Q345B 16MN Q355B seamless steel pipe 406*20 chemical composition, performance characteristics and uses.
1. Introduction. Q345B 16MN Q355B seamless steel pipe is a common metal material, its models and specifications are different, but they all have some common chemical composition, performance characteristics and uses. This article will introduce the chemical composition, performance characteristics and uses of Q345B 16MN Q355B seamless steel pipe in detail, so as to help readers better understand and recognize this metal material.
Second, the chemical composition.
The chemical composition of Q345B 16MN Q355B seamless steel pipe is slightly different, but their main elements and contents are basically the same. Here's a typical chemical composition list:
element | q345b | 16mn | q355b |
c | 0.20 | 0.20 | 0.20 |
si | 0.50 | 0.50 | 0.50 |
mn | 1.70 | 1.70 | 1.70 |
p | 0.035 | 0.035 | 0.035 |
s | 0.035 | 0.035 | 0.035 |
al | 0.020 | 0.020 | 0.020 |
ti | 0.25 | 0.25 | 0.25 |
nb | 0.11 | 0.11 | 0.11 |
v | 0.12 | 0.12 | 0.12 |
mo | 0.12 | 0.12 | 0.12 |
ni | 0.60 | 0.60 | 0.60 |
cu | 0.35 | 0.35 | 0.35 |
cr | 0.35 | 0.35 | 0.35 |
co | 0.25 | 0.25 | 0.25 |
b | 0.005 | 0.005 | 0.005 |
3. Performance characteristics.
Q345B 16MN Q355B seamless steel pipe has excellent mechanical properties and corrosion resistance, and the specific characteristics are as follows:
1.High strength: It has high yield strength and tensile strength, and can withstand large loads.
2.Good toughness: It has good toughness at low temperatures and is not easy to brittle.
3.Corrosion resistance: It has good corrosion resistance in corrosive media such as acid, alkali salt, etc.
4.Good welding performance: easy to weld, and the welding quality is stable and reliable.
5.Good processing performance: It can be used for cutting, bending, drilling and other processing operations.
Fourth, use. Q345B 16MN Q355B seamless steel pipe is widely used in petrochemical, electric power, marine engineering, shipbuilding, machinery and equipment and other fields. It is mainly used in the manufacture of pressure vessels, pipelines, bridges, ships and other components that require high strength and corrosion resistance. In addition, it can also be used to manufacture medical devices, precision instruments and other components that require high precision.