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14Cr1MoR steel plate is suitable for petrochemical, nuclear power, steam turbine cylinder block, thermal power and other high-temperature and high-pressure large-scale equipment that is connected to hydrogen or hydrogen mixed media. Chemical element composition of A514 Gr S alloy steel plate container plate: C: 0.05%-0.17% Si: 0.50%-0.80% Mn: 0.40%-0.65% P: 0.010%-0.012% Cr: 1%-1.5% Mo: 0.45%-0.65% Ni: 0.20%-0.25%
There is an inherent difference between the cold forming properties of low-alloy high-strength steel and carbon structural steel. First of all, a certain amount of permanent deformation of low-alloy high-strength steel requires greater force than A514 Gr S alloy steel plate, carbon structural steel of the same size. Second, when low-alloy high-strength steel is formed, a slightly larger allowable amount for springback should be given. According to experience, unless the low-alloy high-strength steel is processed to control the shape of inclusions, it is necessary to use a larger bending radius than carbon structural steel during cold forming.
According to GBT3077, 42CrMo steel chemical composition should be within the range (%): 42CrMo carbon content is 0.38-0.45 (C), Silicon content is 0.17-0.37 (Si), Manganese content is 0.50-0.80 (Mn), Chrome content is 0.90-1.20 (Cr), Molybdenum content is 0.15-0.25 (Mo). The high Cr content contrivutes to high strength of 42CrMo steel, with min. yield strength of 930 Mpa, and min. tensile strength of 1080 Mpa. The common heat treatment for A514 Gr S alloy steel plate, 42CrMo steel is quenching and tempering.
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