Q390B-Q390D hot rolled steel round bars

GB/T1591 Q390 contains five different steel grades as Q390A,Q390B,Q390C,Q390D and Q390E.Structural steel Q390D shall be done impacting test at low temperature minus 20 degree centigrade.Normalised heat treatment suggested to be done for low alloy steel plate Q390D in heavy thickness.

Classification :

PRODUCT DETAILS

Product introduction

Q390B-Q390D hot rolled steel round bars

GB/T1591 Q390 contains five different steel grades as Q390A,Q390B,Q390C,Q390D and Q390E.Structural steel Q390D shall be done impacting test at low temperature minus 20 degree centigrade.Normalised heat treatment suggested to be done for low alloy steel plate Q390D in heavy thickness.

Product parameters

Steel Grade:

Q390

Application:

High Speed Steel, Tool Steel

Shape:

Round bar

Standard:

AISI, DIN, JIS, GB

Size:

50mm*50mm-600mm*600MM

Surface:

Black, Peeled, Turned, Grinded

Technique:

Hot rolled, Forged

Ultrasonic Test:

100% UT Passed

Dimensions

 

Hot Rolled

Forged

Size(mm)

 

50mm*50mm-600mm*600MM

 

50mm*50mm-600mm*600MM

Length (mm)

6000 or as required

1000-6000

Chemical and Mechanical

Mechnical property for Q390B low alloy structural steel:

Thickness (mm)
Q390B ≤ 16 > 16 ≤ 35 > 35 ≤ 50 >50
Yield strength (≥Mpa) 390 370 350 330
Tensile strength (Mpa) 490-650


Chemical composition for Q390B low alloy structural steel (Heat Analysis Max%)
 

Main chemical elements composition of Q390B
C Si Mn P S V Nb Ti Cr Ni
0.20 0.55 1.00-1.60 0.040 0.040 0.02-0.20 0.015-0.060 0.02-0.20 0.30 0.70


Technical Requirements & Additional Services:
♦ Low temperature impacting test
♦ Cutting and welding as per end user’s demands
♦ More striction on some chemical elements contains
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578 

Warehouse storage

Our company is a quality benchmark enterprise in Shandong Province, a national contract-abiding and credit-abiding enterprise, and a national, industry and group standard unit for "Colored Steel Plate for Building Decoration". We have many customers all over the world, and our products are exported to Asia, the Middle East, America, Europe, Africa and other countries, enjoying a good reputation at home and abroad. Up to now, we have also established long-term, win-win partnerships with a number of large steel mills.

 

 

Packing and delivery

We are the first-level agent for Chinese state-owned enterprises Shanghai Baosteel and Taigang Iron and Steel Group. Our products can meet every unique requirement of our customers. We provide customized services. We can support customers with quality inspections if needed. We can provide competitive prices, good quality control, purchasing suggestions. Welcome to inquire and order!

 

 

Customer visit

Up to now, we have also established long-term, win-win partnerships with a number of large steel mills. We are the first-level agent for Chinese state-owned enterprises Shanghai Baosteel and Taigang Iron and Steel Group. Our products can meet every unique requirement of our customers. We provide customized services.

 

 

Application field

The main supply fields are: aerospace, national defense equipment, military weapons, chemical industry, shipbuilding, nuclear energy, trains, containers, environmental protection, precision machining, auto parts, machinery, electronic products, molds, medical treatment Equipment, construction, decoration, etc.

 

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6 : Samples can be provided as your requirements