
Main properties of 20CrMn steel plate: high strength and toughness, and good hardenability. The performance obtained after heat treatment is better than 20Cr. The quenching deformation is small, the low temperature toughness is good, and the machinability is good; but the welding performance is low. Generally used after carburizing, quenching or quenching and tempering. 20CrMn steel is used for manufacturing and heavy-duty hardened and tempered parts with large cross section and carburized parts with small cross section.
BEBON Iron & Steel has fully passed the ISO9001 quality system certification, marine steel has passed 9 countries' classification societies, and construction steel has obtained the CE Lloyd's CE Mark certification. The main body of P265GH pressure vessel steel sheet steel passed ISO14001 environmental management system certification and OHSAS18001 occupational health and safety management system certification. The main P265GH pressure vessel steel sheet production processes and technical equipment of the enterprise have reached the international advanced level, the comprehensive competitiveness has entered the international advanced ranks, and the international influence has been significantly enhanced.
We BBN steel company have in-house machining capabilities with excellent machining experience. CNC machining-technology, We provide P265GH pressure vessel steel sheet plate products both conventional and CNC machining services to offer the following machined processes :lathe turning, milling, up to 5 axis cnc, grinding, surface, od and id, threading, single point and grinding, drilling, reaming, and tapping, boring.
With the increase of temperature, the yield limit of P265GH pressure vessel steel sheet will decrease monotonically, but the tensile strength of P265GH pressure vessel steel sheet will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of P265GH pressure vessel steel sheet. Near the blue brittleness temperature, the P265GH pressure vessel steel sheet strength increases and the plasticity decreases. The elongation and section shrinkage of P265GH pressure vessel steel sheet increase with the increase of temperature, but there is a low peak at the blue brittleness temperature. The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃. The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher.
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