TB/T 1979 Q345NQR2 steel is a new Chinese steel grade of 09CuPTiRE-A atmospheric corrosion resisting steel according to TB/T 1979-2014.
The Q345NQR2 equivalent steel grades are ASTM A588/A588M specification A588 Grade A,A588 Grade B,A588 Grade C and A588 Grade K. Katalor keeps stock for Q345NQR2 steel sheet with thickness from 2-20mm,width with 1000-2000mm and any length in feet.
Standard: TB/T 1979-2014
Grade: Q345NQR2
Category: atmospheric corrosion resisting steel for railway rolling stock
Q345NQR2 steel specification: Thickness: 1.6mm-60mm, Width: 1000mm-4200mm, Length: 3000mm-18000mm
Chemical composition of Q345NQR2 steel
Grade |
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
|
Q345NQR2 |
≤0.12 |
0.25-0.75 |
0.20-0.50 |
0.060-0.12 |
≤0.020 |
0.25-0.50 |
0.30-1.25 |
0.12-0.65 |
Mechanical properties
Grade |
Thick, mm |
Yield strength, MPa |
Tensile strength, MPa |
Flexion ratio |
Elongation, A% |
180°Bend test |
|
Q345NQR2 |
≤6 |
≥345 |
≥480 |
≤0.75 |
≥24 |
D=a |
|
>6 |
D=2a |
Delivery status: delivered in hot-rolled or annealed state after hot-rolling. According to the agreement between the supplier and the buyer, the hot-rolled steel plate can be delivered after pickling; when the steel plate is delivered in the flat state, the four sides of the steel plate should be cut neatly and at right angles.
Scope of application
Q345NQR2 steel is widely used for containers, railway vehicles, construction machinery and construction steel structures, and structural parts.
