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Steel plate Q450NQR1

Product Details

Steel plate Q450NQR1

Q450NQR1 material is outdoor steel and weathering steel for containers, power plant chimneys, and railway projects, such as steel for large outdoor sculptures. Weathering steel (that is, atmospheric corrosion resistant steel) is a series of low-alloy steels between ordinary steel and stainless steel at a low price and good quality. After incorporating modern metallurgical new mechanisms, new technologies and new processes, it can achieve sustainable development and innovation, and belongs to the world.
The main advantages of the chemical composition of Q450NQR1 steel is made of plain carbon steel with a small amount of copper, nickel and other corrosion-resistant elements. It has the characteristics of steel strength, ductility, forming, welding, abrasion, high temperature, fatigue, etc.; weather resistance is 2~8 times that of normal carbon steel, and 1.5~10 times of coating performance of normal carbon steel, which can be used in thinner, bare or simplified coating. The steel has the characteristics of rust resistance, corrosion resistance and longevity of components, thinning and consumption reduction, and labor and energy saving, which benefit component manufacturers and users.
The main feature of Q450NQR1 material refers to low-alloy structural steel with protective rust layer and atmospheric corrosion resistance, which can be used to manufacture steel structures such as vehicles, bridges, towers, containers, etc. Compared with carbon steel, weathering steel has better corrosion resistance in the atmosphere. Compared with stainless steel, weathering steel has only a small amount of alloying elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc. The total amount of alloying elements is only a few percent, unlike stainless steel, which reaches 100%. Ten per cent, so the price is relatively low.

Steel plate Q450NQR1 chemical composition

Q450NQR1  Chemical composition
Grade                 The Element Max (%)
C Si Mn P S
Q450NQR1  0.12 0.4 0.70-1.50 0.02 0.008
Cr Cu Ni Nb
0.40-0.90 0.25-0.45 0.05-0.40

Steel plate Q450NQR1 physical properties

Grade Thickness Yield Tensile Elongation
Q450NQR1 mm Min Mpa Mpa Min  %
450 550 22

Steel plate Q450NQR1 specification

Product Name

Jis G3125 Spa-H Weathering Steel Plate Exterior Decoration S355 /Q450nqr1 Weathering Steel Plate


as required


0.6m-3m or as required


3mm-120mm or as required




Hot rolled

Thickness tolerance



09CuPCrNi-A,09CuP, 09CuPCrNiA, 09CrCuSb Q355NH,Q460NH,







High strength weathering steel has been used in bridge engineering.It can also be used in the floor board,containers, power plant chimneys, railway engineering and other outdoor steel, such as large outdoor sculpture steel.


20tons.We also can accept sample order.

Shipment time

Within 10-20 workdays after receiving deposit or L/C

Export packing

Waterproof paper, and steel strip packed.

Standard Export Seaworthy Package.Suit for all kinds of transport,or as required


5000tons/ month

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