Q390 steel is a Chinese GB standard (GB/T 1591) high strength low alloy structural steel, and divided into 5 quality grades: Q390A, Q390B, Q390C, Q390D and Q390E, material density is 7.85 g/cm³. As a professional GB/T 1591 Q390B steel plates manufacturer in China, Katalor Industry can supply GB/T 1591 Q390B steel plates, GB/T 1591
Q390B coils, Q390B sheets and Q390B steel beams.
GB/T 1591 Q390B steel plates/ coils available size
Thickness: 1.2-600mm
Width: 1220-4200mm
Length: 5000-18000mm
Notes: coil thickness ≤ 25mm
GB/T 1591 Q390B chemical composition
|
Grade |
C |
Si |
Mn |
P |
S |
Nb |
V |
|
Q390B |
≤0.20 |
≤0.50 |
≤1.70 |
0.035 |
0.035 |
0.07 |
0.20 |
|
Ti |
Cr |
Ni |
Cu |
N |
Mo |
Als |
|
0.20 |
0.30 |
0.50 |
0.30 |
0.015 |
0.10 |
- |
GB/T1591 Q390B mechanical properties
|
Grade |
Thickness |
Yield strength |
Tensile strength |
|
Q390B |
≤16 |
≥390 |
≤40 |
490-650 |
|
16-40 |
≥370 |
40-63 |
490-650 |
|
40-63 |
≥350 |
63-80 |
490-650 |
|
63-80 |
≥330 |
80-100 |
490-650 |
|
80-100 |
≥330 |
100-150 |
470-620 |
|
100-150 |
≥310 |
150-250 |
- |
|
150-200 |
- |
250-400 |
- |
|
200-250 |
- |
- |
- |
|
250-400 |
- |
- |
- |
Katalor enterprises have advanced steel processing equipment, include automatic arc-submerging welder, Dc manual arc welding machine, radial drill, CNC floor-type sharp boring machine, CNC gantry milling, H-beam assembling machine, and Q390B H-beam welding production line. We can supply prime quality Q390B plates and Q390B steel beams for you, please send us inquiry if you need.
