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Jamshedpur, India

For the annual chess tournament, see Tata Steel Chess TournamentTata Steel Limited ) is an Indian multinational steel-making company headquartered in Mumbai, Maharashtra, India, and a subsidiary of the Tata Group. It was the 11th largest steel producing company in the world in 2013, with an annual crude steel capacity of 25.3 million tonnes, and the second largest private-sector steel company in India with an annual capacity of 9.7 million tonnes after SAILTata Steel has manufacturing operations in 26 countries, including Australia, China, India, the Netherlands, Singapore, Thailand and the United Kingdom, and employs around 80,500 people. Its largest plant is located in Jamshedpur, Jharkhand. In 2007 Tata Steel acquired the UK-based steel maker Corus which was the largest international acquisition by an Indian company till that date. It was ranked 486th in the 2014 Fortune Global 500 ranking of the world's biggest corporations. It was the seventh most valuable Indian brand of 2013 as per Brand Finance.On 16 February 2012 Tata Steel completed 100 years of steel making in India. Wikipedia.


Patent
Tata Steel | Date: 2013-07-03

A method for providing a coated strip, which includes the steps of providing a metal or metal alloy strip, applying one or more coating layers on the metal or metal alloy strip and irradiating one or more of the applied coating layers with electromagnetic radiation, wherein one or more of the applied coating layers includes dielectric particles capable of absorbing microwave radiation and wherein microwave radiation is used to selectively heat one or more of the coating layers containing the dielectric particles to dry and/or cure and/or sinter the coating layer.


This relates to a coated substrate for packaging applications including a recrystallisation annealed single reduced steel substrate or a double reduced steel substrate subjected to recrystallisation annealing between the first and second cold rolling treatment, wherein one or both sides of the substrate is coated with an iron-tin alloy layer which contains at least 80 weight percent (wt. %) of FeSn (50 at. % iron and 50 at. % tin) and wherein the iron-tin alloy layer or layers are provided with a chromium metal-chromium oxide coating layer produced by a trivalent chromium electroplating process, and wherein the thickness of the chromium metal-chromium oxide coating layer corresponds to at least 20 mg Cr/m


Patent
Tata Steel | Date: 2013-04-05

A dual phase or complex phase steel strip showing no tigerstripes. The steel strip having an ultimate tensile strength Rm classifying for 1000 MPa steel category, includes (in mass percent) C 0.09-0.19%; Mn 1.9-2.6%; Si at most 0.1%; Cr 0.4-0.8%; Mo at most 0.3%; Ni at most 0.4%; Al 0.02-1.3%; and optionally one or more of the following elements: Nb at most 0.08%; P equal to or more than 0.0005%; N equal to or less than 0.015%; Ti equal to or less than 0.1%; V equal to or less than 0.1%; B equal to or less than 0.01%; wherein the sum of Cr, Mo and Ni is at least 0.5%; the balance being Fe and inevitable impurities.


Steel strip provided with a hot dip galvanized zinc alloy coating layer, in which the coating of the steel strip is carried out in a bath of molten zinc alloy, the zinc alloy in the coating of: 0.3-2.3 weight % magnesium; 0.6-2.3 weight % aluminium; optional <0.2 weight % of one or more additional elements; unavoidable impurities; the remainder being zinc in which the zinc alloy coating layer has a thickness of 3-12 m.


Patent
Tata Steel | Date: 2014-10-28

A high strength hot dip galvanized steel strip including, in mass percent, of the following elements: 0.10-0.18% C, 1.90-2.50% Mn, 0.30-0.50% Si, 0.50-0.70% Al, 0.10-0.50% Cr, 0.001-0.10% P, 0.01-0.05% Nb, max 0.004% Ca, max 0.05% S, max 0.007% N, and optionally at least one of the following elements: 0.005-0.50% Ti, 0.005-0.50% V, 0.005-0.50% Mo, 0.005-0.50% Ni, 0.005-0.50% Cu, max 0.005% B, the balance Fe and inevitable impurities, wherein 0.80%2.10%. This steel offers improved formability at a high strength, has a good weldability and surface quality together with a good produce-ability and coat-ability.

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