Do you know the difference between A36 and O235B carbon steel plates?

Release time:

2024-06-11

Shanghai Zhongze Yi Metal Materials Co., Ltd. focuses on the production and sales of steel plates. We have rich experience and reputation in the market, and export to multiple countries overseas. When purchasing steel plates, we often hear a comparison between American standard steel plates A36 and O235B, both of which have certain differences in performance. We will provide you with detailed descriptions of their performance from multiple perspectives and help you make wise purchasing decisions.

Firstly, let's compare these two steel plates in terms of strength. The yield strength of A36 is 250MPa and the tensile strength is 400-550MPa, while the yield strength of Q235B steel plate is 235MPa and the tensile strength is 375-500MPa. From these data, it can be seen that the strength of A36 is slightly higher than Q235B, which makes it more suitable for use in engineering that requires higher strength support. Secondly, let's compare their chemical composition. The chemical composition of American standard steel plate A36 contains carbon (C) content of 0.25%, sulfur (S) content of 0.05%, and phosphorus (P) content of 0.04%, while Q235B steel plate has a carbon (C) content of 0.22%, sulfur (S) content of 0.05%, and phosphorus (P) content of 0.045%. From the perspective of chemical composition, there is not much difference between these two types of steel plates, both of which are carbon structural steel and have good weldability and processability.

In addition, there are some differences in corrosion resistance between American standard steel plates A36 and Q235B. Due to the high carbon content of American standard steel plate A36, it is prone to corrosion in environments with high humidity. O235B steel plate has good corrosion resistance in general environments. For ordinary engineering projects, choosing Q235B steel plate can better protect the structure from corrosion. After that, we also need to consider the factor of weldability. A36 steel plate has good weldability and can be connected through conventional welding methods. However, Q235B steel plate has certain welding problems due to its low carbon content. In some projects that require high welding quality, choosing American standard steel plate A36 may be more reliable.

Overall, there are certain differences between A36 and Q235B in terms of strength, chemical composition, corrosion resistance, and weldability. If you need higher strength support and better corrosion resistance, you can choose American standard steel plate A36. If you have higher requirements for welding quality, you can choose Q235B steel plate. Shanghai Zhongze Yi Metal Materials Co., Ltd. provides high-quality steel plate products and is committed to providing steel solutions for various industries. With years of experience and capital, the company has become an integrated entity of procurement, processing, logistics, and retail. Welcome to inquire or visit our website for more information.