GB/T 700 Q235B steel plate is an economical and practical carbon structural steel plate. It is widely used in fields such as industrial and civil buildings, mechanical manufacturing, where high demands for mechanical properties are not required. The core characteristics of Q235B steel plate include balanced mechanical properties, good processability, and relatively low cost.

* Compared to Grade Q235A, Grade Q235B has stricter upper limit requirements for sulfur (S) and phosphorus (P) content, which results in better toughness and weldability.

* The mechanical properties of Q235B carbon steel plate may slightly decrease with increasing thickness, and it must pass the impact test at 20°C.

Due to its excellent overall performance and low cost, Q235B carbon steel plate is widely used in:

1. Construction field: steel structure workshops, bridges, supports, curtain wall skeletons, hot-rolled sections (angle steel, channel steel, I-beams), etc.

2. Machinery manufacturing: general mechanical parts, such as gears, shafts, flanges, bases, boxes, etc.

3. Metal products: supports, guardrails, shelves, etc.

4. Other fields: containers, chassis components for automobiles, low-pressure vessels, welded steel pipes, etc.

Difference In Quality Grades

* The core differences between different quality grades of Q235 steel plates lie in the impact test requirements and the content of harmful elements (Phosphorus and Sulfur).

International Standard Equivalent Materials

* Grade equivalences are only approximate, actual mechanical properties and chemical composition should be compared.