Martensitic stainless steel also includes 1Cr17Ni2 containing 2% nickel. Because 2% addition of nickel, the steel matrix of transition from a single phase of ferrite phase to two-phase structure quenching into martensite. 650 ° C tempering is tempered sorbite and was zonal distribution of ferrite. Thus its performance can be enhanced by heat treatment. So it has both Cr17 stainless steel corrosion resistance, but also the strength of Cr13 stainless steel, it is widely used in chemical machinery, shipbuilding and aviation industries. Type semi-austenitic precipitation hardening stainless steel precipitation hardening stainless steel. Its representative steel have 0Cr17Ni7Al (equivalent to 17-7PH) and 0Cr15Ni7Mo2Al (equivalent PH15-7Mo). Such steel is a solid solution supplier Hard 304 stainless steel, the microstructure is substantially austenite, still contains about 5% to 20% ferrite. Because austenite plastic, easy to cold forming and welding, to be 304 stainless steel mirror forming process, subject to special treatment in the middle, so that low-carbon austenite into martensite and precipitation hardening by aging reach higher strength. Martensitic precipitation hardening stainless steel. Its representative steel have 0Cr17Ni4Cu4Nb (equivalent to 17-4PH). Such steel supplier to martensite state, its chemical composition to ensure that the solution treatment after 304 stainless steel material, at room temperature to a low-carbon martensite. It uses martensitic and precipitation hardening intersect combine to increase the strength and hardness of steel, 304 stainless steel, compared with the semi-austenitic precipitation hardening stainless steel, heat treatment process is simple, by changing the aging temperature can be adjusted over a wide range mechanical properties. Its superior corrosion resistance than conventional martensitic stainless steel. 304 stainless steel strip, 0.5mm (certified), Zhuhai, Dongguan City, 304 stainless steel with a total fat by Metal Materials Co., Ltd. offers. City issued a total of Metal Materials Co., Ltd. (www.dggongfa.com) (www.dggongfa.com) is Dongguan, stainless steel and products of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. In total hair metal leadership with the staff warmly welcome all inquiries negotiations to create a total of hair metal a better future. You can also access (www.dggongfa.com/supply_details_45765835.html), for more information about the company.