Product Uses and Introduction

This series of products is for wind power applications, and the material selection needs to be determined based on the specific circumstances. Below, we will introduce the thickness range, delivery status, and applicable standards for each grade that we can provide. We hope this information is helpful. If you have any questions about the products or need a quote, please contact us via email. Because some grades can be categorized into multiple types according to their applications, this may cause some inconvenience in your search, for which we sincerely apologize. We also welcome any suggestions you may have. Thank you very much!

Spot inventory inquiry Spot inventory

If conditions permit, we can also provide steel mill customization services, where the thickness, width, and length can all be made to your needs, just like a tailor making clothes for you, implementing personalized orders.

Steel mill customized business email: customize@cehesteel.com

Scope of supply

Grade Thickness(mm) Delivery status Ordering Standards Remarks
Q345C/D/E 6～100 AR、CR、TM、NR、N GB/T1591 All steel grades can be produced according to GB/T5313
, including Z-axis plates (Z15, Z25, Z35).with a minimum thickness of
15mm.
Q355C/D 6～100 AR、CR GB/T1591
Q355NC/D/E 6～100 NR、N GB/T1591
Q355MC/D/E 6～60 TM GB/T1591
Q345FTC/D/E 6～100 AR、CR GB/T 28410
6～100 NR、N GB/T28410
6～60 TM GB/T 28410
GB/T712 DH36/EH36 6~60 TM GB/T712
GB/T712 DH36/EH36 6~80 N GB/T712
S355JR/J0/J2/K2 6～100 AR、CR、N EN 10025-2

Chemical Composition

Grade Quality grade Chemical Composition/%
C Mnᵃ P S Si Nb V Ti Mo Cr Ni Cu Als N
≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≥ ≤
Q235FT B、C 0.18 0.50~1.40 0.030 0.025 0.50 0.050 0.060 0.050 0.10 0.30 0.30 0.30 0.015 0.012
D、E 0.025 0.020
Q275FT C 0.18 0.50~1.50 0.025 0.020 0.50 0.050 0.060 0.050 0.10 0.30 0.30 0.30 0.015 0.012
D 0.015
E、F 0.010
Q345FT C、D 0.20 0.90~1.65 0.025 0.015 0.50 0.06 0.12 0.050 0.20 0.30 0.50 0.30 0.015 0.012
E、F 0.020 0.010 0.010
Q420FT C、D 0.20 1.00~1.70 0.025 0.015 0.50 0.06 0.15 0.050 0.20 0.30 0.50 0.30 0.015 0.012
E、F 0.020 0.010 0.010
Q460FT C、D 0.20 1.00~1.70 0.025 0.015 0.60 0.07 0.15 0.050 0.30 0.60 0.80 0.55 0.015 0.012
E、F 0.020 0.010 0.010
Q550FT D 0.20 ≤1.80 0.020 0.010 0.60 0.07 0.15 0.050 0.50 0.80 0.80 0.80 0.015 0.012
E 0.010
Q620FT D 0.20 ≤1.80 0.020 0.010 0.60 0.07 0.15 0.050 0.50 0.80 0.80 0.80 0.015 0.012
E 0.010
Q690FT D 0.20 ≤1.80 0.020 0.010 0.60 0.07 0.15 0.050 0.50 0.80 0.80 0.80 0.015 0.012
E 0.010
The lower limit of Mn content for steel plates delivered in normalized condition shall be as specified in Table 1. No lower limit of Mn content shall be required for steel plates delivered in other conditions.

Mechanical properties

Grade Quality grade Transverse yield strength
Rel /(N/mm²)
≥
Thickness(mm)		 Tensile strength
Rm/(N/mm²)		 Post-fracture growth rate
A/%		 Impact power
KV2 /J
≥		 180°Bending test
d=bending mandrel diameter
a=Sample thickness
Thickness
≤16 ＞16~40 ＞40~100 ≤16 ＞16~100
Q235FT B、C、D 235 225 215 360~510 24 47 d=2a d=3a
E 34
Q275FT C、D 275 265 255 410~560 21 47
E、F 34
Q345FT C、D 345 335 325 470~630 21 47
E、F 34
Q420FT C、D 420 400 390 520~680 19 47
E、F 34
Q460FT C、D 460 440 420 550~720 17 47
E、F 34
Q550FT D 550 530 670~830 16 47
E 34
Q620FT D 620 600 710~880 15 47
E 34
Q690FT D 690 670 770~940 14 47
E 34
1.When yield is not obvious, Rp0.2 can be used instead of lower yield.
2.When the thickness is greater than 60 mm, the elongation after fracture can be reduced by 1%.
3.The impact test used longitudinal specimens.
4.Impact test temperatures corresponding to different quality grades:B—20℃、C—0℃、D— -20℃、E— -40℃、F— -50℃。