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■ Overview
Steel angle grade Q420B is under steel specification GB/T706 which is for high strength low alloy structural steels.When customers need special sizes for steel Q420B useage,GB/T706 Q420B steel angles,angle bar and L profile is a kind carbon structure steel which is used in riveted,bolted or welded construction of bridges and buildings,and for general structural purpose.
■ 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 Q420B low alloy structural steel angle:
| Thickness (mm) | ||||
| Q420B | ≤ 16 | > 16 ≤ 35 | > 35 ≤ 50 | >50 |
| Yield strength (≥Mpa) | 420 | 400 | 380 | 360 |
| Tensile strength (Mpa) | 520-680 | |||
►Chemical composition for Q420B low alloy structural steel angle (Heat Analysis Max%)
| Main chemical elements composition of Q420B | |||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Cr | Ni |
| 0.20 | 0.55 | 1.00-1.70 | 0.040 | 0.040 | 0.02-0.20 | 0.015-0.060 | 0.02-0.20 | 0.40 | 0.70 |
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