ASTM A1035 A1035M-2007 Standard Specification for Deformed and Plain Low-carbon Chromium Steel Bars for Concrete Reinforcement.pdf

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1、Designation: A 1035/A 1035M 07Standard Specification forDeformed and Plain, Low-carbon, Chromium, Steel Bars forConcrete Reinforcement1This standard is issued under the fixed designation A 1035/A 1035M; the number immediately following the designation indicates theyear of original adoption or, in th

2、e case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers low-carbon, chromium, steelbars, deformed and plain for co

3、ncrete reinforcement in cutlengths and coils. The standard sizes and dimensions ofdeformed bars and their number designations are given inTable 1. The text of this specification references notes andfootnotes which provide explanatory material. These notes andfootnotes (excluding those in tables and

4、figures) shall not beconsidered as requirements of the specification.1.2 Bars are of two minimum yield strength levels asdefined in 9.2: namely, 100 000 psi 690 MPa, and 120 000830 MPa designated as Grade 100 690 and Grade 120830, respectively.NOTE 1Caution: Designers need to be aware that typical d

5、esignstandards limit the design strength to 80 000 psi 550 MPa, except forprestressing steel and for spiral transverse reinforcement. Membersreinforced with bars with yield strengths that are considerably above80 000 psi 550 MPa may exhibit behavior that differs from that expectedof conventional rei

6、nforced concrete members or may require specialdetailing to ensure adequate performance at service and factored loads.1.3 Deformed bars shall have a minimum yield strength andother tensile properties in accordance with Table 2. Hot-rolledplain rounds in sizes up to and including 2.25 in. 57.2 mm ind

7、iameter in coils or cut lengths when specified for dowels,spirals, structural ties or bar supports shall be furnished underthis specification and shall also meet the tensile propertiesrequirements of Table 2. Ductility properties for plain roundsshall be those of the nearest smaller nominal diameter

8、 de-formed bar size in Table 2. Requirements covering deformationdimensions and marking are not applicable to plain rounds.NOTE 2Welding of the material in this specification should beapproached with caution since no specific provisions have been includedto enhance its weldability. When this steel i

9、s to be welded, a weldingprocedure suitable for the chemical composition and intended use orservice should be used.1.4 This specification is applicable for orders in eitherinch-pound units (as Specification A 1035) or in SI units (asSpecification A 1035M).1.5 The values stated in either inch-pound u

10、nits or SI unitsare to be regarded as standard. Within the text, the SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each system must be used inde-pendently of the other. Combining values from the two systemsmay result in nonconformance with the s

11、pecification.2. Referenced Documents2.1 ASTM Standards:2A 6/A 6M Specification for General Requirements forRolled Structural Steel Bars, Plates, Shapes, and SheetPilingA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 510 Specification for General Requirements for WireRods

12、and Coarse Round Wire, Carbon SteelA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specif

13、ications2.2 U.S. Military Standard:3MIL STD-129 Marking for Shipment and Storage32.3 U.S. Federal Standard:3Fed. Std. No. 123 Marking for Shipment (Civil Agencies)33. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 deformations, nprotrusions on a deformed bar.1This specification

14、is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05 on Steel Reinforcement.Current edition approved March 1, 2007. Published March 2007. Originallyapproved in 2004. Last previous edition approved in 2006 a

15、sA 1035/A 1035M 06.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents

16、Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. Or visit: http:/assist.daps.dla.mil/online.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,

17、United States.3.1.2 deformed bar, nsteel bar with protrusions; a bar thatis intended for use as reinforcement in reinforced concreteconstruction.3.1.2.1 DiscussionThe surface of the bar is provided withlugs or protrusions that inhibit longitudinal movement of thebar relative to the concrete surround

18、ing the bar in suchconstruction. The lugs or protrusions conform to the provisionsof this specification.3.1.3 lot, nall the bars of one bar size or pattern ofdeformation contained in an individual shipping release orshipping order.3.1.4 plain bar, nsteel bar without protrusions.3.1.5 rib, nlongitudi

19、nal protrusion on a deformed bar.4. Ordering Information4.1 It shall be the responsibility of the purchaser to specifyall requirements that are necessary for material ordered to thisspecification. Such requirements shall include but are notlimited to the following:4.1.1 Quantity (weight) mass,4.1.2

20、Name of material: low-carbon, chromium, steel barsfor concrete reinforcement,4.1.3 Size,4.1.4 Cut lengths or coils,4.1.5 Deformed or plain,4.1.6 Grade,4.1.7 Packaging (see Section 21),4.1.8 ASTM designation and year of issue, and4.1.9 Certified mill test reports.5. Materials and Manufacture5.1 The b

21、ars shall be rolled from properly identified heats ofmold cast or strand cast steel using the basic oxygen, electric-furnace, or open-hearth process.6. Chemical Composition6.1 The chemical analysis of each heat shall be determinedin accordance with Test Methods A 751. The manufacturershall make the

22、analysis on test samples taken preferably duringthe pouring of the heat. The percentages of carbon, manganese,phosphorus, sulfur, silicon, chromium, and nitrogen, shall bedetermined and reported as required in Section 16.6.2 The chemical composition as shown by heat analysisshall be limited by the f

23、ollowing:Element max,ACarbon 0.15 %Chromium 8.0 to 10.9 %Manganese 1.5 %Nitrogen 0.05 %Phosphorus 0.035 %Sulfur 0.045 %Silicon 0.50 %AMaximum unless range is indicated Percentages refer to weight percentages.7. Requirements for Deformation7.1 Deformations shall be spaced along the bar at substan-tia

24、lly uniform distances. The deformations on opposite sides ofthe bar shall be similar in size, shape, and pattern.7.2 The deformations shall be placed with respect to the axisof the bar so that the included angle is not less than 45. Wherethe line of deformations forms an included angle with the axis

25、of the bar from 45 to 70 inclusive, the deformations shallTABLE 1 Deformed Bar Designation Numbers, Nominal Weights Masses, Nominal Dimensions, and Deformation RequirementsBar DesignationNo.ANominal Weight, lb/ftNominal Mass, kg/mNominal DimensionsBDeformation Requirements, in. mmDiameter,in. mmCros

26、s-SectionalArea,in.2mm2Perimeterin. mmMaximumAverageSpacingMinimumAverageHeightMaximum Gap(Chord of 12.5 % ofNominal Perimeter)3 10 0.376 0.560 0.375 9.5 0.11 71 1.178 29.9 0.262 6.7 0.015 0.38 0.143 3.64 13 0.668 0.994 0.500 12.7 0.20 129 1.571 39.9 0.350 8.9 0.020 0.51 0.191 4.95 16 1.043 1.552 0.

27、625 15.9 0.31 199 1.963 49.9 0.437 11.1 0.028 0.71 0.239 6.16 19 1.502 2.235 0.750 19.1 0.44 284 2.356 59.8 0.525 13.3 0.038 0.97 0.286 7.37 22 2.044 3.042 0.875 22.2 0.60 387 2.749 69.8 0.612 15.5 0.044 1.12 0.334 8.58 25 2.670 3.973 1.000 25.4 0.79 510 3.142 79.8 0.700 17.8 0.050 1.27 0.383 9.79 2

28、9 3.400 5.060 1.128 28.7 1.00 645 3.544 90.0 0.790 20.1 0.056 1.42 0.431 10.910 32 4.303 6.404 1.270 32.3 1.27 819 3.990 101.3 0.889 22.6 0.064 1.63 0.487 12.411 36 5.313 7.907 1.410 35.8 1.56 1006 4.430 112.5 0.987 25.1 0.071 1.80 0.540 13.714 43 7.65 11.38 1.693 43.0 2.25 1452 5.32 135.1 1.185 30.

29、1 0.085 2.16 0.648 16.518 57 13.60 20.24 2.257 57.3 4.00 2581 7.09 180.1 1.58 40.1 0.102 2.59 0.864 21.9ABar numbers are based on the number of eighths of an inch included in the nominal diameter of the bars bar numbers approximate the number of millimeters of thenominal diameter of the bar.BThe nom

30、inal dimensions of a deformed bar are equivalent to those of a plain round bar having the same weight mass per foot meter as the deformed bar.TABLE 2 Tensile Properties RequirementsGrade 100 690 Grade 120 830Tensile strength, min, psi MPa 150 000 1030 150 000 1030Yield strength (0.2 % offset), min,

31、psi MPa 100 000 690 120 000 830Stress corresponding to an extension under loadof 0.0035 in./in. (0.0035 mm/mm), min, psi MPa80 000 550 90 000 620Elongation in 8 in. 203.2 mm, min. %:Bar Designation No.3 through 11 10 through 36 7 714, 18 43, 57 6 A 1035/A 1035M 072alternately reverse in direction on

32、 each side, or those on oneside shall be reversed in direction from those on the oppositeside. Where the line of deformations is over 70, a reversal indirection shall not be required.7.3 The average spacing or distance between deformationson each side of the bar shall not exceed seven tenths of then

33、ominal diameter of the bar.7.4 The overall length of deformations shall be such that thegap (measured as a chord) between the ends of the deforma-tions on opposite sides of the bar shall not exceed 1212 %ofthe nominal perimeter of the bar. Where the ends terminate ina longitudinal rib, the width of

34、the longitudinal rib shall beconsidered the gap. Where more than two longitudinal ribs areinvolved, the total width of all longitudinal ribs shall notexceed 25 % of the nominal perimeter of the bar; furthermore,the summation of gaps shall not exceed 25 % of the nominalperimeter of the bar. The nomin

35、al perimeter of the bar shall be3.1416 times the nominal diameter.7.5 The spacing, height, and gap of deformations shallconform to the requirements prescribed in Table 1.8. Measurements of Deformation8.1 The average spacing of deformations shall be deter-mined by measuring the length of a minimum of

36、 10 spaces anddividing that length by the number of spaces included in themeasurement. The measurement shall begin from a point on adeformation at the beginning of the first space to a correspond-ing point on a deformation after the last included space.Spacing measurements shall not be made over a b

37、ar areacontaining bar marking symbols involving letters or numbers.8.2 The average height of deformations shall be determinedfrom measurements made on not less than two typical defor-mations. Determinations shall be based on three measurementsper deformation, one at the center of the overall length

38、and theother two at the quarter points of the overall length.8.3 Insufficient height, insufficient circumferential cover-age, or excessive spacing of deformations shall not constitutecause for rejection unless it has been clearly established bydeterminations on each lot tested that typical deformati

39、onheight, gap, or spacing do not conform to the minimumrequirements prescribed in Section 7. No rejection shall bemade on the basis of measurements if fewer than ten adjacentdeformations on each side of the bar are measured.9. Tensile Requirements9.1 The material, as represented by the test specimen

40、s, shallconform to the requirements for tensile properties prescribed inTable 2.9.2 The yield strength shall be determined by the offsetmethod (0.2 % offset), described in Test Methods and Defini-tions A 370. In addition, the stress corresponding to a tensilestrain of 0.0035 shall be a minimum of 80

41、 000 psi 550 MPafor Grade 100 and 90 000 psi 620 MPa for Grade 120.NOTE 3The stress-strain curves for bars meeting this specification donot have a well-defined yield point (that is, yield is not characterized bya sharp knee or discontinuity similarly to stainless steel bars). Theprovisions of 9.2 re

42、quire that the yield strength (minimum 100 000 psi forGrade 100 690 MPa and minimum 120 000 psi for Grade 120 830MPa, respectively) be measured by the 0.2 % offset method and that thestress corresponding to a strain of 0.0035 be a minimum of 80 000 psi forGrade 100 and 90 000 psi 620 MPa for Grade 1

43、20. Experimental resultsfor concrete beams reinforced with bars meeting this specification showthat the flexural strength of under-reinforced members is conservativelypredicted based on the yield strength measured using the 0.2 % offsetmethod. The minimum stress corresponding to a tensile strain of

44、0.0035 isrequired to ensure that the specified steel is at least as stiff at lower strainsas lower-strength reinforcing bars.9.3 The percentage of elongation shall be as prescribed inTable 2.10. Bending Requirements10.1 The bend test specimen shall withstand being bentaround a pin without cracking o

45、n the outside radius of the bentportion. The requirements for degree of bending and sizes ofpins are prescribed in Table 3. When material is furnished incoils, the test sample shall be straightened prior to placement inthe bend tester.10.2 The bend test shall be made on specimens of sufficientlength

46、 to ensure free bending and with apparatus, whichprovides:10.2.1 Continuous and uniform application of forcethroughout the duration of the bending operation.10.2.2 Unrestricted movement of the specimen at points ofcontact with the apparatus and bending around a pin free torotate.10.2.3 Close wrappin

47、g of the specimen around the pinduring the bending operation.10.3 It is permissible to use more severe methods of bendtesting, such as placing a specimen across two pins free torotate and applying the bending force with a fixed pin. Whenfailures occur under more severe methods, retests shall bepermi

48、tted under the bend test method prescribed in 10.2.11. Permissible Variation in Weight Mass11.1 Deformed reinforcing bars shall be evaluated on thebasis of nominal weight mass. The weight mass determinedusing the measured weight mass of the test specimen androunding in accordance with Practice E29,

49、shall be at least94 % of the applicable weight mass per unit length prescribedin Table 1. In no case shall overweight excess mass of anydeformed bar be the cause for rejection. Weight massvariation for plain rounds shall be computed on the basis ofpermissible variation in diameter. For plain bars smaller than38