Bainite high-strength steel plate with different yield ratio and tensile strength as well as manufacturing method and application of bainite high-strength steel plate

The invention discloses a bainite high-strength steel plate with different yield-tensile ratios and tensile strengths and a manufacturing method and application thereof.The bainite high-strength steel plate comprises C, Si, Mn, Cr, Mo, Ti, B, Als and Fe and meets the requirement that Ti/B is larger than or equal to 10 and smaller than or equal to 25. Under a chemical component system, a product with the yield ratio of less than or equal to 0.70, the tensile strength of more than or equal to 1000MPa and the yield ratio gt can be produced; the bainite high-strength steel plate has the advantages that the bainite high-strength steel plate is high in strength, high in hardness and easy to form, and is suitable for manufacturing high-strength structural parts, such as a mixer truck tank body, which have high requirements on cold bending performance and wear resistance; and the latter has the advantages of high wear resistance, high plastic deformation resistance, high plate shape quality and the like, and is suita