Q355NC steel plate thickness 8-260mm cutting and deep processing technical service introduction

Aug 20, 2025 Leave a message

1.Mechnical property for GB/T 1591-2018 Q355NC STEEL PLATE

Mechanical Property for Q355NC steel plate

 

Thickness (mm)

Yield strength (≥Mpa)

T≤16

16<T≤40

40<T≤63

63<T≤80

80<T≤100

100<T≤150

150<T≤200

200<T

355

345

335

325

315

295

285

275

Tensile strength (Mpa)

T≤100

100<T≤200

200<T

470-630

450-600

450-600


2.Chemical composition for GB/T 1591-2018 Q355NC STEEL PLATE (Heat Analysis Max%)

Main chemical elements composition of Q355NC

C

Si

Mn

P

S

Nb

V

0.20

0.50

0.90-1.65

0.030

0.030

0.005-0.05

0.01-0.12

Ti

Cr

Ni

Cu

Mo

N

Als Min.

0.006-0.05

0.30

0.50

0.40

0.10

0.015

0.015

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3.Introduction to Q355NC Steel Plate

Q355NC Steel Plate Implementation Standard: GB/T1591-2018

Meaning of the Alphanumeric Implementation Standard Number for Q355NC Steel Plate

GB in the Q355NC Steel Plate Standard = National Standard

T in the Q355NC Steel Plate Standard = Recommended

1591 in the Q355NC Steel Plate Standard = Implementation Standard Number

2018 in the Q355NC Steel Plate Standard = Implementation Standard Year

4.Technical Requirements & Additional Services for Q355NC steel plate:
Normalising or Normalising Rolling heat treatment
Cutting,Welding,Machining,Milling as per end user's CAD drawing
Shot blasting comply to SA 2.5 or SSPC and painting with shop primer
More striction on some chemical elements contains for special applications
Non-destructive inspection under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1.