With the increase of corrosion time, the corrosion rate of Q355NH steel and contrast steel decreases, and the long-term corrosion behavior has the same trend. This is related to the electrochemical reaction process about Q355NH steel plate in the industrial atmospheric environment.
The corrosion resistance of Q355NH steel plate is obviously superior to that of q345b steel, which is equivalent to that of ASTM A 588 Gr.A steel.
Both Q355NH steel plate and ASTM A 588 Gr.A steel contain Cu, Cr, Ni and other alloying elements. The good corrosion resistance of the alloy can not be separated from these alloy elements and rust layer structure.
The mechanical properties of Q355NH steel plate meet the technical requirements. The Q355NHsteel plate has high strength, low thickness effect, excellent low temperature impact property and excellent welded joint performance.
After the successful trial production of Q355NH steel, more than 5 000 tons of batch production has been applied to the bridge between Hong Kong, Zhuhaiao and Macao, Lanzhou Xigu Bridge and some urban road bridges. The Q355NH steel plate with excellent quality and fully meet the technical requirements of the customers.
Katalor as a professional steel supplier and exporter in China, we can supply the Q355NH steel plate with good quality and best service. If you are interested in Q355NH steel plate, please contact us freely. We will reply you at first time and give you the best price.
