Xiamen screw parts:What is the little knowledge of the material used for screws?

Sometimes small things, but also can play a big role, a small volume, but can radiate a million light, with a different charm, perhaps this is what makes it different, the screw is one of them, its volume is also very small, so what is the screw with material knowledge? The following let Xiamen screw parts of the editor to understand with you.

 Carbon steel. Screws to carbon steel material in the carbon content to identify low carbon steel, medium carbon steel and high carbon steel and alloy steel.

 Low carbon steel C% ≤ 0.25% domestic usually called A3 steel. Foreign simply called 1008, 1015, 1018, 1022, etc.. Mainly used for 4.8 grade bolts and 4 grade nuts, small screws and other products without hardness requirements.

 Medium carbon steel 0.25%.

 High carbon steel C%>0.45%. At present, the market is not used at all.

 Gold steel: in the ordinary carbon steel to participate in the alloying elements to increase some special properties of steel: such as 35, 40 chromium-molybdenum, SCM435, 10B38. screws are mainly used SCM435 chromium-molybdenum alloy steel, the main components are C, Si, Mn, P, S, Cr, Mo.

 Stainless steel. Performance grade: 45, 50, 60, 70, 80

 Mainly divided into austenitic good heat resistance, good corrosion resistance, good weldability. A1, A2, A4

 Martensite, 13% Cr poor corrosion resistance, high strength, good wear resistance. C1, C2, C4 ferritic stainless steel. 18% Cr upsetting better, corrosion resistance stronger than martensite. At present, the screw import information is mainly Japanese products. By grade mainly SUS302, SUS304, SUS316.

 Brass. Screws commonly used information for brass ... zinc-copper alloy. The market mainly uses H62, H65, H68 copper for specification parts.

 The above is a small knowledge of the material used for screws, from the above short article, it can be seen that it is very good, with a very good material, good material can produce good products, good quality.