302 for using screws and self-tapping screw machining. 303 In order to improve cutting performance, type 303 stainless steel add a small amount of sulfur, 304 stainless steel screws for use bar machining nut. 304 is suitable for hot upsetting when machining stainless steel screws, bolts specifications such as long, large diameter bolts, they are likely to go beyond the scope of cold heading process. 305 is suitable for cold heading process when machining stainless steel screws, such as cold forming nuts, hex bolts. 309 and 310, Zibo 304 stainless steel screws, they Cr content and Ni content higher than 18-8 stainless steel, stainless steel screws for high temperature work. Material Category austenitic stainless steel: austenitic stainless steel is the most basic alloying elements chromium and nickel grades are typically about 18 percent chromium, nickel about 8% of the Cr-Ni austenitic stainless steel, often called as 18-8 stainless steel. The ratio of the element chromium and nickel to ensure the organization basically is stable austenitic steels. Cause stainless steel screws fracture as follows: 1. stainless steel screws quality raw materials used, Qingdao 304 stainless steel screws, stainless steel screws wire good quality. There are a lot of impurities, impure, Linyi 304 stainless steel screws, resulting in insufficient hardness of stainless steel screws. 2. The production of stainless steel screws process issues. For example, migraine eccentric stainless steel screws, as well as production and manufacturing jobs nowadays punch Q value is too deep and too small R-bit designs. 3. Customers in the use of stainless steel screws, excessive force. Usually you do the next torque minimum breaking strength test to see how much, and then you can adjust the torque. 304 stainless steel screws | Jinan Daoqin | Linyi 304 stainless steel screws provided by Jinan Daoqin Trading Company. 304 stainless steel screws | Jinan Road ground | 304 stainless steel screws Linyi Jinan Road ground Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Chuan-use.