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■ Overview
Q420E high strength low alloy structural steel owned minimum tensile strength at 520 Mpa and minimum yield strength at 420 Mpa for thickness equal or belows 16 millimeters.When rolling Q420E,Q420E steel plate,Q420E steel sheet,the impact test shall be done at minus 40 centigrade.
■ Full Data
Technical Requirements & Additional Services for Q420E steel plate:
♦ 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 Q420E low alloy structural steel:
| Thickness (mm) | ||||
| Q420E | ≤ 16 | > 16 ≤ 35 | > 35 ≤ 50 | >50 |
| Yield strength (≥Mpa) | 420 | 400 | 380 | 360 |
| Tensile strength (Mpa) | 520-680 | |||
►Chemical composition for Q420E low alloy structural steel (Heat Analysis Max%)
| Main chemical elements composition of Q420E | ||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Al (min.) | Cr | Ni |
| 0.20 | 0.55 | 1.00-1.70 | 0.025 | 0.025 | 0.02-0.20 | 0.015-0.060 | 0.02-0.20 | 0.015 | 0.40 | 0.70 |
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