Products Description
Q390A steel sheet is mainly used for manufacturing the plants of factory,the common constructure and construction machinery and equipment.The tensile strength of low alloy steel plate Q390A is within 490-650 Mpa,and the minimum yield strength is 390Mpa for thickness equal and belows 16mm.

Mechnical property for Q390A low alloy structural steel
| Thickness (mm) | ||||
| Q390A | ≤ 16 | > 16 ≤ 35 | > 35 ≤ 50 | >50 |
| Yield strength (≥Mpa) | 390 | 370 | 350 | 330 |
| Tensile strength (Mpa) | 490-650 | |||
Chemical composition for Q390A low alloy structural steel (Heat Analysis Max%)
| Main chemical elements composition of Q390A | |||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Cr | Ni |
| 0.20 | 0.55 | 1.00-1.60 | 0.045 | 0.045 | 0.02-0.20 | 0.015-0.060 | 0.02-0.20 | 0.30 | 0.70 |
Products Application
GB/T1591 Q390A carbon steel coil is used in the Construction of Bridges, Highway Construction and Other Engineering construction.

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