Q235B Common Steel Plate Models Grades in China

Understanding Q235B and Exploring 15 Other Common Steel Plate Models in China

Q235B Steel Plate Grades


In the world of steel, various grades and models play crucial roles in different applications. One such commonly used steel is Q235B. Let’s delve into its characteristics and significance, while also taking a look at 15 other notable steel plate models in China.


Q235B: An Overview


Q235B is a type of carbon steel that is widely employed in construction, machinery manufacturing, and various other industries. It is known for its moderate strength and good weldability. This steel grade is designed to meet specific mechanical properties and performance requirements.


The “Q” in Q235B stands for “yield strength,” indicating the minimum stress required to cause permanent deformation. The number “235” represents the yield strength value in MPa (megapascals). The “B” suffix indicates certain quality requirements and additional testing criteria.


Q235B offers a balance between strength and ductility, making it suitable for a wide range of applications. It can be easily fabricated and processed, which further enhances its versatility.


Other Common Steel Plate Models in China


  1. Q215A/Q215B: Slightly lower strength compared to Q235B, but still commonly used in certain applications.
  2. Q275: Has higher strength and is used in more demanding structural applications.
  3. 08AL: A low-carbon steel with good formability, often used in sheet metal fabrication.
  4. 10#: A medium-carbon steel commonly used for shafts, gears, and other mechanical components.
  5. 20#: Similar to 10#, but with slightly higher carbon content for better strength.
  6. 35#: A higher-carbon steel used in applications requiring more strength and toughness.
  7. 45#: Known for its good mechanical properties and is widely used in machinery parts.
  8. 50#: Offers higher strength and is employed in heavy-duty machinery and structural components.
  9. 65Mn: A spring steel with excellent elasticity and fatigue resistance.
  10. 20Cr: A low-alloy steel with improved hardenability and mechanical properties.
  11. 40Cr: Commonly used in automotive parts, machine tools, and other precision applications.
  12. 60Si2Mn: A spring steel with high strength and good fatigue resistance.
  13. Q345A/Q345B/Q345C/Q345D/Q345E: High-strength low-alloy steels with good weldability and mechanical properties.
  14. Q390A/Q390B/Q390C/Q390D/Q390E: Higher-strength grades suitable for more demanding structural applications.
  15. Q420A/Q420B/Q420C/Q420D/Q420E: Even higher strength levels for specialized applications.


These steel plate models each have their unique characteristics and application areas, depending on the specific requirements of the project or product.


Applications of These Steel Plate Models


The various steel plate models find use in a wide array of industries and applications. In construction, they are used in building structures, bridges, and infrastructure. In manufacturing, they are employed in the production of machinery, vehicles, and equipment. Additionally, they play a role in shipbuilding, pressure vessels, and many other industrial sectors.


The selection of the appropriate steel plate model depends on factors such as the required strength, durability, corrosion resistance, and fabrication requirements. Engineers and designers carefully consider these factors to ensure the optimal performance and safety of the end product.


Quality Assurance and Standards


To ensure the quality and reliability of these steel plate models, strict quality control measures and adherence to relevant standards are in place. In China, there are specific national standards and industry regulations that govern the production and use of steel plates to ensure consistency and compliance.




Understanding the different steel plate models, including Q235B Steel Plate Grades and the other 15 commonly encountered ones in China, is essential for professionals in various industries. These steel grades play a significant role in shaping our modern infrastructure and manufacturing capabilities. By knowing their properties, applications, and quality requirements, we can make informed decisions when selecting the appropriate steel for specific projects and applications. The world of steel continues to evolve, and these models remain at the forefront of many industrial endeavors, driving progress and innovation.


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