What is medium thick Q235NH alloy steel sheet

In recent years, in line with the development trend of iron and Q235NH alloy steel sheet steel industry at home and abroad, we have accelerated the transformation of development mode, promoted structural adjustment, and formed a rich product series of medium and thick plates, hot rolled steel coils, profiles, steel pipes, etc., which Q235NH alloy steel sheet are widely used in automobiles, long-span bridges, railways, machinery, ocean and so on fields. Meanwhile, we also provide deep processing for the steel materials.

Bridge steel Q345qE medium plate stock online: 7*2150*5500, 27*2025*10570, 18*1600*6600, 22*2000*7800, 18*3200*4550, 34*1800*6000, 32*2500*5600, 35*3720*3300, 36*1900*5650, 34*3000*9000, 23*2670*11400, 22*2000*7850, 9*2260*7200, 34*1750*6230, 48*2680*4050, 48*2680*3000, 9*2070*9150, 32*1700*11744, 50*1600*3050, 58*2600*3300, 22*3000*4500, 16*3490*6980, 58*2300*3500, 11*1980*10461.

NM400 wear resistant steel plate has a very high mechanical strength; its mechanical properties are 3 to 5 times that of ordinary low alloy steel plates; it can improve the wear resistance of mechanical related parts; therefore improve the service life of machinery; reduce production costs. The surface hardness of the product Q235NH alloy steel sheet is usually Reached 360 - 450HB. NM400 wear resistant steel plate is used for processing and manufacturing of wear-resistant and wearing parts for mining and various construction machinery.

The primary purpose of adding alloy elements into steel is to improve the hardenability of steel and to ensure that martensite can be easily obtained during quenching. The second is to improve the tempering stability of the steel, to keep the martensite at a higher temperature, so that the carbide precipitated in the tempered steel is finer, uniform and stable. In this way, under the same conditions, Q235NH alloy steel sheet, alloy steel has higher strength than carbon steel. One of the main purposes of adding alloy elements is to improve the strength of steel.

Heat treatment specification and microstructure of Q235NH alloy steel sheet, 12Cr1MoV alloy plate:Heat treatment specification: quenching 970 ℃, air cooling; tempering 750 ℃, air cooling. Microstructure: bainite + ferrite.Mechanical properties of 12Cr1MoV alloy plate:Tensile strength σb (MPa)：≥490(50); Yield strength σs (MPa)：≥245(25); Elongation δ5 (％)：≥22; area shrinkage ψ (%): ≥ 50; Impact energy Akv (J): ≥ 71; Impact toughness value αkv (J/cm2)：≥88(9).

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