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  • ArcelorMittal International

    Structural ShapesSales Program and Product Information

  • Table of Contents

    Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Production Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2ASTM Standard Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3HISTAR / ASTM A913 in the Codes . . . . . . . . . . . . . . . . . . . . . . 4Benefits of HISTAR / ASTM A913 Steel . . . . . . . . . . . . . . . . . . . 5Applications of HISTAR / ASTM A913 Steel . . . . . . . . . . . . . . . 7ASTM A913 Steel Frequently Asked Questions (FAQs) . . . . .10Section Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12A913 HISTAR References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

    ArcelorMittal International North America Headquarters1 South Dearborn Street, 13th FloorChicago, Ill . 60603T 312 899 3500F 312 899 3765

    ChicagoVincent MondelliDirectorT 312 899 3961vincent .mondelli@arcelormittal .comAnthony BryantSales ManagerT 312 899 3695anthony .bryant@arcelormittal .comRobert CarotiTechnical Sales EngineerT 312 899 3960robert .caroti@arcelormittal .comShelley Finnigan, S .E .Technical Sales EngineerT 312 899 3936shelley .finnigan@arcelormittal .com

    West Coast United States / CanadaEmiliano MoraSales ManagerT 778 355 8871M 604 838 0450F 778 355 8872emiliano .mora@arcelormittal .comCanada / BurlingtonAngelo CurcuruSales ManagerT 905 631 9500M 905 320 6649F 905 631 9505angelo .curcuru@arcelormittal .com

    Mexico / QueretaroPriv . de los Industriales No .110-A, Desp .802Col . Ind . Benito Juarez, 76100 Queretaro, Qro .Jose BustosSales ManagerT +52 442 218 2887M +52 442 322 6207F +52 442 218 1400jose .bustos@arcelormittal .com

  • 1 | Structural Shapes

    ArcelorMittal is the worlds leading steel and mining company and the largest importer of wide-flange beams in the United States a market which it has served for more than 80 years . Our total steel production

    of 97 .2-million tons in 2012, represents six percent of world steel output and ranks us first in the world for steel production . ArcelorMittal employs 245,000 individuals across 60 countries, including more than 36,000 in North America . As the leading global provider of structural steel shapes, ArcelorMittal produces steel that is used in buildings around the world, from tall towers to petrol refineries, from airports to railway stations and from shopping malls to residential

    houses . Our annual sales of structural shapes exceed five and a half million tons and make us the European leader in the production of structural and piling sections . Our mill in Differdange, Luxembourg rolled the first parallel wide flange shape in the world in 1902 and the first 40-inch deep beam in 1911 . In 1979, we introduced Tailor-Made beams (WTM), which were praised by both structural engineers and fabricators as a cost effective alternative to built-up sections and concrete . Today, ArcelorMittal offers the largest range of shapes in the world including W14 x 16 columns weighing up to 873 lbs/ft and several W44 x 16 sections .

    In 1990, ArcelorMittal introduced high-strength, low-alloy HISTAR steel to the world market . Initially available in only Grades 50 and 65, the range of HISTAR was expanded in 2011 to include Grade 70 . Conforming to ASTM A913 in the United States, HISTAR steel Grades 50 and 65 are approved by all major United States structural design and fabrication codes: AISC (ASD, LRFD and Seismic); IBC; AWS; and FEMA/SAC . The sections produced by ArcelorMittal using A913 steel have superior characteristics, including high yield strengths, excellent toughness and outstanding weldability . In addition, they are available without paying a price premium over our A992 or A572/50 steels . A913 steel is perfect for gravity columns, long span trusses, strong column / weak beam seismic designs and short or medium spans where deflection is not a concern . Later in this program, you will find an extensive list of prominent projects on which A913 steel has been specified .

    #1 Producer of Structural Shapes

    AOB in Esch-sur-Alzette, Luxembourg

    Popular sizes available in HISTAR A913 W14 x 90 132 W14 x 145 873 W36 x 150 387 W36 x 231 925 W40 x 167 392 W40 x 199 655 W44 x 230 335

  • 2 | Structural Shapes

    Production Process of ShapesISO 9001 Certified Quality

    As the worlds leading manufacturer of steel beams, ArcelorMittal offers engineers and fabricators innovative, competitive and sustainable solutions that are fully compatible with the use of other materials . Our electrical steelworks comply with the strictest environmental criteria, and our products meet all of the construction sectors technological requirements . ArcelorMittal structural shapes are produced in modern minimills using

    100 percent scrap as raw material . The below schematic diagram shows the production process, which consists of three main operations: melting, casting and rolling . To begin production, the scrap material is melted in highly efficient and environmentally friendly electric arc furnaces . The steel is then refined in a ladle furnace, and its temperature and chemistry is regulated before the casting process . In a continuous castor, the steel is solidified to a

    semi-finished product called a beam blank . After casting, the beam blanks are directly reheated to rolling temperature or stocked for later rolling . The rolling mills typically have one break-down stand and two or three universal rolling stands to shape the product to its final dimensions . Finally, the profiles are cooled, cut to length, inspected, marked and bundled before shipment to our customers .

  • 3 | Structural Shapes

    ASTM Standard Specifications

    A913/A913M - 111.1. This specification covers high-strength low-alloy structural steel shapes in Grades 50 [345], 65 [450] and 70 [485], produced by the quenching and self-tempering process (QST) . The shapes are intended for riveted, bolted or welded construction of bridges, buildings and other structures .

    HISTAR grades meet the specifications of ASTM A913

    A6/A6M 12S30.1 For shapes with a flange thickness equal to or greater than 1 inches that are specified in the purchase order to be tested in accordance with this supplementary requirement, Charpy V-notch impact tests shall be conducted in accordance with Specification A673/A673M, using specimens taken from the alternate core location . Unless otherwise specified in the purchase order, the minimum average absorbed energy for each test shall be 20 ft-lbf and the test temperature shall be 70F .

    Designers can also request the Charpy V-notch (CVN) results below, often referred to as Supplement 2

    6.2 Charpy V-notch tests shall be made in accordance with Specification A673/A673M, Frequency H:

    6.2.1 The test results of full-size specimens shall meet an average value of 40 ft-lbf at 70F .

    SUPPLEMENTARY REQUIREMENTSThe following special supplementary requirements should be considered for seismic applications.

    S75. Maximum Yield Point to Tensile Strength Ratio Grade 50 [345]: S75.1 The maximum yield point shall be 65 [450] ksi . S75.2 The maximum yield to tensile ratio shall be 0 .85 .These requirements help the designer control the formation of the plastic hinge during an earthquake using the strong column - weak beam concept.

    S77. Reduced Sulfur Grade 65 [450]: S77.1 The Grade 65 [450] shall be furnished with a

    maximum sulfur of 0 .010 percent . This may be desirable in material subjected to high through-thickness stresses .

    Alternate Core Location

    Standard Flange Location of CVN Specimens: 1/6 flange width, 1/4 flange thickness

    Alternate Core Location of CVN Specimens: 1/2 flange width, 1/4 flange thickness

    Table 1 Chemical RequirementsElement Maximum content in %

    Grade 50 Grade 65 Grade 70

    Carbon 0 .12 0 .16 0 .16Manganese 1 .60 1 .60 1 .60Phosphorus 0 .040 0 .030 0 .040Sulfur 0 .030 0 .030 0 .030Silicon 0 .40 0 .40 0 .40Copper 0 .45 0 .35 0 .45Nickel 0 .25 0 .25 0 .25Chromium 0 .25 0 .25 0 .25Molybdenum 0 .07 0 .07 0 .07Columbium 0 .05 0 .05 0 .05Vanadium 0 .06 0 .08 0 .09

    Table 2 Tensile RequirementsGrade Yield Point,

    min.Tensile

    Strength, min.Elongation, min.

    (ksi) (ksi) 8-inch, % 2-inch, %

    50 50 65 18 2165 65 80 15 1770 70 90 14 16

  • 4 | Structural Shapes

    HISTAR / ASTM A913 in the Codes

    AISC 360-10 Specification for Structural Steel BuildingsASTM A913 has been an approved specification with AISC since the publication of LRFD Specification for Structural Steel Buildings in 1999 . The approval came in a letter ballot of the Specifications Committee in July 1995 and was confirmed at its meeting in November 1995 . ASTM A913 (including all grades) is still included as an approved specification under A3 .1a of the Specification for Structural Steel Buildings dated June 22, 2010 . This includes both ASD and LRFD design methods .

    AISC 341-10 Seismic Provisions for Structural Steel BuildingsSection A3 .1, the Seismic Provisions for Structural Steel Buildings allows ASTM A913 Grades 50 and 65 for use in seismic force resisting systems and states that the specified minimum yield stress of structural steel shall not exceed 65 ksi (450 MPa) for columns in systems defined in Sections E3, E4, G3, H1, H2 and H3, and for columns in all systems in Chapter F . ASTM A913 Grade 70 can be used at the engi

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