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Q420qE, Q420qE-Z35 structural steel plate 

Q420qE, Q420qE-Z35 structural steel plate 

GB/T 714 Q420qE grade is a high strength structural steel. This steel is mainly used to manufacture steel for railway and highway bridges. It is required to have high strength and satisfactory resistance, low notch sensitivity, good low temperature resistance, anti-aging sensitivity, anti-fatigue function and welding function.
GB/T 714 Q420qE chemical composition (%)


C

Si

Mn

P

S

Nb

V

Ti

Cr

Ni

Cu

Mo

B

N

Als

≤0.18

≤0.55

1.00-1.70

≤0.020

≤0.010

≤0.06

≤0.08

≤0.03

≤0.80

≤0.70

≤0.55

≤0.35

≤0.004

≤0.012

≥0.015

Q420qE mechanical properties


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

420

410

540

19

0

47

Z-direction performance of Q420qE-Z35 structural steel plate
The tear resistance of the steel plate is very good, stable, and the welding performance is excellent.
Q420qE-Z35 material is widely used in long-span structural bridge structures, and weather-resistant bridge steel plates are also used in many projects.

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