Chemical element of nm500 steel datasheet material

Phosphorus element (P element) is brought into steel by ore. Generally speaking, phosphorus is also harmful element. Although phosphorus can increase the strength and hardness of NM500 steel datasheet etc. steel, it also causes the decrease of plasticity and impact toughness. Especially at low temperature, it makes steel significantly brittle, which is called "cold brittleness". The higher the phosphorus content is, the greater the cold brittleness is. Therefore, the phosphorus content in NM500 steel datasheet etc. steel is strictly controlled.

NM500 steel datasheet, The hardened wear-resistant plate is quenched and hardened as a whole, and the martensite in the metallographic structure improves the overall hardness, and the micro hardness and macro hardness are basically the same. Cemented carbide and T10, even if the macroscopic hardness of T12 steel and cemented carbide after quenching is basically the same, the wear resistance of cemented carbide is much higher than that of T12 steel, because there are a large number of carbides in cemented carbide .

The weight of seamless steel pipe is only 1 / 5 of that of square steel. Seamless steel pipe corrosion resistance acid, alkali, salt and atmospheric environment corrosion, high temperature resistance, good impact and fatigue resistance, do not need regular maintenance. The effective service life of product NM500 steel datasheet more than 15 years.

It can be predicted that in 2019, the national steel market quotation will not appear unilateral quotation, rebar NM500 steel datasheet steel main contract price of the largest shock range (the lowest price to the highest price), it is possible to reach as much as 1000 yuan this is the New Year's Chinese steel market quotation of the first characteristic. The second characteristic of Chinese steel market quotation in 2019 is that the average NM500 steel datasheet steel price of the whole year is roughly flat with the level of the previous year, or it is to rise somewhat, generally there will be no annual average price decline.