What’s the property of steel Q450NQR?

Q450NQR1 weathering steel plate, as a new type of weathering steel plate, is characterized by low phosphorus, high strength and high low temperature impact toughness. It has a wide range of applications.For the property of steel Q450NQR, please check the following detail. 

The corrosion resistance

The characteristics of the weathering steel plate are the protective rust layer and atmospheric corrosion resistance, which can be used to make low-alloy structural steel for steel structures such as vehicles, bridges, towers, and containers. At the same time, it has the characteristics of rust resistance, corrosion resistance and life extension, thinning and consumption reduction, labor saving and energy saving. Compared with ordinary carbon steel, weathering steel has better corrosion resistance in the atmosphere. Compared with stainless steel, weathering steel only has trace alloying elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc. The total amount of alloying elements is only a few percent, which is different from stainless steel, reaching 10 percent. Therefore, the price of weathering steel plate is relatively cheap and cost-effective, so it is worth choosing.
 
450NQR1 material is a high-strength weathering steel with a yield strength of more than 450 MPa, which is mainly alloyed with Cu, Cr, and Ni. Its atmospheric corrosion resistance is one of the important indicators that determine the performance. The accelerated corrosion test is usually used to characterize the weathering resistance of weathering steel by weight loss method. The accelerated corrosion performance of high-strength atmospheric corrosion-resistant steel Q450NQR1 and ordinary carbon steel Q345qD was compared and studied by periodic infiltration simulation accelerated corrosion test, and the phase composition of the rust layer was analyzed by XRD. The results show that under the test conditions, the weight loss rate and weight loss rate of Q450NQR1 is significantly lower than that of ordinary carbon steel Q345qD. Q450NQR1 is mainly composed of the protective α-FeOOH phase. This rust layer provides a good Stable protection.
 
Q450NQR1 steel plates, Q450NQR1 steel sheets and Q450NQR1 steel angles are available in Katalor Industry. Welcome to come and visit our factory.