China cheap NM400 steel material price

Hydrogen (H) is the most harmful element in general steel such as NM400 steel material. Hydrogen dissolved in steel will cause hydrogen embrittlement, white spots and other defects. Hydrogen, like oxygen and nitrogen, has very little solubility in solid steel. It dissolves into liquid steel at high temperature, and accumulates in the structure without time to escape when cooling, forming high-pressure micro pores, which greatly reduce the plasticity, toughness and fatigue strength of steel, and even cause cracks and brittle fracture in severe cases. "Hydrogen embrittlement" mainly occurs in martensitic steel, but not very prominent in ferrite steel, and generally increases with hardness and carbon content.

Well known Chinese steel material supplier NM400 steel material products
5.5*2490*11000,6*3000*11000, 5.5*2560*8100, 6*3000*8500, 8*2600*10000, 10*2200*12000, 5.5*2490*9500, 9*2100*10050, 6*2690*8600, 8*1800*4700, 10*2200*12000, 6*1800*6000, 6*3000*10000, 6*2860*13000, 10*2500*12000, 6*3000*7400, 6*2960*8500, 6*2860*6300, 10*2020*4900, 6*3000*8800, 6*1700*6000, 8*2600*10000.

The company has passed the ISO9001: 2008 quality system certification, strictly implemented the ISO9001 quality management system. Besides, we have continuously improved the after-sales service network to make every effort to provide more convenient, accurate and faster services for all customers. We will supervise the production, control the quality in the factory, Inspect the cargo before shipment, Issue the test report to sales department. From the steel prodcution to steel delivery, we always focus the whole process.