Chinese galvanized steel prices

2018-05-14

The mechanical properties of galvanized steel are an important indicator of the end-use performance (mechanical properties) of the steel. It depends on the chemical composition of the steel and the heat treatment system. In the steel pipe standard, tensile properties (tensile strength, yield strength or yield point, elongation), and hardness and toughness indexes, as well as high and low temperature performance required by users, are stipulated in accordance with different application requirements. The ability of a metal material to resist the collapse of a hard object is called hardness. According to the test method and application range, the hardness can be divided into Brinell hardness, Rockwell hardness, Vickers hardness, Shore hardness, microhardness and high temperature hardness. For the pipe commonly used are Brinell, Rockwell, Vickers hardness three. A. Brinell Hardness (HB) Using a certain diameter steel ball or cemented carbide ball, press the sample surface with the specified test force (F), remove the test force after the specified holding time, and measure the indentation on the sample surface. Diameter (L). The Brinell hardness value is the quotient obtained by dividing the test force by the ball surface area of the indentation. Expressed in HBS (steel ball), the unit is N/mm2 (MPa).

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