Process information
| Key Data Set Information | |
| Location | IN |
| Reference year | 2016 |
| Name |
|
| Use advice for data set | Scope: This declaration and its LCA are relevant for hot rolled steel strip product manufactured by JSW Steel Limited, Vijayanagar Works, Bellary – 583275, India. System boundary: Type of the EPD: cradle-to-gate (modules A1-A3), module C3 and module D. The “Product stage” (modules A1-A3) accounts for: production and processing of raw materials and the processing of secondary material input; transport of these inputs to the manufacturing site; and manufacture of hot rolled strip, product, onsite power generation, and waste processing/treatment. The End of Life stage (module C3) accounts for: Waste Processing Landfilling For module D, it is assumed that 85% of the hot rolled steel strip used in the structure is recovered for recycling, while the remainder is landfilled (/worldsteel/) as an inert matter. Transport impacts have been included for all mass inputs and outputs across the modules considered in this study. This has been based on information supplied by JSW Steel Limited. |
| Technical purpose of product or process | Hot rolled steel strip product is used in load-bearing applications within buildings. The application of various products types of HRC is as follows: Structural Steel - Structural steels are intended for welded, bolted or riveted structures Drawing and Forming Steel - Hot-rolled steel for cold forming is used for bending and deep drawing and is suitable for welding High Strength Low Alloy Steel - High-strength steel with enhanced properties for forming and welding with combine high strength with good formability. Hot-rolled DP600 is advanced high-strength steel for the automotive industry. Medium Carbon Steel - Hot-rolled medium- carbon steel, supplied in the ‘as rolled’ condition, often heat treated to give the final mechanical properties required for the intended application. Re Rolling Steel - Hot-rolled steel, supplied in the ‘as rolled’ condition is feed stock for cold-rolled, galvanised and packaging steels. Weather Resistance Steel - Also referred to as Atmospheric Corrosion Resistant Steel, this product is seen as an inexpensive and highly effective material to be used in structural applications which are exposed to the atmospheric elements. |
| Classification |
Class name
:
Hierarchy level
|
| General comment on data set | Hot Rolled Steel Strip is a Steel Sheet product with a maximum thickness of 25.4 mm. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Time representativeness | |
| Data set valid until | 2021 |
| Technological representativeness | |
| Technology description including background system | In the integrated steel production route, iron ore lumps (a typical mix is based on ferro-oxides Fe2O3) and other additives are mixed and sintered for being fed into the blast furnace together with coking coke, which is used as the reducing agent, limestone and steel scrap. (For COREX the reducing agent is non-coking coal). Also pellets and / or lump may be used. The pig iron produced in the blast furnace & COREX is transferred into the basic oxygen furnace. In this vessel, the iron is converted into steel by lowering the carbon content of the iron by blowing oxygen into the melt (exothermic reaction). For temperature control, scrap (up to 10%) is added to the melt. Refining (lowering of sulphur, phosphorous and other tramp elements) and alloying with micro-alloying elements is applied according to steel grade to give the requested characteristics for the steel. Depending on the special requirement for internal soundness, few steel products are processed through the RH (Ruhrstahl-Heraeus) Degassing unit. At the end of the steelmaking process, the liquid steel is transformed into a semi-finished product in a continuously casted steel slab. The semi-finished slab is then rolled and Hot Rolled Steel Strip as a finished product is produced. Quality control: /ISO 9001/ Monitoring according to the product standards. Technical data: Types of steel: Hot rolled products (as specified in /EN 10025-1:2005/). Declared unit: The declared unit is 1 tonne of hot rolled steel strip having the technical characteristics declared in 2.3. This is calculated based on the yearly data of hot rolled steel strip products produced at the manufacturing site during the assessed period. |
| Flow diagram(s) or picture(s) | |
Modelling and validation
Administrative information
Environmental indicators