Q345b is a material of steel. It is low carbon alloy steel (c<0.2%), good performance, low temperature performance, cold stamping performance, welding performance and cutting performance is good.
Q represents the yield of this material, the back of the 345, refers to the material yield value, around 345MPa. And the yield value decreases with the increase of the thickness of the material.b means semi-sedative steel
Yield Strength:
t≤16mm: Greater than 345,
16-40mm: Greater than 335,
40-63mm: Greater than 325,
63-80mm: Greater than 315,
80-100m: Greater than 305,
100-150mm: Greater than 285,
150-200mm: Greater than 275.
Tensile strength: 450-630.
Elongation ratio: greater than 17.
Impact test: Test temperature: 20 ℃: Greater than 34.
Q345b steel product Application：
Q345b widely used in bridges, vehicles, ships, buildings, pressure vessels and so on. And for hot rolling, controlled rolling, normalizing, normalizing and quenching state supply of engineering Q345b steel and general structure with a thickness of not less than 3mm Q345b steel plate, steel strip and steel bar.
