S420G2+M,S420G2+M steel plate,S420G2+M steel sheet also named as S420G2+M high strength oil and offshore platform steel plate under steel stand EN 10225.S420G2+M shall be done low temperature impacting test under minus 40 centigrade,and the minimum energy value shall be above 50J.When rolling oil and offshore steel plate S420G2+M,the heat treatment TMCP shall be done for each steel plate.
Steel Standard:EN 10225
Rolling Type:Oil and offshore platform steel plate
Thickness:6mm-300mm
Width:1500mm-4200mm
Length:3000mm-18000mm
Heat Treatment:Thermo-Mechanical Control Process (TMCP)
Mechnical property for S420G2+M steel plate:
| Thickness (mm) | |||||
| S420G2+M | ≤ 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+M steel plate (Ladle Analysis Max%)
| Main chemical elements composition of S420G2+M 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 | |
