Q345A seamless pipe is an industrial material with high test temperature for low temperature impact and good performance.
Compared with Q345B, C, D, and E steels, Q345A seamless pipes have a higher test temperature for low-temperature impact impact and better performance.
Q345A seamless pipe chemical composition
C:0.12-0.20
Si:0.20-0.60
Mn:1.00-1.60
P:≤0.045
S:≤0.045
Ni:≤0.30
Cr:≤0.30
Cu:≤0.20
V:0.02-0.15
Nb:0.015-0.06
Q345A seamless pipe mechanical properties
Tensile strength: 490-675
Yield strength: ≥345
Elongation: ≥21
Q345A seamless pipe has good comprehensive mechanical properties, good weldability, cold and hot workability and corrosion resistance, and has good low temperature toughness.
Q345A steel is mainly used in ships, boilers, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other high-load welded structural parts.
