1. What is Q235 steel?
Q235 is a common carbon structural steel specified in the Chinese national standard GB/T 700, commonly known as A3 steel, and belongs to low-carbon steel.
2. What do the letters and numbers in the Q235 designation mean?
Q: The first letter of "yield," representing yield strength.
235: Minimum yield strength ≥235 MPa (thickness ≤16mm)
3. What type of steel is Q235?
Carbon content ≤0.22%, belonging to low-carbon steel/mild steel.
4. What standard does Q235 comply with?
Current standard: GB/T 700-2006 "Carbon Structural Steel."
5. What was the old name for Q235?
The old name was A3 steel, changed to Q235 after GB/T 700-88.