Dongyang sun of Steel Materials Co., to introduce you to the strength of steel materials, plastic and (4) Determination of hardness and determination, steel material to resist local deformation small villa prices, particularly plastic deformation, indentation or scratching capacity is measured on the basis of hard and soft metal, known as hardness. Hardness test is simple, rapid, not necessarily a special sample and not destroy the parts, based on the measured hardness values, but also to estimate the approximate strength values ??of metal materials, which are widely used. Hardness also affects the wear resistance of the material, in general, the higher the hardness of the metal factory direct small villa, wear resistance is also possible. The method for determining hardness many small villas, the most commonly used are Brinell hardness test, Rockwell hardness and Vickers hardness testing method testing method. For example; Brinell hardness test is based on a certain diameter of the ball or carbide ball, with a corresponding surface of the sample into the test force small villa Which is good, by the provision to maintain a certain time after removing the test force, the surface measurements diameter of the indentation hardness of computing an indentation test. Dongyang sun of Steel Materials Co., to introduce you to fire safety of steel structures. Shield. Steel is set in the wall or ceiling of refractory material, or component occluded in the space between the two walls, as long as the increase or not to increase a little refractories that can achieve the purpose of fire prevention. This is one of the most economical methods of fire. Small villa where to buy | sun of steel material strength of the brand | Yiwu small villa provided by the sun of Dongyang Steel Materials Co., Ltd. Dongyang sun of Steel Materials Co. (www.dysdjg.com) Zhejiang Jinhua, steel leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the sun of steel material led the staff warmly welcome all inquiries negotiations to create the sun of Steel Materials a better future.