What is the difference between p355gh sheet material and 4140 metals

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P355GH sheet material 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.

The difference between p355gh sheet material, hot rolled sheet and cold rolled sheet: hot rolled sheet has low hardness, easy processing and good ductility. The cold-rolled sheet has high hardness and relatively difficult processing, but it is not easy to deform and has high strength. The cold rolled sheet is mostly used in automobile manufacturing and electrical products. Therefore, the two have their own characteristics. According to these characteristics, it is more appropriate to choose the right rolled plate to maximize its effect and benefit.

It is reported that during the period from the end of 2018 to the first quarter of 2019, some Japanese long process steel mills encountered a series of production line equipment failures, resulting in the overall output decline. Japanese p355gh sheet material steel mills must give priority to domestic customers, so the export volume in the first half of last year was relatively small. Meanwhile, in the first half of the year, Japan's imports of general p355gh sheet material steel were about 2.079 million tons, down 16.4% year-on-year; imports of special steel were about 332000 tons, down 14.2% year-on-year.

Oxygen is a harmful element in p355gh sheet material steel. With the increase of oxygen content, the strength of p355gh sheet material steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of p355gh sheet material steel.