Q275 steel is a Chinese GB standard plain carbon structural steel, and divided into 4 quality grades: Q275A, Q275B, Q275C and Q275D, material density is 7.85 g/cm3, tensile strength is from 490 to 630 MPa, and yield strength is 275 MPa (tested with 16mm diameter steel bar or steel plate). “Q” is the first letter of Chinese spelling of “qu fu dian”, which means Yield Point, “275” refers to 275 MPa. The latest standard of steel Q275 is GB/T 700 – 2006.
The best equivalent steel grade is Grade S275J0 under steel specification EN 10025-2. Q275 grade steel shall be done low temperature impacting test under zero centigrade.
GB/T700 Q275 chemical composition
| Grade |
C |
Mn |
Si |
S |
P |
|
Q275 |
0.28-0.38 |
0.50-0.80 |
0.35 |
0.05 |
0.045 |
GB/T700 Q275 mechanical properties
| Grade |
Thickness |
Yield strength |
Tensile strength |
Elongation % |
Impacting Test |
|
Temperature |
V |
|
Q275 |
≤16 |
≥275 |
490-630 |
≥20 |
- |
- |
|
16-40 |
≥265 |
≥19 |
|
40-60 |
≥255 |
≥18 |
|
60-100 |
≥245 |
≥17 |
|
100-150 |
≥235 |
≥16 |
|
>150 |
≥225 |
≥15 |
GB/T700 Q275 structural steel products are usually delivered in hot rolled, controlled rolled or normalized condition.
Katalor is able to produce GB/T700 Q275 structural steel plates, Q275 carbon steel plates, Q275 steel sections and Q275 steel profiles. Shanghai Katalor is located in Pudong district of Shanghai city. It is only 30 minutes from Pudong International airport to our company. If you have chance to China, we sincerely invite you to visit our factory.
