Hot-based raw material with thickness of 0.7 mm to 2.5 mm and method for preparing low-strength galvanized sheet by using raw material

The invention provides a hot-based raw material with a thickness of 0.7 mm to 2.5 mm and a method for preparing a low-strength galvanized sheet by using the raw material. The hot-based raw material comprises the following components, in percentage by weight, of less than or equal to 0.045% of C, 0.04% to 0.05% of Si, 0.06% to 0.10% of Mn, less than or equal to 0.015% of P, less than or equal to 0.003% of S, 0.02% to 0.04% of Als, less than or equal to 0.005% of N and the balance Fe and inevitable impurities. The method for preparing the low-strength galvanized sheet by using the hot-based raw material mainly comprises the steps of scale breaking, acid pickling, leveling, heating, galvanizing, finishing and withdrawal and straightening. When the obtained galvanized sheet is applied to the industries of household appliances, elevators, doors and the like, the problems of shearing warping, bending springback, shallow punching cracking and serious zinc layer scraping of an existing hot-based raw material galvaniz