IN2014MU00318AIN318MU2014AIN2014MU00318AIN 2014MU00318 AIN2014MU00318 AIN 2014MU00318AIN 318MU2014 AIN318MU2014 AIN 318MU2014AIN 2014MU00318 AIN2014MU00318 AIN 2014MU00318A
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IN
India
Prior art keywords
application
ppm
production
low carbon
hot rolled
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Application number
Inventor
Binod Kumar Singh
Pradip Kumar Patra
Arun Kumar A PANDEY
Mrigandra Singhai
Srimanta Sam
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Jsw Steel Ltd
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Priority to IN318MU2014priorityCriticalpatent/IN2014MU00318A/en
Publication of IN2014MU00318ApublicationCriticalpatent/IN2014MU00318A/en
ABSTRACT TITLE: LOW CARBON COIL BREAK FREE HOT ROLLED STEEL SHEETS AND A PROCEES FOR ITS PRODUCTION. The present invention relates to providing low carbon coil break free hot rolled (HR) steel sheet in the thickness range of 1.5-8.0 mm with minimum yield point phenomenon and a process for its production through thin slab caster route followed by controlled hot rolling, having composition comprising C: 0.04-0.08wt%; Mn: up to 0.4wt%; Si: up to 0.03 wt%;Al < 0.05wt%;Nb: 0.002-0.01wt%;N: < 120 ppm; Ca: 0-50 ppm; and balance is iron with S & P in amounts of allowable impurities alongwith selective alloying element Nb: 0.002-0.01wt% for fixing free N and C. Typical applications of the invented steel grade include direct sheet application in automotive and other general engineering application including machinery, white good application, BIW application etc.
High-strength cold-rolled steel sheet and hot-dipped galvanized steel sheet with low deviation of material properties and excellent formability, and method for manufacturing same
Method for producing a cold-rolled flat steel product for deep-drawing and ironing applications, flat steel product and use of such a flat steel product