Q420 steel is a Chinese GB standard (GB/T 1591) high strength low alloy structural steel, and divided into 5 quality grades: Q420A, Q420B, Q420C, Q420D and Q420E. Q420D material density is 7.85 g/cm³, and the yield strength is 420 MPa.
As a professional GB/T 1591 Q420D steel plates manufacturer in China, Katalor Industry can supply high strenth low alloy materail GB/T 1591 Q420D steel plates, GB/T 1591 Q420D coils, Q420D sheets and Q420D steel beams.
GB/T 1591 Q420D steel plates/ coils available size
Thickness: 1.2-600mm
Width: 1220-4200mm
Length: 5000-18000mm
Notes: coil thickness ≤ 25mm
GB/T1591 Q420D chemical composition
|
Grade |
C |
Si |
Mn |
P |
S |
Nb |
V |
|
Q420D |
≤0.20 |
≤0.50 |
≤1.70 |
0.030 |
0.025 |
0.70 |
0.20 |
|
Ti |
Cr |
Ni |
Cu |
N |
Mo |
Als |
|
0.20 |
0.30 |
0.80 |
0.30 |
0.015 |
0.20 |
0.015 |
GB/T1591 Q420D mechanical properties
|
Grade |
Thickness |
Yield strength |
Tensile strength |
|
Q420D |
≤16 |
≥420 |
≤40 |
520-680 |
|
16-40 |
≥400 |
40-63 |
520-680 |
|
40-63 |
≥380 |
63-80 |
520-680 |
|
63-80 |
≥360 |
80-100 |
520-680 |
|
80-100 |
≥360 |
100-150 |
500-650 |
|
100-150 |
≥340 |
150-250 |
- |
|
150-200 |
- |
250-400 |
- |
|
200-250 |
- |
- |
- |
|
250-400 |
- |
- |
- |
If you are interested in GB/T1591 Q420D steel plates, and ask for the Q420D steel quotation, pls send email to us [email protected].
