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Structural Steel, Cartersville Steel Mill Environmental Product Declaration Structural Steel, Cartersville Steel Mill Gerdau Gerdau Long Steel North America 4221 West Boy Scout Blvd Tampa, Florida 33607 www.Gerdau.com/northamerica Declaration Owner: Luis Nieves Director, Environmental Affairs 813-503-1619 | [email protected] Facility: Gerdau Cartersville Steel Mill 384 Old Grassdale Rd. NE Cartersville, GA 30121 This EPD has been prepared using data from 228 fabrication shops located throughout the US. For simplicity, the addresses have not been included here. Declared Unit The declared unit is one metric ton of fabricated Structural steel produced in a Gerdau facility, as used to provide structural support to buildings, foundations and other structures. Results are reported using SI units. Environmental Product Declaration Structural Steel . Cartersville Steel Mill Program Operator: SCS Global Services 2000 Powell Street, Ste. 600, Emeryville, CA 94608 +1.510.452.8000 | www.SCSglobalServices.com EPD Number and Period of Validity SCS-EPD-04279 Approved: December 15, 2016 - Valid until: December 14, 2021 Product Category Rule North American Product Category Rule for Designated Steel Construction Products, v1.0 Thomas P. Gloria, Ph.D., Industrial Ecology Consultants PCR review, was conducted by [email protected] Approved Date: December 15, 2016 - End Date: December 14, 2021 Independent verification of the declaration and data, according internal external to ISO 14025:2006 and ISO 21930:2007. a Third party verifier Jeremie Hakian, SCS Global Services Environmental Product Declaration Structural Steel . Cartersville Steel Mill About Gerdau Gerdau is a leading producer of long steel in the Americas and one of the largest suppliers of special steel in the world. It is the largest recycler in Latin America and one of the largest recyclers in North America, transforming millions of tons of scrap into steel each year and reinforcing its commitment to sustainable development in the regions where it operates. Gerdau’s North American business division focus on long steel and special steel products including beams and piling, merchant bar quality, rebar, special bar quality and wire rod products. The company serves the construction, automotive, agricultural, service center and energy markets through its vertically integrated network of steel mills, recycling and downstream processing facilities. PRODUCT Gerdau is a global leader in the production of hot-rolled structural products. Gerdau Structural steel is manufactured from recycled steel – both pre-consumer and post-consumer scrap, demonstrating the company’s commitment to environmentally-responsible steel production. From commercial buildings in Montreal to hospitals in Texas, and from the Panama Canal to the bays of Alaska, Gerdau beams and piling products have proven the company’s commitment to consistently high production standards. Gerdau produces four distinct beam shapes in North America, providing a range of geometries to suit applications from construction to manufacturing. Gerdau also produces three primary categories of piling, typically used in deep foundation and geo-technical construction projects, such as foundations, marine, environmental and transportation. The Cartersville Steel Mill in Georgia produces Wide Flange Beams and Standard I-Beams. This Environmental Product Declaration is for 1 metric ton of fabricated Structural steel produced by Gerdau in the Cartersville Steel Mill. Structural steel is manufactured from steel scrap, melted in an Electric Arc Furnace (EAF) followed by hot rolling, and by transport to external fabrication shops and fabrication. VERIFIED BY VERIFIED BY © 2016 SCSglobalServices.com SCS Global Services SCS Global Services Environmental Product Declaration Structural Steel . Cartersville Steel Mill PRODUCT SCOPE This EPD is for Structural steel that is obtained from steel scrap that does not contain virgin material. Scrap metal, together with alloying additions, are melted in an Electric Arc Furnace (EAF) to obtain liquid steel and casted into steel billets. The billets are sent to the rolling mill where they are rolled and shaped to the required dimensions for the finished steel products. The Structural steel is then fabricated in external fabrication shops. This EPD includes Structural steel produced in the Gerdau mill located in Cartersville, GA. The process flow diagram for this EPD is shown below: 1. RECYCLE Scrap metal is sourced from within 500 miles 2. MELT AND MOLD of mill and cut for melting Melt with three carbon electrodes at 3,000 degrees F Alloys added to the molten steel in a ladle that is lifted to the top of a caster Cooled by spraying water until solid throughout Steel flows into a reservoir then into the molds Load in furnace Rollstands reduce billets, increase 4. ROLL length and shape the steel Billets reheated and sent through roll stands 5. COOL 3. REHEAT Hot steel cools on cooling bed The finished products are steel billets 6. LONG STEEL PRODUCT Steel is straightened, cut, tested, bundled for delivery and shipped to customers Environmental Product Declaration Structural Steel . Cartersville Steel Mill According to the applicable PCR, the declared unit of this study is one metric ton of fabricated Structural steel produced in a Gerdau facility up to the gate. In this EPD, the gate is an external fabrication shop. More information on the declared unit is shown in Table 1 and specifications for the products are shown in Table 2. Table 1. Declared unit for fabricated Structural steel and the approximate density. Parameter Value, SI Units Value, US Customary Units Declared Unit 1 metric ton 1 short ton Density 7,850 kg/m3 490 lb/ft3 Table 2. Technical Information for fabricated Structural steel. Parameters Structural Steel Units Specific gravity 7.85 N/A Boiling point 3,000 °C Melting point 1,540 °C This study is a cradle-to-gate study, which addresses the environmental aspects and potential environmental impacts from raw material acquisition to the point at which the product leaves the gate of the fabrication shop. MATERIAL CONTENT The approximate material content of Structural steel will vary slightly from batch to batch. In general, the steel will contain < 97% recycled iron, < 2% Manganese, <1.5% Copper, <0.9% Carbon, and a total of 1.5% or less of Nickel, Silicon, Sulfur, Tin, Phosphorus, and Vanadium. Steel products used inside the building envelope (e.g., used in load-bearing applications present inside wall structures) do not include materials or substances which have any potential route of exposure to humans or flora/fauna in the environment. VERIFIED BY VERIFIED BY © 2016 SCSglobalServices.com SCS Global Services SCS Global Services Environmental Product Declaration Structural Steel . Cartersville Steel Mill PRODUCT LIFE CYCLE FLOW DIAGRAM The diagram below is a representation of the most significant contributions to the production of Structural steel.This includes resource extraction, steelmaking, transport to fabrication shops, and product fabrication. The cradle-to-gate (A1- A3) system boundaries are shown in the diagram. Waste flows are treated within the module they occur via system expansion. Ra aerials Procion ranspor o Ra aerials anacrin o Srcral Seel ranspor o CoProcs ase isposal Recclin o CoProcs ase SYSTEM BOUDARY . UFABRICATED STRUCTURA STEE ranspor o abricaion Shop abricaion o Srcral Seel SYSTEM BOUDARY . FABRICATED STRUCTURA STEE se ainenance isposal Reccle Rese n o ie anaeen Recovere aerials Environmental Product Declaration Structural Steel . Cartersville Steel Mill LIFE CYCLE ASSESSMENT STAGES AND REPORTED INFORMATION In accordance with the PCR, the life cycle stages included in this EPD are as shown below (× = included, MND = module not declared): Benefits & loads Construction beyond Product Use End-of-life Process the system boundary A1 A2 A3 A4 A5 B1 B1 B3 B4 B5 B6 B7 C1 C2 C3 C4 D Use Repair Disposal Transport Transport Maintenance Replacement Refurbishment Manufacturing Waste processing Operational water use Operational energy use Construction – installation Deconstruction demolition Transport to manufacturer Raw material extraction and processing Reuse, recovery and/or recycling potential × × × MND MND MND MND MND MND MND MND MND MND MND MND MND MND × = included, MND = module not declared The following life cycle stages are included in the EPD: §§Raw materials: The primary raw material used for the manufacture of Structural steel is steel scrap, together with various alloys. The raw materials are included in the A1 product stage. §§Transport: Inbound transportation includes transportation of all materials from suppliers to the Gerdau facility, and is included in A1 product stage. The outbound transportation includes the transportation of the unfabricated Structural steel to the external fabrication shops, and is included in the A2 product stage. VERIFIED BY VERIFIED BY © 2016 SCSglobalServices.com SCS Global Services SCS Global Services Environmental Product Declaration Structural Steel . Cartersville Steel Mill §§Manufacturing of Structural Steel: Scrap metal and alloys are mixed in a vessel in the Melt Shop and an electric arc furnace heats up the raw materials by use of electrodes, causing them to melt. Successively the molten steel is cast into billets, which will be reheated in a reheat furnace. From there, billets enter the Rolling Mill where they are rolled into Structural steel. The manufacturing of Structural steel is included in the A1 product stage. §§Waste disposal: The Structural steel
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