DIN 2391 Standard Seamless Steel Pipe Supplier

Standard Grades of DIN 2391 pipes

DIN 2391 specifies two quality grades for seamless precision steel tubes. Quality A is for tubes without special inspection requirements, while Quality C is for tubes subject to additional requirements.

Material Grades of DIN 2391 pipes

The standard includes several steel grades such as St30Al (1.0212), St30Si (1.0211), St35 (1.0308), St45 (1.0408), and St52 (1.0580). Each grade has specific chemical composition requirements.

Chemical Composition of DIN 2391 pipes

The chemical composition varies by grade. For example, St30Al has 0.17-0.24% C, 0.10-0.35% Si, 0.40-0.80% Mn, max 0.035% P, and max 0.035% S. St52 has max 0.22% C, max 0.55% Si, max 1.60% Mn, max 0.025% P, and max 0.025% S.

Mechanical Properties  of DIN 2391 pipes

Mechanical properties also differ. St30Al has a tensile strength of 420-550 MPa, yield strength of 275 MPa min, and elongation of 21% min. St52 has a tensile strength of 580-730 MPa, yield strength of 420 MPa min, and elongation of 15% min.

Advantages of DIN 2391 Seamless Steel Pipe

DIN 2391 seamless steel pipes are known for their high precision and dimensional accuracy. They have tight tolerances and smooth surfaces, making them ideal for applications requiring high precision. These pipes are manufactured through cold drawing or rolling processes, which enhance their mechanical properties and durability. They offer excellent resistance to wear and tear, reducing maintenance costs and ensuring long service life.

Applications of DIN 2391 Seamless Steel Pipe

DIN 2391 seamless steel pipes are widely used in various industries. In the automotive sector, they are used for manufacturing critical components like shock absorbers and steering systems. In mechanical engineering, these pipes are essential for creating high-precision components that require reliable performance under stress. They are also commonly used in hydraulic and pneumatic systems for fluid control, ensuring leak-free performance.