+86 371 55057610 
inquiry@xsteelplate.com
■ Overview
Steel angle grade Q390B is under steel specification GB/T706 which is for high strength low alloy structural steels.When customers need special sizes for steel Q390B useage,Xinsteel has the ability to cut and weld in our processing plant for small parts,round plate,seal head and other frames.
■ Full Data
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
♦ 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
■ Techicals
►Mechnical property for Q390B low alloy structural steel angle:
| 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 angle (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 |
Tel：+86 371 55057610 
Fax： +86 371 5505 7611