What is the difference between carbon steel Q235B and TMCP A131 EH36 offshore structure steel

What is the difference between carbon steel Q235B and TMCP A131 EH36 offshore structure steel

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Q420B material is a low-alloy high-strength structural steel. TMCP A131 EH36 offshore structure steel, Q420 is not high-strength steel, it is still low-carbon steel. Its tensile strength has been improved a bit. The tensile strength of Q235 steel is 235MPa, and the tensile strength of Q420B steel is 420MPa. Q420B low alloy steel has high strength and good fatigue resistance; high toughness and low brittle transition temperature; good Cold forming performance and welding performance; has good corrosion resistance and certain wear resistance.

The thickness of cold-rolled steel sheets is generally relatively small, and the thickness of hot-rolled plates can be larger. The surface quality, appearance, and dimensional accuracy of cold-rolled steel sheets are better than those of hot-rolled plates, and the thickness of cold-rolled steel sheets can be rolled as thin as about 0.18mm. TMCP A131 EH36 offshore structure steel, Hot-rolled plates has high strength, good toughness, easy processing and good weldability and other excellent properties.

The microstructure of the quenched and tempered alloy steel, TMCP A131 EH36 offshore structure steel after conventional heat treatment is tempered sorbite. For parts with wear-resistant surface (such as gears and spindles), induction heating surface quenching and low-temperature tempering are carried out, and the surface structure is tempered martensite. The surface hardness can reach 55HRC-58HRC. After quenching and tempering, the yield strength of quenched and tempered alloy steel is about 800MPa, the impact toughness is 800kJ / m2, and the core hardness is 22HRC - 25HRC. If the cross-section size is large but not quenched, the properties will be significantly reduced.

BBNsteel shipbuilding steel plate TMCP A131 EH36 offshore structure steel for sale: 17*1640*9880, 17*2050*6000, 15.5*2800*8200, 16.5*2770*7200, 17*2790*5700, 19.5*2980*5300, 17.5*1550*8100, 16.5*1500*8750, 18*1500*7000, 17.5*3100*6350, 20*2880*5830, 17.5*2000*10000, 17*2970*6200, 18*1500*7230, 18*2450*5500, 17.5*2320*13000, 17.5*1750*10400, 18*2810*4200, 18*2520*5000, 20*3000*7500, 18.5*2600*10800.

We are engaged in TMCP A131 EH36 offshore structure steel corten steel, weathering steel, atmosphere corrosion resistant steel materials. After receiving your inquiry about the weathering steel, we will make quotation for you at the first time. Meanwhile, our professional team can give you valuable answers about all kinds of question about the weathering steel. For example, corten steel cost per square foot, S355J2WP equivalent, TMCP A131 EH36 offshore structure steel ASTM A242 steel properties, A588 steel yield strength, etc. If you have any demands or questions about weathering steel, please feel free to contact us.

Due to other non-steel quality reasons caused by the customer dissatisfaction, to timely explain to the customer, and help them solve the problem, for the customer really because of their own reasons, to give patient reply.The process of objection handling is the process of our technical service.

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