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Patent No: IN457975 [India] Application No: IN201931034264
Title: HOT ROLLED AND DIRECT QUENCHED LOW ALLOY STEEL AND A PROCESS OF PRODUCING THE SAME
Issue Date: 10-10-2023 File Date: 26-08-2019
Inventor(s): A N Bhagat; Arunansu Haldar; Chiradeep Ghosh; Gaurav Bansal; Sandip Ghosh Chowdhury; V Rajinikanth; V C Srivastava
IPC Classification: C22C 38/44, C22C 38/04, C22C 38/46, C22C 38/54, C22C 38/00
Abstract:
Described herein is a process for producing low alloy steel comprising steps of: casting a steel alloy with composition (all in wt. %): 0.10 to 0.25 Carbon, 1.0 to 1.8 Manganese, 0.40 to 0.6 Silicon, 0.15 to 0.25 Chromium, 0.10 to 0.15 Molybdenum, 0.40 to 0.65 Nickel, 0.34 to 0.69 Carbon equivalent, 0 to 0.10 Vanadium, 0 to 0.08 Titanium, 0 to 0.01 Boron, and balance being Iron and residual impurities; homogenizing the steel alloy by austenitizing at 1150-1200°C for 2-4 hours; and hot rolling the steel alloy in the range of 68-75% followed by water quenching to room temperature. 
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Industrial Applications Alloys [Metallurgy] Making Processes [Metallurgy]