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❀About Jinsong Stainless Steel SUS630/ X5CrNiCuNb17-4

☞SUS630 stainless steel is under the type of Martensitic precipitation-hardening stainless steel. The stainless steel's intensity can be adjusted by changing heat treatment and it has better corrosion resistance than Cr13, 95Cr18 and 14Cr17Ni2 steel and better corrosion fatigue resistance and water erosion resistance than Cr13 steel; the welding processing of SUS630 or X5CrNiCuNb17-4 is very convenient and it is easily processed and manufactured, but it is hard to have deep cold forming.

☞Martensitic precipitation hardening stainless steels have a predominantly austenitic structure at annealing temperatures of around 1040 to 1065°C. They can change from austenite to martensitic stainless steel after being cooled to room temperature.

SUS630 steel bears the properties of good corrosion resistance and oxidation resistance and machinability, which is similar to stainless steel series 304 in annealed condition. It should be taken into consideration that the cold working of stainless steel SUS630 or X5CrNiCuNb17-4 is only under the fully annealed condition.

☞This kind of Martensitic precipitation-hardening stainless steel is mainly used in making high-intensity parts requiring not only rust resistance but also weak acid, alkali and salt resistance, such as last-stage moving blade of steam turbine, structural parts working in corrosive environment below 300℃, etc.

❀About Jinsong Stainless Steel

Zhenjiang Jinsong Stainless Steel Production Co., Ltd. is a large modern enterprise which is professionally engaged in researching and producing of stainless steel and high-grade alloy material. The company owns the AOD refining furnace which has an annual output of 300,000 tons and the vacuum smelting furnace.