444 (18-2) stainless steel 444 (18-2) Properties and Applications: SUS444 (00Cr18Mo2) is an ultra-low carbon and nitrogen containing 18% chromium and 2% molybdenum, high corrosion resistance of ferritic stainless steel. The steel commonly used niobium or titanium stabilized, intergranular corrosion after welding can be avoided. The steel is particularly suitable for a variety of water treatment devices. 444 (18-2) chemical composition ②: Carbon C: ≤0.025 Mn Mn: ≤1.00 Si Si: ≤1.00 chromium Cr: 17.5 ~ 19.5 Ni-Ni: ≤1.00 phosphorus P: ≤0.04 sulfur S: ≤0.03 Mo Mo: 1.75 ~ 2.5 N N: ≤0.035 (Ti + Nb) Ti + Nb: ≥0.2 + 4 (% C +% N) Note: ① Bank of XM grades are listed in the table alloy ASTM grades. Type in parentheses is Obsolete AISI grades; ② single value, unless otherwise stated are the highest value; ③ highest value 1.00%; ④ nominal composition; the composition range is not available; ⑤ highest value 0.50% ; ⑥ maximum value of 0.75%; ⑦ maximum value of 0.80%. The yield strength of 444 is equivalent to 1.5 times the carbon steel, fiberglass six times, for seismic resistance, snow, wind pressure resistance, impact resistance and other properties have outstanding fine. Ferritic stainless steel SUS444 high thermal conductivity, about chromium-nickel austenitic stainless steel 130% to 150%, very suitable for the use of heat exchange. Thermal expansion coefficient, the squad's only Olympic-chromium-nickel stainless steel of 60% to 70%, very suitable heat up, shrink, there is the use of thermal cycling conditions. The steel ductility, toughness, adapted to stretch, roll forming and stamping manufacturing. In particular, is the most excellent corrosion-resistant applications in high corrosion resistance in chloride media than ordinary ferritic stainless steel and Olympic's body, generally do not produce chloride stress corrosion cracking. After the addition of Ti, Mo, etc. yuan to improve the performance of pitting and crevice corrosion resistance hole. This method can be welded ordinary stainless steel welding. The steel is particularly suitable for food processing equipment, heat exchangers, water heater tank, water storage tank, solar collector panels are high-alloy steels 444 ferritic stainless steel, compared with the commonly used steel SUS430:.. 1 high chromium content about 1.0%, and added molybdenum alloying elements (Mo), so that the steel has good resistance to pitting, crevice corrosion, stress corrosion cracking, corrosion resistance in some areas it is even better than SUS304 and SUS316.2. Add titanium (Ti), niobium (Nb), zirconium (Zr) and other stabilizing elements, so that the steel has good inter-crystalline corrosion resistance and high temperature oxidation resistance. Chuan sharp metal: Guangdong Dongguan Changan Shenzhen, Huizhou, Heyuan stainless excellence Chuan sharp metal: Taiyuan Huangyan Wuhu Hangzhou Lishui stainless excellence Chuan sharp metal: Dezhou, Dongying, Jinan, Laiwu Liaocheng stainless excellence Chuan sharp metal: Hanzhong, Shaanxi Xi'an Yingkou Shenyang Yangzhou stainless steel excellence Chuan sharp metal: Hebi Luoyang Xinxiang Xinyang Yancheng Laiwu steel excellence Chuan sharp metal: Chuzhou, Anhui Wuhu Huzhou, Ningbo, Weihai stainless excellence Chuan sharp metal: Ganzhou 饶宜春 Wenzhou Changzhou stainless excellence Chuan sharp metal on Nanchang: Changzhou, Jiangsu Huaian, Nanjing, Nantong Excellent quality stainless steel sunshine sharp metal Chuan: Suzhou, Taicang, Changshu, Wujiang River in Luoyang Yantai excellence sharp stainless steel metal: Jiangyin Yixing, Wuxi, Xuzhou, Yancheng Jiaxing excellence Chuan sharp stainless steel metal: Jiang Yin Wujiang, Wuxi, Hangzhou, Huzhou Suqian stainless excellence Chuan sharp metal: Jinhua, Yiwu Zibo Nanchang, Qingdao, Dongying stainless excellence Chuan sharp metal: Yuyao Yixing, Shanghai, Xi'an, Taizhou Chuan sharp metal stainless excellence: Yuyao, Shaoxing, Taizhou Huangyan Changshu Lishui River excellence sharp stainless steel metal: Hefei, Nanjing, Xiamen, Wenzhou Yueqing Ryan excellence Chuan sharp stainless steel metal: Shandong Dongying, Binzhou, Dezhou, Jinan Jining stainless excellence Chuan sharp metal: Weihai, Yantai, Zibo, Weifang, Qingdao Jiaxing excellent quality stainless steel sharp metal Chuan: Rudong, Rugao, Tongzhou Suzhou, Kunshan, Changshu stainless excellence Chuan sharp metal: Jing Jiang Taixing Wuxi, Xuzhou, Jiangyin Yixing sharp stainless excellence River Metal: Yizheng Gaoyou jiangdu Danyang, Zhenjiang Jurong River excellence sharp stainless steel metal: Jiangyan rooftop Wenling Yong Kang, Dongying, Yantai stainless excellence ------------------------ ------