Comparative Research on Properties of High-strength AH32 Uncoiled and Leveled Plate and AH32 Medium Plate

Comparative research on mechanical properties（including tensile strength,yield strength,elongation and residual stress） and the microstructure of AH32 uncoiled and leveled plates produced with new process and conventional AH32 medium plates in the thickness range of mm, mm, mm, mm was carried out.The test results show that both of the tensile strength and yield strength of AH32 uncoiled and leveled plates at the transverse direction are higher than those at longitudinal direction while its elongation is better at longitudinal direction;both of the tensile strength and yield strength of AH32 medium plate are similar at the two directions while its elongation is a little better at longitudinal direction.It can be concluded that the mechanical properties of AH32 uncoiled and leveled plate are better than those of the medium plate in the same size range.The difference in mechanical properties between longitudinal and transverse directions may be attributed to the different deformation of the plates in the two directions.