MUMBAI, India, Nov. 14 -- Intellectual Property India has published a patent application (202517094957 A) filed by Nippon Steel Corporation, Tokyo, on Oct. 3, for 'two-phase stainless steel material and two-phase stainless steel welded joint.'
Inventor(s) include Osuki, Takahiro; Yamada, Kenta; Izawa, Takahiro; and Aota, Shohgo.
The application for the patent was published on Nov. 14, under issue no. 46/2025.
According to the abstract released by the Intellectual Property India: "Provided is a two-phase stainless steel material in which the strength of a weld metal produced by non-filler welding using a shielding gas that does not contain nitrogen is comparable to or greater than that of a base material portion. A two-phase stainless steel material according to the present disclosure contains, in mass%, 0.001-0.030% of C, 1.00% or less of Si, 0.05-5.00% of Mn, 0.035% or less of P, 0.0008% or less of S, 21.00-28.00% of Cr, 4.00-9.50% of Ni, 0.80-5.50% of Mo, 0.01-3.50% of Cu, 0.001-0.050% of Al, 0.400% or less of N, 0.0001-0.0050% of B, 0.0050% or less of Mg, 0.0005-0.0100% of Ca, 0.002-0.100% of Ti, and 0.05-2.00% of Co, and satisfies formula (1) and formula (2). (1): Ca/S=2.00 (2): (1000 Ti+2 N) Co0.2 (0.5 Ca/S)1.6=50.00."
The patent application was internationally filed on Mar. 08, 2024, under International application No.PCT/JP2024/009163.
Disclaimer: Curated by HT Syndication.
