What Is The Tensile Strength Of 1.4301?

Stainless steel is a corrosion-resistant, high-temperature-resistant material widely used in various fields such as manufacturing, construction, and the chemical industry. Among the different grades, 1.4301 stainless steel (also known as 304 stainless steel) is one of the most commonly used.

1.4301 stainless steel corresponds to the US standard 304 stainless steel. Its tensile strength can be influenced by several factors, including the material's state (such as annealing or cold working), thickness, and applicable standards. Below is a detailed introduction:

 

Tensile Strength of 1.4301 Stainless Steel

Annealed State (Solution Treatment)

In the common annealed state, the tensile strength of 1.4301 stainless steel typically falls within the following ranges based on different standards:

European Standard (EN 10088-2): The tensile strength for 1.4301 stainless steel in the annealed state is Rm ≥ 500 MPa.

Chinese Standard (GB/T 20878-2007): For grade 06Cr19Ni10, the tensile strength after solution treatment is ≥ 520 MPa.

American Standard (ASTM A240): For 304 stainless steel plates, the tensile strength requirement in the annealed state is ≥ 515 MPa.

Cold Working State

After cold working (such as cold rolling or cold drawing), the tensile strength of the material improves significantly. The more extensive the cold working deformation, the more the tensile strength increases. For example:

After light cold working, the tensile strength may reach 600-700 MPa.

After more extensive cold working, the tensile strength can exceed 1000 MPa.

 

Elongation of 1.4301 Stainless Steel

Annealed State (Solution Treatment)

The elongation for 1.4301 stainless steel in the annealed state, according to different standards, is as follows:

European Standard (EN 10088-2):

For plates up to 3mm thick, the elongation (A₅₀, measured at a gauge length of 50mm) should be ≥ 40%.

For plates greater than 3mm thick, the elongation (A₈₀, measured at a gauge length of 80mm) should be ≥ 40%.

Chinese Standard (GB/T 3280-2015): The elongation of the plate should be ≥ 40%.

American Standard (ASTM A240): The elongation of 304 stainless steel annealed plates (with a gauge length of 2 inches, or about 50.8mm) should be ≥ 40%.

Cold Working State

After cold working, the strength of 1.4301 stainless steel increases, but the elongation decreases significantly. The greater the cold working deformation, the more the elongation decreases. For example:

After light cold working, the elongation may drop to 20% - 30%.

After heavier cold working, the elongation may be less than 10%.