Quenched and tempered S420G2+QT,S420G2+QT steel plate,S420G2+QT steel sheet which is in EN 10225 technical delivery conditions for flat products of high yield strength structural steels.The low temperature impacting test for high strength steel plate S420G2+QT should be done at minus 40 centigrade,and these structural steel plate S420G2+QT is mainly used in oil and offshore platforms.
Steel Standard:EN 10225
Rolling Type:Oil and offshore platform steel plate
Thickness:6mm-300mm
Width:1500mm-4200mm
Length:3000mm-18000mm
Heat Treatment:Quenched and Tempered
Technical Requirements & Additional Services for S420G2+QT steel plate:
Z TEST (Z15,Z25,Z35)
Low temperature impacting test
Ultrasonic test under EN 10160,ASTM A435,A577,A578
Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
Shot blasting and Painting,Cutting and welding as per end user's demands
Mechnical property for S420G2+QT steel plate:
| Thickness (mm) | |||||
| S420G2+QT steel plate | ≤ 16 | > 16 ≤ 40 | > 40 ≤ 63 | > 63 ≤ 80 | > 80 |
| Yield strength (≥Mpa) | 420 | 400 | 390 | 380 | 380 |
| ≤ 40 | > 40 | ||||
| Tensile strength (Mpa) | ≥500 | ≥480 | |||
Chemical composition for S420G2+QT steel plate (Ladle Analysis Max%)
| Main chemical elements composition of S420G2+QT steel plate | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Nb+V | Nb+V+Ti |
| 0.14 | 0.15-0.55 | 1.65 | 0.020 | 0.007 | 0.25 | 0.25 | 0.09 | 0.11 |
| Ni | Alt | Cu | N | Nb | Ti | V | Cr+Mo+Ni+Cu | |
| 0.70 | 0.015-0.055 | 0.30 | 0.010 | 0.040 | 0.025 | 0.080 | 0.90 | |
