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Process Data set: Hot dip galvanized steel with Magnelis® coating (en) en

Tags Dieser Datensatz ist Bestandteil der ÖKOBAUDAT.
Key Data Set Information
Location RER
Reference year 2019
Name
Hot dip galvanized steel with Magnelis® coating
Use advice for data set Scope: The Life Cycle Assessment is based on data collected from the ArcelorMittal plants producing Magnelis® coated steel, representing 100% of the production in 2016. System boundary: Type of the EPD: cradle to gate - with Options. Module A1-A3, Module C3 and module D were considered. Modules A1-A3 of the structural steel production, include: The provision of resources, additives and energy Transport of resources and additives to the production site Production processes on site including energy, production of additives, disposal of production residues, and consideration of related emissions Recycling of production/manufacturing scrap. Steel scrap is assumed to reach the end-of-waste status once is shredded and sorted, thus becomes input to the product system in the inventory. Module C3 takes into account the sorting and shredding of after-use steel, as well as the non-recovered scrap due to sorting efficiency which is landfilled. A conservative value of 2% landfill is considered. Module D refers to the End-of-Life of the structural steel, including reuse and recycling. Data quality All relevant background datasets are taken from the GaBi software database /GaBi ts Software/. Regarding foreground data, this study is based on high quality of primary data, collected by ArcelorMittal. The GaBi-database contains consistent and documented datasets which can viewed in the online GaBi-documentation /GaBi ts Documentation/.
Technical purpose of product or process Magnelis® coated steel can be used in various industrial applications, such as: Construction: structural or non-structural profiles, roofing & cladding, decking, cable trays, expanded metal, gratings, composite flooring, concrete moulds Road and railway infrastructure: safety barriers, protection equipment, sound insulation wall panels, walls providing protection against hail Agriculture and farming: barns, greenhouse structures, agricultural equipment Solar energy generation: structures for photovoltaic plants Tubular applications: structural tubes for scaffolding, road signals, polesMagnelis® coated steel is delivered in wide coils, slit coils or sheets. It can be process by all conventional processing operations used for hot dip galvanised steel: bending, drawing, clinching, profiling, stamping, welding etc. The friction coefficient of Magnelis® coated steel is lower than the one of standard hot dip galvanised steel and is stable during cold forming operations.
Classification number 4.1.04
Classification
Class name : Hierarchy level
  • OEKOBAU.DAT: 4.1.04 Metals / Steel and iron / Steel sheets
  • IBUCategories: null / null / null
Copyright Yes
Owner of data set
Quantitative reference
Reference flow(s)
Material properties of the reference flow
    • gross density: 7828.0 kg/m^3
    • thickness: 1.0 mm
Time representativeness
Data set valid until 2024
Technological representativeness
Technology description including background system This Environmental Product Declaration refers to a double-sided hot dip galvanized coated steel, consisting of steel substrate with a specific metallic alloyed zinc coating, Magnelis®, applied by means of a continuous hot dip galvanising process. Magnelis® coated steel is a hot-dip galvanized carbon steel coated on both sides with a zinc-aluminiummagnesium alloy. This alloy, composed of 93.5% zinc, 3.5% aluminium and 3% magnesium, is applied by means of a continuous hot dip galvanising process. The substrates can be made of different steel grades with Magnelis® coating ranging from 90 to 430 g/m²and steel thicknesses ranging between 0.20 mm and 6.0 mm. The product is manufactured through the blast furnace-basic oxygen furnace (BF-BOF) route. Coke and iron ore (normally sinter produced from iron ore and limestone) are both fed into the blast furnace from the top; simultaneously, hot air and pulverised coal or natural gas (hydrogen is experimentally being used) are injected through pipes in the side of the lower part of the furnace called tuyeres. This results in a counter-cyclical process of descending iron ore met by rising reducing gases. Lime fluxes and other additives are also used in the blast furnace in varying quantities to control the level of impurities and the temperature. The blast furnace produces molten iron (“hot metal”) at temperatures up to 1400-1 500°C. The hot metal is then fed to the BOF, often in conjunction with some scrap, where oxygen is injected to lower the carbon content from approximately 4-5% to the required level of carbon for the steel grade produced. The produced liquid steel is then refined in a ladle furnace with addition of ferroalloys and metals to obtain the required steel characteristics. The steel is then casted at a continuous caster to obtain semi-finished products such as billets, blooms or slabs. The following operations are two rolling processes: the hot strip mill and the cold rolling mill. In the hot rolling mill the slab is reshaped above the recrystallization temperature. The qualities obtained in this process are e.g. strength and surface quality. During the rolling process the material passes through the furnace and the rolling line. In the furnace the metal is preheated by natural gas. There is no need for an additional warming, if the hot slabs are directly charged into the rolling mill. The forming is done in various rolling frames until the final shape is obtained. The steel scrap in this process are directly recycled. In the cold rolling mill the material is reshaped below the recrystallization temperature. Thereby a enhanced surface quality, an improved dimensional accuracy as well as a higher strength are achieved. The different process steps are: pickling, the rolling line and the heat treatment. The rolled coil can be then metallic coated with Zinc, aluminium and magnesium. Technical data: Due to its 3% magnesium content, Magnelis® coated steel offers self-healing on cut edges and corrosion resistance in chloride and ammonia atmospheres. This high corrosion resistance means that less metallic coating is required to insure an equivalent corrosion protection than with standard hot dip galvanized steels. The coating process can apply various thickness of the Zinc Aluminium Magnesium layer, up to 430 g/m² (total of both sides). Specific mechanical properties are defined for each steel grade used as substrate and measured according to /EN ISO 6892/. The corrosion resistance performance can be evaluated with different indoor & outdoor tests. One of the most common tests is the ‘Salt Spray Test’ defined according to /EN ISO 9227/. Declared unit: The declaration refers to the functional unit of 1 metric ton of double-sided Magnelis® coated steel as specified in Part B requirements on the EPD for Structural Steel /PCR Part B/. (1mm steel thickness with 120 g/m² Magnelis® coating)

Indicators of life cycle

IndicatorDirectionUnit Production
A1-A3
 Waste processing
C3
 Recycling Potential
D
Input
  • 1.12E+3
  • 11.2
  • 1.24E+3
Input
  • 0
  • 0
  • 0
Input
  • 1.12E+3
  • 11.2
  • 1.24E+3
Input
  • 2.34E+4
  • 34.3
  • -1.28E+4
Input
  • 0
  • 0
  • 0
Input
  • 2.34E+4
  • 34.3
  • -1.28E+4
Input
  • 83.2
  • 0
  • 897
Input
  • 0
  • 0
  • 0
Input
  • 0
  • 0
  • 0
Input
  • 5.61
  • 0.0153
  • 0.599
Output
  • 0.0000153
  • 2.18E-7
  • -0.00000897
Output
  • 11.8
  • 20.1
  • -27.2
Output
  • 0.166
  • 0.0047
  • 0.304
Output
  • 0
  • 0
  • 0
Output
  • 0
  • 9.8E+2
  • 0
Output
  • 0
  • 0
  • 0
Output
  • 0
  • 0
  • 0
Output
  • 0
  • 0
  • 0

IndicatorUnit Production
A1-A3
 Waste processing
C3
 Recycling Potential
D
  • 2.57E+3
  • 2
  • -1.71E+3
  • 5.14E-9
  • 6.89E-12
  • 3.36E-10
  • 0.74
  • 0.000475
  • -0.529
  • 4.53
  • 0.00678
  • -4.12
  • 0.469
  • 0.000799
  • -0.353
  • 0.0543
  • 9.53E-7
  • 0.000175
  • 2.3E+4
  • 22.5
  • -1.35E+4