A6M.pdf | Structural Steel | Heat Treating

Please download to get full document.

View again

of 59
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Information Report



Views: 11 | Pages: 59

Extension: PDF | Download: 0

Related documents
Designation: A 6/A 6M – 99 Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling1 This standard is issued under the fixed designation A 6/A 6M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the ye
  Designation: A 6/A 6M – 99 Standard Specification for General Requirements for Rolled Structural Steel Bars,Plates, Shapes, and Sheet Piling 1 This standard is issued under the fixed designation A 6/A 6M; the number immediately following the designation indicates the year of srcinal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon ( e ) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope 1.1 This specification 2 covers a group of common require-ments that, unless otherwise specified in the material specifi-cation, apply to rolled steel plates, shapes, sheet piling, andbars under each of the following specifications issued byASTM: ASTMDesignation 3 Title of SpecificationA 36/A 36M Carbon Structural SteelA 131/A 131M Structural Steel for ShipsA 242/A 242M High-Strength Low-Alloy Structural SteelA 283/A 283M Low and Intermediate Tensile Strength Carbon Steel PlatesA 328/A 328M Steel Sheet PilingA 514/A 514M High-Yield Strength, Quenched and Tempered Alloy SteelPlate Suitable for WeldingA 529/A 529M High-Strength Carbon-Manganese Steel of Structural Qual-ityA 572/A 572M High-Strength Low-Alloy Columbium-Vanadium SteelA 573/A 573M Structural Carbon Steel Plates of Improved ToughnessA 588/A 588M High-Strength Low-Alloy Structural Steel with 50 ksi (345MPa) Minimum Yield Point to 4 in. [100 mm] ThickA 633/A 633M Normalized High-Strength Low-Alloy Structural Steel PlatesA 656/A 656M Hot-Rolled Structural Steel, High-Strength Low-Alloy Platewith Improved FormabilityA 678/A 678M Quenched-and-Tempered Carbon and High-Strength Low-Alloy Structural Steel PlatesA 690/A 690M High-Strength Low-Alloy Steel H-Piles and Sheet Piling forUse in Marine EnvironmentsA 709/A 709M Carbon and High-Strength Low-Alloy Structural SteelShapes, Plates, and Bars and Quenched-and-TemperedAlloy Structural Steel Plates for BridgesA 710/A 710M Age-Hardening Low-Carbon Nickel-Copper-Chromium-Mo-lybdenum-Columbium Alloy Structural Steel PlatesA 769/A 769M Carbon and High-Strength Electric Resistance Welded SteelStructural ShapesA 786/A 786M Rolled Steel Floor PlatesA 808/A 808M High-Strength Low-Alloy Carbon, Manganese, Columbium,Vanadium Steel of Structural Quality with Improved NotchToughnessA 827/A 827M Plates, Carbon Steel, for Forging and Similar ApplicationsA 829/A 829M Plates, Alloy Steel, Structural QualityA 830/A 830M Plates, Carbon Steel, Structural Quality, Furnished toChemical Composition RequirementsA 852/A 852M Quenched and Tempered Low-Alloy Structural Steel Platewith 70 ksi [485 Mpa] Minimum Yield Strength to 4 in.[100 mm] ThickA 857/A 857M Steel Sheet Piling, Cold Formed, Light GageA 871/A 871M High-Strength Low Alloy Structural Steel Plate with Atmo-spheric Corrosion ResistanceA 913/A 913M Specification for High-Strength Low-Alloy Steel Shapes ofStructural Quality, Produced by Quenching and Self-Tempering Process (QST)A 945/A 945M Specification for High-Strength Low-Alloy Structural SteelPlate with Low Carbon and Restricted Sulfur for ImprovedWeldability, Formability, and ToughnessA 992/A 992M Specification for Steel for Structural Shapes for Use inBuilding Framing 1.2 AnnexA1 lists permissible variations in dimensions andmass (Note 1) in SI units. The values listed are not exactconversions of the values in Tables 1-31 but are, instead,rounded or rationalized values. Conformance to Annex A1 ismandatory when the “M” specification designation is used. N OTE  1—The term “weight” is used when inch-pound units are thestandard; however, under SI, the preferred term is “mass.” 1.3 Annex A2 lists the dimensions of some shape profiles.1.4 Appendix X1 provides information on coiled product asa source of structural plates, shapes, sheet piling, and bars.1.5 Appendix X2 provides information on the variability of tensile properties in plates and structural shapes.1.6 Appendix X3 provides information on weldability.1.7 Appendix X4 provides information on cold bending of plates, including suggested minimum inside radii for coldbearing.1.8 This specification also covers a group of supplementaryrequirements that are applicable to several of the abovespecifications as indicated therein. Such requirements areprovided for use where additional testing or additional restric-tions are required by the purchaser, and apply only whenspecified individually in the purchase order.1.9 In case of any conflict in requirements, the requirementsof the individual material specification shall prevail over thoseof this general specification.1.10 Additional requirements that are specified in the pur-chase order and accepted by the supplier are permitted,provided that such requirements do not negate any of the 1 This specification is under the jurisdiction of ASTM Committee A-1 on Steel,Stainless Steel, and Related Alloys and is the direct responsibility of SubcommitteeA01.02 on Structural Steel for Bridges, Buildings, Rolling Stock, and Ships.Current edition approved March 10, 1999. Published August 1999. Originallypublished as A 6 – 49 T. Last previous edition A 6/A 6M – 98a. 2 For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SA-6/SA-6M in Section II of that Code. 1 Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.  requirements of this general specification or the individualmaterial specification.1.11 For purposes of determining conformance with thisspecification and the various material specifications referencedin 1.1, values shall be rounded to the nearest unit in theright-hand place of figures used in expressing the limitingvalues in accordance with the rounding method of PracticeE 29.1.12 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system is tobe used independently of the other, without combining valuesin any way.1.13 This specification and the applicable material specifi-cations are expressed in both inch-pound units and SI units;however, unless the order specifies the applicable “M” speci-fication designation (SI units), the material shall be furnishedto inch-pound units.1.14 The text of this specification contains notes and/orfootnotes that provide explanatory material. Such notes andfootnotes, excluding those in tables and figures, do not containany mandatory requirements. 2. Referenced Documents 2.1  ASTM Standards: A 370 Test Methods and Definitions for Mechanical Testingof Steel Products 3 A 673/A 673M Specification for Sampling Procedure forImpact Testing of Structural Steel 4 A 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for Domestic Shipment 5 A 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel Products 3 A 829 Specification for Plates,Alloy Steel, Structural Qual-ity 4 E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications 6 E 112 Test Methods for Determining Average Grain Size 7 E 208 Test Method for Conducting Drop-Weight Test toDetermine Nil-Ductility Transition Temperature of FerriticSteels 7 2.2  American Welding Society Standards: A5.1 Mild Steel Covered Arc-Welding Electrodes 8 A5.5 Low-Alloy Steel Covered Arc-Welding Electrodes 8 2.3  U.S. Military Standards: MIL-STD-129 Marking for Shipment and Storage 9 MIL-STD-163 Steel Mill Products Preparation for Ship-ment and Storage 9 2.4  U.S. Federal Standard: Fed. Std. No. 123 Marking for Shipments (Civil Agencies) 9 2.5  AIAG Standard: B-1 Bar Code Symbology Standard 10 3. Terminology 3.1  Definitions of Terms Specific to This Standard: 3.1.1  Plates  (other than floor plates or coiled product)—Flat, hot-rolled steel, classified as follows:  When Ordered to Thickness : (1)  Over 8 in. [200 mm] in width and 0.230 in. or over [over6 mm] in thickness. (2)  Over 48 in. [1200 mm] in width and 0.180 in. or over[over 4.5 mm] in thickness.  When Ordered to Weight  : (1)  Over 8 in. [200 mm] in width and 9.392 lb/ft 2 [47.10kg/m 2 ] or heavier. (2)  Over 48 in. [1200 mm] in width and 7.350 lb/ft 2 [35.32kg/m 2 ] or heavier. Slabs, sheet bars, and skelp, though frequentlyfalling in the foregoing size ranges, are not classed as plates. Coiled product is excluded from qualification toindividual material specifications governed by this specifica-tion until decoiled, leveled, cut to length, and, if required,properly tested by the processor in accordance with ASTMspecification requirements (see 6.4.2 and the individual mate-rial specification).3.1.2  Shapes (Flanged Sections) :  structural-size shapes —rolled flanged sections hav-ing at least one dimension of the cross section 3 in. [75 mm] orgreater. Structural shape size groupings used for tensile prop-erty classification are listed in Table A.  bar size shapes —rolled flanged sections having amaximum dimension of the cross section less than 3 in. [75mm].  “W” shapes —doubly-symmetric, wide-flangeshapes with inside flange surfaces that are substantially paral-lel.  “HP” shapes —are wide-flange shapes generallyused as bearing piles whose flanges and webs are of the samenominal thickness and whose depth and width are essentiallythe same.  “S” shapes —doubly-symmetric beam shapes withinside flange surfaces that have a slope of approximately16 2  ⁄  3  %.  “M” shapes —doubly-symmetric shapes that cannotbe classified as “W,”“ S,” or “HP” shapes.  “C” shapes —channels with inside flange surfacesthat have a slope of approximately 16 2  ⁄  3  %.  “MC” shapes —channels that cannot be classified as“C” shapes.  “L” shapes —shapes having equal-leg and unequal-leg angles. 3  Annual Book of ASTM Standards , Vol 01.03. 4  Annual Book of ASTM Standards , Vol 01.04. 5  Annual Book of ASTM Standards , Vol 01.05. 6  Annual Book of ASTM Standards , Vol 14.02. 7  Annual Book of ASTM Standards , Vol 03.01. 8 Available from the American Welding Society, 550 N.W. LaJeune Rd., Miami,FL 33135. 9 Available from the procuring activity or as directed by the contracting office orfrom the Standardization Documents Order Desk, Bldg. 4 Section D, 700 RobbinsAve., Philadelphia, PA 19111-5094 Attn: NPODS. 10 Available from the Automotive Industry Action Group, 26200 Lahser Road,Suite 200, Southfield, MI 48034. A 6/A 6M 2  TABLE A Shape Size Groupings for Tensile Property Classification N OTE  1—SI designations, fromAnnexA2, are shown in brackets.Tees cut from W, M, and S shapes fall within the same group as the shape from whichthey are cut. Shape Type Group 1 Group 2 Group 3 Group 4 Group 5W Shapes W24 3 55 & 62[W610 3 82& 92]W40 3 149 to 268 incl[W1000 3 222 to 399 incl]W40 3 277 to 328 incl[W1000 3 412 to 488 incl]W40 3 362 to 655 incl[W1000 3 539 to 976 incl]W36 3 920[W920 3 1369]W21 3 44 to 57 incl[W530 3 66 to 85 incl]W36 3 135 to 210 incl[W920 3 201 to 313 incl]W36 3 230 to 300 incl[W920 3 342 to 446 incl]W36 3 328 to 798 incl[W920 3 488 to 1188 incl]W14 3 605 to 873 incl[W360 3 900 to 1299 incl]W18 3 35 to 71 incl[W460 3 52 to 106 incl]W33 3 118 to 152 incl[W840 3 176 to 226 incl]W33 3 201 to 291 incl[W840 3 299 to 433 incl]W33 3 318 to 619 incl[W920 3 473 to 922 incl]W16 3 26 to 57 incl[W410 3 38.8 to 85 incl]W30 3 90 to 211 incl[W760 3 134 to 314 incl]W30 3 235 to 261 incl[W760 3 350 to 389 incl]W30 3 292 to 581 incl[760 3 434 to 865 incl]W14 3 22 to 53 incl[W360 3 32.9 to 79 incl]W27 3 84 to 178 incl[W690 3 125 to 263 incl]W27 3 194 to 258 incl[W690 3 289 to 384 incl]W27 3 281 to 539 incl[W690 3 419 to 802 incl]W12 3 14 to 58 incl[W310 3 21.0 to 86 incl]W24 3 68 to 162 incl[W610 3 101 to 241 incl]W24 3 176 to 229 incl[W610 3 262 to 341 incl]W24 3 250 to 492 incl[W610 3 372 to 732 incl]W10 3 12 to 45 incl[W250 3 17.9 to 67 incl]W21 3 62 to 147 incl[W530 3 92 to 219 incl]W21 3 166 to 223 incl[W530 3 248 to 331 incl]W21 3 248 to 402 incl[W530 3 370 to 599 incl]W8 3 10 to 48 incl[W200 3 15.0 to 71 incl]W18 3 76 to 143 incl[W460 3 113 to 213 incl]W18 3 158 to 192 incl[W460 3 235 to 286 incl]W18 3 211 to 311 incl[W460 3 315 to 464 incl]W6 3 9 to 25 incl[W150 3 13.5 to 37.1 incl]W16 3 67 to 100 incl[W410 3 100 to 149 incl]W14 3 145 to 211 incl[W360 3 216 to 314 incl]W14 3 233 to 550 incl[W360 3 347 to 818 incl]W5 3 16 & 19[W130 3 23.8& 28.1]W14 3 61 to 132 incl[W360 3 91 to 196 incl]W12 3 120 to 190 incl[W310 3 179 to 283 incl]W12 3 210 to 336 incl[W310 3 313 to 500 incl]W4 3 13[W100 3 19.3]W12 3 65 to 106 incl[W310 3 97 to 158 incl]W10 3 49 to 112 incl[W250 3 73 to 167 incl]W8 3 58 & 67[W200 3 86 & 100]M Shapes to 18.9 lb/ft, incl[to 28.1 kg/m, incl]S Shapes to 35 lb/ft, incl[to 52 kg/m, incl]over 35 lb/ft[over 52 kg/m]HP Shapes to 102 lb/ft, incl][to 152 kg/m, incl]over 102 lb/ft[over 152 kg/m]C Shapes to 20.7 lb/ft, incl[to 30.8 kg/m, incl]over 20.7 lb/ft[over 30.8 kg/m]MC Shapes to 28.5 lb/ft, incl[to 42.4 kg/m, incl]over 28.5 lb/ft[over 42.4 kg/m]L Shapes to  1  ⁄  2  in., incl[to 13 mm, incl]over  1  ⁄  2  to  3  ⁄  4  in., incl[over 13 to 19 mm, incl]over  3  ⁄  4  in.[over 19 mm] 3.1.3  Sheet Piling —rolled steel sections that are capable of being interlocked, forming a continuous wall when individualpieces are driven side by side.3.1.4  bars —rounds, squares, and hexagons, of all sizes; flats 13  ⁄  64  in. (0.203 in.) and over [over 5 mm] in specified thickness,not over 6 in. [150 mm] in specified width; and flats 0.230 in.and over [over 6 mm] in specified thickness, over 6 to 8 in.[150 to 200 mm] inclusive, in specified width.3.1.5  exclusive —when used in relation to ranges, as forranges of thickness in the tables of permissible variations indimensions, is intended to exclude only the greater value of therange. Thus, a range from 60 to 72 in. [1500 to 1800 mm]exclusive includes 60 in. [1500 mm], but does not include 72in. [1800 mm].3.1.6  rimmed steel —steel containing sufficient oxygen togive a continuous evolution of carbon monoxide during sol-dification, resulting in a case or rim of metal virtually free of voids.3.1.7  semi-killed steel —incompletely deoxidized steel con-taining sufficient oxygen to form enough carbon monoxideduring solidification to offset solidification shrinkage.3.1.8  capped steel —rimmed steel in which the rimmingaction is limited by an early capping operation. Capping iscarried out mechanically by using a heavy metal cap on abottle-top mold or chemically by an addition of aluminum orferrosilicon to the top of the molten steel in an open-top mold.3.1.9  killed steel —steel deoxidized, either by addition of strong deoxidizing agents or by vacuum treatment, to reducethe oxygen content to such a level that no reaction occursbetween carbon and oxygen during solidification.3.1.10  groupings for tensile property classification —insome of the material specifications, the tensile property re-quirements vary for different sizes of shapes due to mass effect,etc. For the convenience of those using the specifications, thevarious sizes of shapes have been divided into groups based onsection thickness at the standard tension test location (webs of beams, channels, and zees; legs of angles; and stems of tees).The material specifications designate shape sizes by referenceto the group designations. The groupings are shown in TableA.3.1.11  mill edge —the normal edge produced by rollingbetween horizontal finishing rolls. A mill edge does notconform to any definite contour. Mill edge plates have two milledges and two trimmed edges.3.1.12  universal mill edge —the normal edge produced byrolling between horizontal and vertical finishing rolls. Univer-sal mill plates, sometimes designated UM Plates, have two A 6/A 6M 3  universal mill edges and two trimmed edges.3.1.13  sheared edge —the normal edge produced by shear-ing. Sheared edge plates are trimmed on all edges.3.1.14  gas cut edge —the edge produced by gas flamecutting.3.1.15  special cut edge —usually the edge produced by gasflame cutting involving special practices such as pre-heating orpost-heating, or both, in order to minimize stresses, avoidthermal cracking and reduce the hardness of the gas cut edge.In special instances, special cut edge is used to designate anedge produced by machining.3.1.16  sketch —when used to describe a form of plate,denotes a plate other than rectangular, circular, or semi-circular. Sketch plates may be furnished to a radius or with fouror more straight sides.3.1.17  normalizing —a heat treating process in which a steelplate is reheated to a uniform temperature above the uppercritical temperature and then cooled in air to below thetransformation range.3.1.18  plate-as-rolled  —when used in relation to the loca-tion and number of tests, the term refers to the unit plate rolledfrom a slab or directly from an ingot. It does not refer to thecondition of the plate. 4. Ordering Information 4.1 Information items to be considered, if appropriate, forinclusion in purchase orders are as follows:4.1.1 ASTM specification designation (see 1.1) and year of issue,4.1.2 Name of material (plates, shapes, bars, or sheetpiling),4.1.3 Shape designation, or size and thickness or diameter,4.1.4 Grade, class, and type designation, if applicable,4.1.5 Condition (see Section 7), if other than as-rolled,4.1.6 Quantity (weight [mass] or number of pieces),4.1.7 Length,4.1.8 Exclusion of either structural product from coil ordiscrete cut lengths of flat product (see 6.3 and Appendix X1),if applicable,4.1.9 Heat treatment requirements (see 7.2 and 7.3), if any,4.1.10 Mechanical property test report requirements (seeSection 15), if any,4.1.11 Special packaging, marking, and loading for ship-ment requirements (see Section 18), if any,4.1.12 Supplementary requirements, if any, including anyadditional requirements called for in the supplementary re-quirements,4.1.13 End use, if there are any end-use-specific require-ments (see 5.1, 12.3.4, Table 22 or Table A1.23, and Table 24or Table A1.25), and4.1.14 Special requirements (see 1.10), if any,4.1.15 Repair welding requirements (see 10.5), if any. 5. Identification of Material 5.1  Plates —Each plate shall be steel die-stamped, marked,or stenciled in one place with specification number (year of issue not required), grade, heat number, manufacturer’s name,brand, or trademark (mill identification marks), size andthickness. For plates provided from coils, the processor identityrather than that of the manufacturer shall be used. For securedlifts of all sizes of plates  3  ⁄  8  in. [10 mm] (or  5  ⁄  16 in. [8 mm] formaterial specified for bridge construction end use) or under inthickness, and for secured lifts of all thicknesses of plates 36 in.[900 mm] or under in width, the manufacturer or processorshall have the option of placing such markings on only the toppiece of each lift, or of showing such markings on a substantialtag attached to each lift, unless otherwise specified. (See also5.6.)5.2  Shapes —Shapes shall be marked with the heat number,size of section, length, and mill identification marks on eachpiece. Either the manufacturer’s name, brand, or trademark (mill identification marks) shall be shown in raised letters atintervals along the length. In addition, shapes shall be identi-fied with the specification number (year of issue not required)and grade, either by marking each piece individually or, if bundled, by attaching a substantial tag to the bundle. For smallshapes with the greatest cross-sectional dimension not greaterthan 6 in. [150 mm], the manufacturer or processor shall havethe option of bundling the product for shipment, with each liftmarked or tagged showing the previously listed identification.(See also 5.6.)5.3  Steel Sheet Piling —Steel sheet piling shall be markedwith the heat number, size of section, length, and mill identi-fication marks on each piece. Either the manufacturer’s name,brand, or trademark (mill identification marks) shall be shownin raised letters at intervals along the length.5.4  Bars —Bars of all sizes, when loaded for shipment, shallbe properly identified with the name or brand of manufacturer(mill identification marks), purchaser’s name and order num-ber, the specification number, grade number where appropriate,size and length, weight [mass] of lift, and the heat number foridentification. Unless otherwise specified, the method of mark-ing is at the manufacturer’s option and shall be made by hotstamping, cold stamping, painting, or marking tags attached tothe lifts of bars. Bars are not required to be die-stamped.5.5  Bar Coding —In addition to the requirements of 5.1 to5.4 inclusive, the manufacturer or processor shall have theoption of using bar coding as a supplementary identificationmethod. N OTE  2—Bar coding should be consistent with AIAG Standard B-1. 5.6  Specification Identification —In addition to the require-ments of 5.1 or 5.2, material ordered to one of the specifica-tions and grades for which a color code is given in 5.6.3 shallbe marked with the applicable specification number and grade.The year of issue of the specification to which the material isfurnished need not be included in the marking. Color identifi-cation shall be applied as follows:5.6.1  Plates —When specified by the purchaser, each plate(except for plates in secured lifts) shall be marked with thecolor designated in 5.6.3 along one edge or on the rolledsurface within 12 in. [300 mm] of the heat number identifica-tion. For plates in secured lifts, the manufacturer or processorshall have the option of marking the color identification with avertical stripe for the full height of the lift, such that each plateis marked with the stripe.5.6.2  Shapes —Each structural shape or lift shall be markedwith the color designated in 5.6.3 on one cut end or across the A 6/A 6M 4
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks