Q415NHC weathering steel plate, Q415NHE low-temperature weathering plate fixed rolling, Q415NHD high

Q415NHC weathering steel plate, Q415NHE low-temperature weathering plate fixed rolling, Q415NHD high

Q415NHC weathering steel plate

Q415NH, the initial letter Q stands for yield; Its yield strength is 415MPa; NH stands for Weather Resistance; It has the characteristics of rust resistance, corrosion resistance, life extension, thinning and consumption reduction, labor saving and energy saving; It is mainly used for railway vehicles and containers.

Q415NHE steel plate rolling: In order to ensure the performance of the product, Wugang Xiangyang

adds suitable strengthening elements such as Mn and Nb to the general chemical composition design, and at the same time adds corrosion-resistant elements such as Cr, Ni and Cu, and these alloying elements are added at the same time, which greatly improves the hardenability of steel.

In particular, the Cr element plays a great role in improving the hardenability, and the development of this product is difficult due to the large cooling rate of the hard phase structure similar to bainite, which deteriorates the toughness and plasticity due to the excessive cooling rate of rolling production.

It is not only necessary to design the appropriate composition, but also to formulate a reasonable rolling process and cooling process, control the microstructure type and microstructure score of the product, and meet the high strength and high plastic toughness.

Q415NHC mechanical properties

: Grade:

Yield strength

, tensile strength, Rm

elongation after break, A50mm%

Q415NH

≥415MPa

520-680

≥22

Q415NHD weathering steel features

During the use of weathering steel, a dense and firmly attached corrosion product protective film will be gradually formed on the surface to prevent further corrosion of the substrate by oxygen, water and other corrosive media in the atmosphere, so that the corrosion rate is greatly reduced compared with carbon steel. Due to its high strength and reasonable price, the production cost is much lower than that of stainless steel.

Characteristics of Q415NHC weathering steel: it has the characteristics of high-quality steel, such as toughness, plastic ductility, forming, welding, abrasion, high temperature, fatigue and so on; It has the characteristics of rust resistance, corrosion resistance, thinning and consumption reduction, labor saving and energy saving, and prolongs the service life