S355JR steel plate processability and mechanical properties

S355JR is characterized by its good weldability, machinability, and high strength, making it a popular choice for a variety of structural applications. The primary alloying elements in S355JR include carbon (C), manganese (Mn), and silicon (Si), which enhance its strength and ductility. The typical carbon content is limited to a maximum of 0.20%, while manganese content ranges from 1.0% to 1.6%. This composition allows S355JR to achieve a minimum yield strength of 355 MPa, hence the designation "S355."

The research on the processing performance of S355JR steel plate mainly involves the following contents:

1. Cutting performance: including cutting force, surface roughness and processing efficiency of drilling, milling, turning and other processing methods.

2. Formability: Including the plastic deformation behavior and stress distribution law of S355JR steel plate during cold bending, hot bending, stretching and other processing processes.

3. Welding performance: including the welding performance of S355JR steel plate and other materials, the influence of different welding methods on its performance, and the microstructure and chemical composition of the welding area.

4. Microstructure and performance after processing: including the influence of processing on the microstructure and performance of S355JR steel plate, such as hardness, tensile strength, yield strength, elongation, impact toughness, etc.

Understanding the processing performance of S355JR steel plate is helpful to determine the suitable processing technology and optimize processing parameters, so as to improve production efficiency and product quality. In addition, in practical applications, it is also necessary to pay attention to safety issues and environmental protection requirements during processing.

S355JR steel plate is a commonly used non-alloy structural steel plate with the following properties:

1. Mechanical properties: The tensile strength of S355JR steel plate is 470-630 MPa, the yield strength is 355 MPa, and the elongation is about 22%. In addition, its impact toughness is high, and the impact toughness at 20 ° C is greater than 27 J.

2. Corrosion resistance: S355JR steel plate has good corrosion resistance and can be used in harsh environments such as humidity and rain.

3. Processing performance: S355JR steel plate is easy to process and form, and can be processed and connected by cutting, welding, drilling, riveting and other methods.

4. Wear resistance: S355JR steel plate has high surface hardness and good wear resistance, and has a good service life in heavy-load and high-friction occasions.

In summary, S355JR steel plate has excellent mechanical properties, corrosion resistance, wear resistance and processing performance, and is widely used in construction, bridges, transmission towers, ships, machinery manufacturing and other fields.

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GNEE Steel also supplies a variety of high-strength steel plates, such as A514 Grade F, A572 Grade 50, A588 Grade A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to info@gneesteels.com. You are welcome to consult us, and we are very willing to answer your questions.

FAQ

What is S355JR equivalent to?

S355JR equivalent grades have very close chemical composition and mechanical properties to that of S355JR steel. Both the S355JR equivalent grades Q345B, A572 Gr 50, ST52-3, SM490B and S355JR steel are main products of BBN steel.

What is structural steel grade S355JR?

S355JR steel has a high strength-to-weight ratio, making it suitable for use in load-bearing structures such as bridges, buildings, and offshore structures. It has a minimum yield strength of 355 N/mm², making it one of the strongest steel grades available.

What is the difference between S355JR and J2?

In S355JR and S355J2 steel, JR and J2 indicates the steel needs to do +20℃ impact test and -20℃ impact test respectively. The different impact temperature is the main difference between S355JR and S355J2 steel. S355J2 steel can better adapt to low temperature work condition than S355JR steel.

What does JR mean in steel?

The J means that the test was conducted with 27 joules of energy. This is followed by either an R for room temperature, or a number referring to the temperature the tests were conducted at. So JR is room temperature (plus 20 degrees) J0 is 0 degrees and J2 is -20 degrees.

Is S355 better than S275?

This grade of steel is stronger than its S275 counterpart with a minimum yield strength of 355 N/mm2 resulting in its S355 name. This grade is also available in plate, round bar, flat bar, and is even available in blocks.

What is the hardness of S355 jr?

Grade S355JR has a minimum yield strength of 355 MPa. The impact energy at a room temperature of 20°C is at least 27 joules.

What is S355 steel used for?

This structural steel is used in shipbuilding and railway vehicle construction. S355 steel also finds optimal application for the construction of machinery such as cranes and excavators, as well as in building and piping construction, ventilation systems and pumps.

What is the price of S355JR per kg?

Mild Steel, Grade: S355JR – 0.61 USD/kg | 610 USD/ton

What is the difference between S275JR and S355JR?

S275JR is carbon steel, while S355JR is low alloy steel. Both carbon steel S275JR and S355JR low alloy steel are under EN10025-2 standard. The S355JR low alloy steel is higher steel grade than carbon steel S275JR.