TB/T 1979 Q345NQR3 weathering steel specificationStandard: TB/T 1979-2014
Material: Q345NQR3
Equivalent: 09CuPTiRE-B hot rolling
Category: corten steel, weathering steel, atmospheric corrosion resisting steel for railway rolling stock
Shapes: steel plate, steel coil and steel section
Q345NQR3 available steel size: 1.2mm to 20mm
Q345NQR3 steel meaning The first charater “Q” is the first letter of Chinese Pinyin: “Qufu”, which means Yield Strength.
The number 355 is the minimum value of yield strength 355 MPa.
NQ means the first letter of Chinese Pinyi “NaidaQifushi”, which means atmospheric corrosion resisting.
R is short for as rolled.
3 -Indicates the steel belongs to Cu, P, Ti (RE) series weathering steel.
Q345NQR3 corten steel shall be done low temperature impacting test at -40 °C with impact energy 27J for the plates thickness equal or above 12mm.
