless steel offers excellent mechanical properties, such as good ductility, strength and toughness, at both ambient temperatures and elevated temperatures.

At room temperature, 1Cr17Ni7 (AISI301) austenitic stainless steel offers high tensile strength, ranging from 600-1,200 MPa. The ultimate tensile strength of this steel can be further improved by heat treatments or by stress relieving the material, making it suitable for high strength applications. The yield strength of this steel at room temperature ranges from 350-750 MPa. The Elongation is typically 47-60%, while the Reduction of Area is generally 38-48%. The Young’s modulus of 1Cr17Ni7 (AISI301) austenitic stainless steel at room temperature is 200 GPa, while the Poisson’s ratio is 0.3.

Moreover, the impact strength of 1Cr17Ni7 (AISI301) austenitic stainless steel is typically higher than that of higher alloyed variants of stainless steel. The Charpy V-Notch impact strength at room temperature is 129-214 J/cm2. These values are generally higher or equal to the values of similar alloys, implying superior toughness for 1Cr17Ni7 (AISI301) austenitic stainless steel.

The fatigue properties of 1Cr17Ni7 (AISI301) austenitic stainless steel at room temperature are also excellent. This steel has a fatigue strength ratio (Shear stress/Shear strength) of 0.5, usually exceeding the fatigue strength of other stainless steel alloys. Moreover, its fatigue limit at room temperature ranges from 230-540 MPa, which is further improved by heat treatments or stress relieving the material.

The creep strength of 1Cr17Ni7 (AISI301) austenitic stainless steel varies widely at different temperatures and stress levels. Its creep strength at room temperature ranges from 590-1,420 MPa. Its creep strength at higher temperatures and under mechanical stress, such as creep-rupture tests, is generally lower than that of other stainless steel alloys.

In conclusion, chromium-nickel austenitic stainless steel 1Cr17Ni7 (AISI301) exhibits excellent mechanical properties, such as high strength, good ductility, excellent tensile and fatigue strength, and great corrosion resistance, making it a suitable choice for applications in corrosive conditions and high strength requirements.

AISI 301 stainless steel is a austenitic stainless steel composed of 17% chromium and 7% nickel, which can resist corrosion and high temperatures. This steel is well known for its superior mechanical properties at room temperature.

The tensile strength of AISI 301 stainless steel at room temperature is 515MPa. The yield strength is 205MPa followed by an elongation of 40%. This stainless steel is able to be cold worked with extreme depth; therefore it is used in various applications such as industrial equipment and tools. It also has the ability to resist corrosion, making it an ideal choice for meat processing and packaging.

AISI 301 stainless steel also demonstrates its strength in weld applications. It has a thermal coefficient of expansion of 18.6 x 10-6/°C and an electrical resistivity of 0.73 µΩ cm at zero degrees Celsius. This stainless steel can also be heat treated to reach its highest hardness, with heats of up to 2100°C. When heat treated, it is able to reach a maximum tensile strength of 800MPa.

Overall, AISI 301 stainless steel is known for its superior mechanical properties and excellent formability. At room temperature, it can reach high strength for use in harsh environments, and when heat treated, it can reach even higher strength levels. Additionally, its corrosion resistance allows for use in food processing and packaging.