The grade of No.1 steel is composed of the letter wh, tensile strength value, quenching and tempering symbol Q and quality grade symbol, which represents wide and thick plate of Wuyang Iron and Steel Co., Ltd. It is widely used in all kinds of machinery, construction, vehicles, important structural parts of ships.
Brand introduction
In order to meet the development requirements of large-scale and lightweight, Quenched and tempered steel is developing to a higher strength level. Meanwhile, higher requirements are put forward for the shear property, weldability, lamellar tear resistance and aging sensitivity of quenched and tempered steel. The quenched and tempered steel WH80Q developed by Wugang has high strength, good low temperature i***ct toughness, lamellar tearing resistance and low aging sensitivity coefficient. The steel adopts the chemical composition design of low carbon and low alloy, and uses controlled rolling and controlled cooling technology, which makes WH80Q have lower carbon equivalent and welding crack sensitivity coefficient than traditional quenched and tempered steel.
chemical composition
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The chemical composition (melting analysis) of steel shall meet the following requirements:
Chemical composition of WH80Q steel plate WT,%
C Si Mn P S Mo Nb B Ni Cr Ti V
¡Ü0.15 0.15~0.50 0.80~1.80 ¡Ü0.020 ¡Ü0.010 ¡Ü0.60 ¡Ü0.07 ¡Ü0.003 ¡Ü1.20 ¡Ü0.80 ¡Ü0.03 ¡Ü0.08
Note: (1) the supplier can add other trace elements.
(2) The calculation formula of CEQ ¡Ü 0.60% CEQ is CEQ (%) = C + Mn / 6 + (Mo + Cr + V) / 5 + (Ni + Cu) / 15
mechanical property
The test results of mechanical properties of steel plate shall meet the following requirements:
Mechanical properties of WH80Q steel plate
Specification, mm rp0.2*** rm*** a% Akv (vertical) - 20 ℃, J cold bending
¡Ü50 ¡Ý685 ¡Ý760 ¡Ý14 ¡Ý34 d=3a
>50-120 ¡Ý665
Element action
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The development of modern high strength steel is a process of gradually reducing the carbon content. The reduction of carbon content can improve the toughness of steel on on |
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