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, 321 contain a more stable alloy elements Ti, 347 type containing Nb, thereby increasing the resistance to intergranular corrosion of materials. Not annealed or stainless steel fasteners in 420 ~ 1013 ℃ after serving applies to welding. Austenitic stainless steel compared to carbon steel, having the following characteristics: 1) high electrical female ratio is about five times the carbon steel. 2) a large linear expansion coefficient, 40% larger than carbon steel, and as the temperature rises, anchor bolts, stainless steel screws numerical linear expansion coefficient of stainless steel also increased accordingly. 3) low thermal conductivity, about 1/3 of steel. Martensitic stainless steel: 410 and 416 can be heat strengthened, hardness 35 ~ 45HRC, good machining performance, Weihai stainless steel bolt, for general purpose corrosion resistant stainless steel screws. 416 higher sulfur content, is cutting stainless steel. 420, Linyi stainless steel bolt, sulfur content? R0.15%, to improve the mechanical properties, can be heat strengthened, Yantai stainless steel bolt, maximum hardness 53 ~ 58HRC, for applications requiring high strength stainless steel screws. Precipitation hardening stainless steel: 17-4PH, PH15-7Mo, they can get more than the usual 18-8 stainless steel higher strength, it has been used for high-strength, corrosion-resistant stainless steel screws. Stainless steel bolt, Jinan Road ground, Qingdao stainless steel anchor bolts provided by Jinan Daoqin Trading Company. Stainless steel bolt, Jinan Road ground, Qingdao, Jinan Road ground stainless steel bolt is Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel This page or image on to obtain the latest information, contact: Chuan-use.