What is the price of Q550NH steel plate for construction machinery grade per ton in Shanghai, China

The company has always adhered to the principle of "genuine goods at low prices", put an end to the sale of fake and shoddy Q550NH steel plate for construction machinery grade products, do not deceive customers, treat customers in good faith, truly consider for customers and give advice. To provide reference opinions, and to treat customers with integrity. Consequently, we have won a lot of Q550NH steel plate for construction machinery grade stable cooperated customers over the years in the international market. Our steel materials are widely used in power stations, bridges, ship manufacturing, offshore platforms, heavy machinery, oil and gas pipelines, tanks and so on fields.

316 Vs 304: ASTM 316L(1.4404) is a low-carbon austenitic chromium-nickel-molybdenum steel. Due to the addition of 2-2.5% molybdenum, the corrosion resistance of the stainless steel 316L is significantly better than that of the standard austenitic grades 304 and 304L, Q550NH steel plate for construction machinery grade. The 1.4404 material is resistant to intercrystalline corrosion when welded! but not resistant to sea water. Best corrosion resistance is given with a polished surface. This material is comparable to 1.4401.

The wear-resistant layer of Q550NH steel plate for construction machinery grade wear-resistant steel plate is mainly composed of chromium alloy, and other alloy components such as manganese, molybdenum, niobium and nickel are added. The carbide in the microstructure is distributed in the form of fiber, and the direction of the fiber is perpendicular to the surface. The microhardness of carbides can reach hv1700-2000 and HRC58-62 respectively. The alloy Q550NH steel plate for construction machinery grade carbide has strong stability at high temperature, high hardness and good oxidation resistance. It can be used normally within 500 ℃.

Low alloy high strength steel is a kind of engineering structural steel developed by adding a small amount of Mn, Si and a small amount of Nb, V, Ti, Al and other alloy elements on the basis of carbon structural steel, Q550NH steel plate for construction machinery grade. The so-called low alloy means that the total amount of alloying elements in steel is less than 3%. High strength is relative to carbon engineering structural steel. The development principle of low alloy high strength steel is to use as few alloy elements as possible to obtain as high comprehensive mechanical properties as possible, so as to meet the requirements of use and low cost.

The difference of chemical composition between Q550NH steel plate for construction machinery grade, Q420D steel and Q460D steel:
Chemical composition of Q420D steel: C ≤ 0.20, Si ≤ 0.50, Mn ≤ 1.70, P ≤ 0.030, S ≤ 0.025, Nb ≤ 0.07, V ≤ 0.20, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.80, Cu ≤ 0.30, N ≤ 0.015, Mo ≤ 0.20, Al ≥ 0.015. Chemical composition of Q460D steel: C ≤ 0.20, Si ≤ 0.60, Mn ≤ 1.80, P ≤ 0.030, S ≤ 0.025, Nb ≤ 0.11, V ≤ 0.20, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.80, Cu ≤ 0.55, N ≤ 0.015, Mo ≤ 0.20, B ≤ 0.004, Al ≥ 0.015.
The difference of mechanical properties between Q550NH steel plate for construction machinery grade, Q420D steel and Q460D steel:
The mechanical properties of Q420D steel: yield strength ≥ 420 MPa, tensile strength 500-680 MPa. The mechanical properties of Q460D steel: yield strength ≥ 460 MPa, tensile strength 500-720 MPa.

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Relying on the background of high-quality steel resources and its own strong steel machining capabilities, BBN comany can not only supply various steel material products, such as steel coils, steel plates, Q550NH steel plate for construction machinery grade sheet, steel pipes, and shaped steels, but also provide a variety of steel deep processing services like cutting, welding and grinding. Through continuous technological innovation and after-sales service optimization, the company has its own world on the domestic and international steel industry stage!