China Alumzinc Steel Coil, Az150 Galvalume Steel Coil, Find details about China Zn-Al Coated Steel Sheet, Gl from Alumzinc Steel Coil, Az150 Galvalume Steel Coil
| Chemical Requiremetns for structure steel | ||||||||||||
| Composition, %-Heat Analysis Element, maximum, unless otherwise Shown | ||||||||||||
| Designation | C | Mn | P | S | Cu | Ni | Cr | Mo | V | Cb | TiA | NB |
| G230 | 0.20 | 1.35 | 0.04 | 0.04 | 0.25 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | ^ |
| G255 | 0.20 | 1.35 | 0.10 | 0.04 | 0.25 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | ^ |
| G275 | 0.25 | 1.35 | 0.10 | 0.04 | 0.25 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | ^ |
| G340 | 0.25 | 1.35 | 0.20 | 0.04 | 0.25 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | ^ |
| G550 | 0.20 | 1.35 | 0.04 | 0.04 | 0.25 | 0.20 | 0.15 | 0.06 | 0.008 | 0.015 | 0.025 | ^ |