In today's A514 Gr J alloy steel plate steel market, most of the varieties are in excess of demand, especially after China's accession to the WTO, steel enterprises are facing increasingly fierce market competition. In order to make enterprises win a good survival and development space, operators must make effective use of A514 Gr J alloy steel plate market information resources to improve the scientificity of business decision-making and enhance the enterprises' domestic competitiveness Competitiveness in the external market.
Boiler steel plates are mainly used to manufacture various boilers and important accessories. Because the boiler steel plate is working under medium temperature (below 350°C) and high pressure, in addition to high pressure, it is also subject to impact, fatigue load and water and gas corrosion. It is required to ensure a certain strength and also have good welding and cold bending performance. Common grades: Q245R, A515 Grade 55, A515 Grade 60, A514 Gr J alloy steel plate, A516 Grade 65, A516 Grade 70.
The wear-resistant plate A514 Gr J alloy steel plate shows good wear resistance: the chemical composition of the alloy layer contains 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in the metallographic structure is more than 50%, the macro hardness is HRC56-62, and the hardness of chromium carbide is HV1400-1800. Because of the vertical distribution of carbides in the wear direction, the wear resistance of the cast alloy with the same composition and A514 Gr J alloy steel plate hardness is more than twice as that of the cast alloy with the same composition and hardness. Compared with several typical materials, the wear resistance is as follows: (1) compared with low carbon steel; 20-25:1 (2) with as cast high chromium cast iron; 1.5-2.5:1.
When phosphorus, copper, chromium, nickel and other trace elements are added to the steel, A514 Gr J alloy steel plate, a dense and strong adhesive protective film will be formed on the steel surface, which will prevent the corrosion from spreading and developing inward, and protect the substrate under the rust layer, so as to slow down the corrosion rate. The amorphous spinel oxide layer of about 50 μ m ~ 100 μ m thickness formed between the rust layer and the substrate is compact and has good adhesion with the substrate metal.
A514 Gr J alloy steel plate 1000 tons in warehouse5.5*3000*5000, 7*2920*8780, 7*1850*6000, 7*2920*13000, 5*2570*8000, 6*2750*9600, 5.5*2450*6500, 6*1850*7510, 6*1750*8500, 7*2560*8600, 8*1620*7870, 8*1500*4850, 8*3040*4000, 7*2920*8780, 10*1500*6850, 5*2570*8150, 6*2310*8500, 8*1700*6300, 5*2490*8200, 8*2100*7800, 10*3000*4750, 10*1750*6000, 5*2490*9000, 8*2090*6640.
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