GB/T 714 Q420qC structural steel for bridge
What is the Q420qC grade steel? Katalor Industry is a leading exporter of hot rolled structural steel plates in China. It can supply and export high quality Q420qC grade hot rolled plates with competitive price.
Q420qC steel plate implements the standard GB/T 714-2008.
Equivalent: S275J2
Size: Q420qC plate thickness up to 150mm
GB/T 714 Q420qC steel chemical composition (%)
Grades |
C |
Si |
Mn |
P |
S |
Nb |
V |
Ti |
Cr |
Ni |
Cu |
Mo |
B |
N |
Als |
|
Q420qC |
≤0.18 |
≤0.55 |
1.00-1.70 |
≤0.030 |
≤0.025 |
≤0.06 |
≤0.08 |
≤0.03 |
≤0.80 |
≤0.70 |
≤0.55 |
≤0.35 |
≤0.004 |
≤0.012 |
≥0.015 |
Q420qC steel mechanical properties
Grades |
Yield strength(MPa) min for Thickness in mm |
Tensile strength min. |
Elongation |
V-type impact test |
||
|
≤50 |
>50≤100 |
Mpa |
% min |
Test temperature ℃ |
Impact absorption energy KV₂/J |
|
|
Q420qC |
420 |
410 |
540 |
19 |
0 |
47 |
GB/T 714 Q420qC steel has high strength and good fatigue resistance; high toughness and low brittle transition temperature; good cold forming performance and welding performance; good corrosion resistance and certain wear resistance. In normalizing or normalizing and tempering state, Q420qC steel plate has high comprehensive mechanical properties.
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