Usually used as a decorative tube plate is austenitic stainless steel most 304, Shandong 304 stainless steel screws, in general, is a non-magnetic or weakly magnetic, but the chemical composition fluctuations caused by smelting or processing may occur in different magnetic state, Shandong stainless steel screws, but it can not be considered counterfeit or substandard, which is what causes it? The above mentioned austenite is non-magnetic or weakly magnetic, and martensite or ferrite is magnetic, due to improper heat treatment smelting segregation or will result in a small amount of austenitic 304 stainless steel martensite or ferrite body tissue. Thus, 304 stainless steel will be having a faint magnetic. One of the mechanical properties of stainless steel or heat resistant steel plate regardless of overall performance austenitic steel has the best of both adequate strength, have excellent hardness plastic while not high, and this is the reason they are widely used . The vast majority of austenitic stainless steel with other materials like metal, its tensile strength, yield strength and hardness, with decreasing temperature; plasticity is reduced as the temperature decreases. The tensile strength increase in the temperature range of 15 ~ 80 ° C is relatively uniform. More importantly: stainless steel screws with decreasing temperature, slowly reducing its impact toughness, there is no brittle transition temperature. So stainless steel at low temperature to maintain sufficient plasticity and toughness. In particular to make is that Shandong 316 stainless steel screws, magnetic 304 stainless steel due to the above reasons, and other materials of stainless steel, stainless steel screws Shandong cotter pins, such as 430, magnetic steel is not at the same level, ie 304 magnetic steel always shows weak magnetism. This tells us that if the weak magnetic stainless steel or entirely without magnetic, should be 304 or 316 is determined; if the magnetic steel of the same, showing ferromagnetic, because discrimination is not 304. Shandong stainless steel screws stainless steel screw bolt _ _ Shandong Jinan Road ground is provided by Jinan Daoqin Trading Company. Jinan Daoqin Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) strong, credible, in Jinan, Shandong hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinan Road ground into the brilliant and you work for a better future!