Martensitic stainless steel for building structure fastener and manufacturing method thereof
A martensitic stainless steel and building structure technology, applied in the field of martensitic stainless steel, can solve the problems of poor cold forming performance, poor corrosion resistance, prone to galvanic corrosion, etc., achieve good hot working performance and cold working performance, and improve cold working Formability and corrosion resistance, effect of improving hot workability
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[0047] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0048] Table 1 is the composition of the steel of the embodiment of the present invention and the comparative example, table 2 is the process parameter of the embodiment of the present invention and the comparative example, and table 3 is the hot-rolled surface quality, mechanical properties and pitting potential of the embodiment of the present invention and the comparative example .
[0049] The martensitic stainless steel for building fasteners described in the embodiment of the present invention is smelted by electric furnace+AOD two-step method according to the composition in Table 1, and after being cast into a billet, it is then heated, hot rolled, annealed+pickling, and heat treated, wherein , the heating temperature is 1100-1200°C, the annealing temperature is 780-860°C, and the annealing holding time is 3-4 hours; the heat treatment process in...
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