Stainless steel screws selection principles: choice of stainless steel materials, mainly from the following five aspects to consider. 1, stainless steel screw material in mechanical properties, particularly strength requirements; 2, do work conditions on the material aspects of corrosion resistance requirements; 3, the working temperature of the material heat resistance (high-temperature strength, oxidation resistance ) requirements; 4, the production process for material processing performance requirements; 5, other aspects, such as weight, price, purchase, and many other factors must be taken 316 and 317, which contain alloying elements Mo, so their high temperature strength and corrosion resistance than 18-8 stainless steel high. 321 and 347 type 304 stainless steel screws, 321 contain more stable alloying elements Ti, 347 type containing Nb, high green 304 stainless steel screws, thereby increasing the resistance to intergranular corrosion of materials. Not annealed or stainless steel fasteners in 420 ~ 1013 ℃ after serving applies to welding. Cause stainless steel screws fracture as follows: 1. the raw materials used stainless steel screws quality problems, poor quality stainless steel screws wire. There are a lot of impurities, impurities, resulting in insufficient hardness of stainless steel screws. 2. The production of stainless steel screws process issues. For example, migraine eccentric stainless steel screws, Boshan 304 stainless steel screws, as well as punch when manufacturing jobs nowadays 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 | Zaozhuang 304 stainless steel screws provided by Jinan Daoqin Trading Company. 304 stainless steel screws | Jinan Road ground | 304 stainless steel screws Zaozhuang 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.