1. Tensile test
(1) Performance index: Generally speaking, only the galvanized sheets for structural, drawing and deep drawing have tensile performance requirements. Among them, the galvanized sheet for structure requires yield point, tensile strength and elongation, etc.; for stretch, only elongation is required. For specific values, please refer to the relevant product standards in "8" of this section;
(2) Test method: the same as the general thin steel plate test method, see the relevant standards provided in "8" and the test method standards listed in "Ordinary carbon steel thin steel plate".
2. Bending test
The bending test is the main item to measure the technological performance of the thin plate, but the requirements of various national standards on various galvanized sheets are not consistent. Except for the structural level, the American standards do not require bending and tensile tests. In addition to the structural grade, building corrugated board and general corrugated board in Japan, bending tests are required.
Requirements: It is generally required that after the galvanized sheet is bent 180°, no zinc layer should be detached from the outside surface, and the sheet base must not be cracked or broken.
