(1) Inspection Method:
The tensile test is one of the most commonly used methods for material inspection. It follows various international standards, such as GB/T 228-87, JIS Z2201, JIS Z2241, ASTM A370, GOST 1497, BS 18, and DIN 50145. These standards define the procedures for conducting tensile tests, including sample preparation, loading rates, and measurement of key properties like yield strength and ultimate tensile strength. Another important method is the bending test, which evaluates the ductility and flexibility of the material. Commonly used standards for this include GB/T 232-88, JIS Z2204, JIS Z2248, ASTM E290, GOST 14019, and DIN 50111. These tests are essential in determining how well a material can withstand deformation without breaking.
(2) Performance Index:
When evaluating the performance of angle steel, the primary inspection items are tensile and bending tests. Key performance indicators include the yield point, which is the stress at which a material begins to deform plastically; tensile strength, which is the maximum stress it can withstand before failure; elongation, which measures the degree of plastic deformation before fracture; and bend qualification, which assesses the material's ability to be bent without cracking. These parameters help determine the overall quality and suitability of angle steel for specific engineering applications.
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