Mechanical Properties of Q345B steel

Q345B steel is a Chinese standardized low alloy; medium tensile strength steel made with a hot-rolling process, and is used for a number of manufacturing purposes. Q345B is steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur, chromium and nickel). Q345B steel is a 'general purpose' manufacturing steel in construction equipment field, such as Q345B is basic material of making excavator bucket and long boom arms.

Q345B benefit of this grade of steel is its mild temper. It's easy to form and easy to weld.

Q345B Mechanical Properties

1. Yield Strength

Yield strength of Q345B is 345 MegaPascals. Like most steels of its grade, it suffers elongation before it pulls apart, typically at 20-21 percent of its initial length.

2. Tensile strength

The tensile strength of Q345B steel is rated at 470 to 660 MegaPascals (where mega is millions)

3. Hardness (HB)

It is one of several definitions of hardness in materials science, The typical test uses a 10 millimeters (0.39 in) diameter steel ball as an indenter with a 3,000 kgf (29.42 kN; 6,614 lbf) force, copper hardness is 35HB, Pure Aluminium is 15HB.

More detail specification about Q345B, contact Bebon Steel sales manager freely. We can solve your problems firstly.