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Nigeria abrasion resistant steel NM400 Hot Rolled Plate Price 2021


Alloying elements, especially Mn, Ni, Cr, Mo and B (trace elements), can increase the hardenability of the abrasion resistant steel NM400 steel, so as to obtain a deeper hardened layer and adopt a slower quenching cooling rate. Alloying elements, especially Si, Mo, V and W, improve the tempering stability of the abrasion resistant steel NM400 steel to slow down the tempering softening effect. When the content of W, Mo and V is high, secondary hardening will occur during quenching and tempering, so as to improve the hot hardness of the steel.

The main applications of abrasion resistant steel NM400, wear plates: 1. Mining machinery and equipment. 2. Construction machinery and equipment, such as excavators, shovel, sand making machines, etc.. 3. Laying on the ground, wear-resistant plates will be laid on the roads of some construction sites. 4. Construction equipment, excavation machinery, earth moving machinery, compaction machinery, engineering lifting machinery, piling machinery, etc. are all in contact with various kinds of sediment for a long time, and need the support of wear-resistant plates. There are also many equipment that runs repeatedly and frequently, and wear plates are needed.

Oxygen is a harmful element in abrasion resistant steel NM400 steel. With the increase of oxygen content, the strength of abrasion resistant steel NM400 steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of abrasion resistant steel NM400 steel.

Japan's crude steel production is expected to fall 25.9% in the April June quarter from a year earlier, the Ministry of Economy, Trade and Industry said Thursday. The Ministry of Economy and Industry quoted an industry survey report as saying that the demand for abrasion resistant steel NM400 and so on steel products (including export products) in April June is expected to drop 18.1% to 18.28 million tons from the same period last year. At the same time, steel exports in the current quarter will decline by 21.4% year-on-year.

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