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Mechanical properties of galvanized sheet
Mechanical properties of galvanized sheet
(1) Tensile test:
① Performance indicators: generally speaking, only structural, tensile and deep drawing galvanized sheets have tensile performance requirements. The galvanized sheet for structure shall have yield point, tensile strength and elongation, etc; Only elongation is required for stretching. See relevant product standards in "8" of this section for specific values;
② Test method: The test method is the same as that of ordinary steel sheet. See the relevant standards provided in "8" and the test method standards listed in "ordinary carbon steel sheet".
(2) Bending test:
Bending test is the main item to measure the technological performance of thin plates, but the requirements of various national standards on various galvanized sheets are not consistent. Except for structural grade, the American standards do not require bending and tensile tests. In Japan, bending tests are required for all but structural, architectural and general corrugated plates.
Requirements: Generally, after the galvanized sheet is bent for 180 °, there shall be no separation of the zinc layer on the outer surface, and there shall be no cracking or fracture on the plate base.
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