ASTM A512-2006 Standard Specification for Cold-Drawn Buttweld Carbon Steel Mechanical Tubing《冷拉对缝焊碳素钢机械管的标准规范》.pdf

1、Designation: A 512 06Standard Specification forCold-Drawn Buttweld Carbon Steel Mechanical Tubing1This standard is issued under the fixed designation A 512; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.

2、 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 covers cold-drawn buttweld car

3、bonsteel tubes for use as mechanical tubing.1.2 This specification covers round, square, rectangular, andspecial shape mechanical tubing.1.3 Round tube size ranges covered are outside diameters upto 312 in. (88.9 mm) and wall thickness from 0.035 to 0.500in. (0.89 to 12.70 mm).1.4 Optional supplemen

4、tary requirements are provided and,when desired, shall be so stated in the order.1.5 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. R

5、eferenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 1040 Guide for Specifying Harmonized Standard GradeCompositions for Wrought Carbon, Low-Alloy, and AlloySteelsE59 Practice for Sampling Steel and Iron for Determinationof Chemical Compo

6、sition32.2 Military Standards:4MIL-STD-129 Marking for Shipment and StorageMIL-STD-163 Steel Mill Products Preparation for Ship-ment and Storage2.3 Federal Standard:Fed. Std. No. 123 Marking for Shipments (Civil Agencies)43. Ordering Information3.1 Orders for material under this specification should

7、include the following, as required, to describe the requiredmaterial adequately:3.1.1 Quantity (feet, weight (Note 1), or number of lengths),NOTE 1The term “weight” is temporarily used in this specificationbecause of established trade usage. The word is used to mean both “force”and “mass,” and care

8、must be taken to determine which is meant in eachcase (SI unit for force = newton and for mass = kilogram).3.1.2 Name of material (buttweld carbon steel mechanicaltubing),3.1.3 Form (round, square, rectangular, special shape),3.1.4 Condition, description and code letters (Section 5),3.1.5 Grade, if

9、required (Section 6),3.1.6 Dimensions (round, Section 9 or square and rectangu-lar, Section 10),3.1.7 Length (round length, 9.2; square and rectangularlength, 10.5),3.1.8 Burr removal (Section 11),3.1.9 Report of chemical analysis and products analysis, ifrequired,3.1.10 Individual supplementary req

10、uirements if required(S1 through S5),3.1.11 Special requirements,3.1.12 End use,3.1.13 Specification designation,3.1.14 Special marking (Section 15), and3.1.15 Special packaging (Section 16).4. Materials and Manufacture4.1 The steel shall be made by any process.4.2 If a specific type of melting is r

11、equired by the purchaser,it shall be as stated on the purchase order.4.3 The primary melting may incorporate separate degas-sing or refining, and may be followed by secondary melting,such as electroslag or vacuum-arc remelting. If secondarymelting is employed, the heat shall be defined as all of the

12、ingots remelted from a single primary heat.4.4 Steel may be cast in ingots or may be strand cast. Whensteel of different grades is sequentially strand cast, identifica-tion of the resultant transition material is required. The1This specification is under the jurisdiction of ASTM Committee A01 on Ste

13、el,Stainless Steel, and RelatedAlloys, and is the direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Oct. 1, 2006. Published October 2006. Originallyapproved in 1964. Last previous edition approved in 2005 as A 512 96 (2005).2For referenced ASTM sta

14、ndards, 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.3Withdrawn.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 7

15、00Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.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, United States.producer shall remove the transition material by an establishe

16、dprocedure that positively separates the grades.4.5 Tubes shall be made by the furnace buttweld process.4.6 Tubes shall be cold finished, either externally only(sunk) or externally and internally (mandrel drawn).5. Condition5.1 The purchaser shall specify in the order one of thefollowing conditions:

17、MD (Mandrel Drawn)No final thermal treatmentSD (Sink Drawn)No final thermal treatmentMDSRMandrel Drawn and Stress RelievedSDSRSink Drawn and Stress RelievedMDSAMandrel Drawn and SoftAnnealed or normalizedSDSASink Drawn and Soft Annealed or normalizedNORM-MD-SRNormalized, Mandrel Drawn, and StressRel

18、ievedNORM-SD-SRNormalized, Sink Drawn, and Stress Re-lieved6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1 or Table 2 (seeSpecification A 1040) and Table 3.6.2 When a grade is ordered under this specification, sup-plying an alloy

19、 grade that specifically requires the addition ofany element other than those listed for the ordered grade inTable 1 or Table 2 is not permitted.7. Heat Analysis7.1 An analysis of each heat of steel shall be made by thesteel manufacturer to determine the percentages of the ele-ments specified; if se

20、condary melting processes are used, theheat analysis shall be obtained from one remelted ingot or theproduct of one remelted ingot of each primary melt. The heatanalysis shall conform to the requirements specified, exceptthat where the heat identity has not been maintained or wherethe analysis is no

21、t sufficiently complete to permit conformanceto be determined, the chemical composition determined from aproduct analysis made by the tubular manufacturer shallconform to the requirements specified for heat analysis. Whenrequested in the order or contract, a report of such analysesshall be furnished

22、 to the purchaser.7.2 A report of this analysis shall be furnished only whenrequested on the order.8. Product Analysis8.1 When requested on the purchase order, a product analy-sis shall be made by the manufacturer. The chemical compo-sition thus determined shall conform to the requirementsprescribed

23、 in Table 1 or Table 2 as modified by Table 3.8.2 The product analysis limits shown for carbon are notnormally applicable to the MT grades.8.3 The number and source of samples for such productanalysis shall be based on the individual heat or lot identity ofone of the following forms of material.8.3.

24、1 Heat Identity MaintainedOne product analysis perheat on either a billet, a length of flat rolled stock, or a tube.8.3.2 Heat Identity Not MaintainedOne product analysisfrom one tube per 2000 ft (610 m) or less for sizes over 3 in.(76.2 mm), or one product analysis from one tube per 5000 ft(1524 m)

25、 or less for sizes under 3 in. (76.2 mm).8.4 If the original test for product analysis fails, retests of 2additional billets, 2 lengths of flat rolled stock, or 2 tubes shallbe made. Both retests for the elements in question shall meetthe requirements of this specification; otherwise all remainingma

26、terial in the heat or lot shall be rejected, or at the option ofthe producer, each billet, length, flat rolled stock, or tube maybe individually tested for acceptance.8.5 Samples for product analysis, except for spectrochemi-cal analysis, shall be taken in accordance with Practice E59,TABLE 1 Chemic

27、al RequirementsAGradeDesignationChemical Composition Limits, %Carbon ManganesePhospho-rus, maxSulfur, maxMT 1010 0.050.15 0.300.60 0.04 0.045MT 1015 0.100.20 0.300.60 0.04 0.045MT X 1015 0.100.20 0.600.90 0.04 0.045MT 1020 0.150.25 0.300.60 0.04 0.045MT X 1020 0.150.25 0.701.00 0.04 0.045ARimmed or

28、capped steels which may be used for the above grades arecharacterized by a lack of uniformity in their chemical composition, and for thisreason product analysis is not technologically appropriate unless misapplication isclearly indicated.TABLE 2 Chemical Requirements for Other Carbon GradesAGradeDes

29、ig-nationBChemical Composition Limits, %Carbon ManganesePhospho-rus, maxSulfur, max1008 0.10 max 0.300.50 0.040 0.0451010 0.080.13 0.300.60 0.040 0.0451012 0.100.15 0.300.60 0.040 0.0451015 0.130.18 0.300.60 0.040 0.0451016 0.130.18 0.600.90 0.040 0.0451018 0.150.20 0.600.90 0.040 0.0451019 0.150.20

30、 0.701.00 0.040 0.0451020 0.180.23 0.300.60 0.040 0.0451021 0.180.23 0.600.90 0.040 0.0451025 0.220.28 0.300.60 0.040 0.0451026 0.220.28 0.600.90 0.040 0.0451030 0.280.34 0.600.90 0.040 0.0451035 0.320.38 0.600.90 0.040 0.0451110 0.080.13 0.300.60 0.040 0.130C1115 0.130.20 0.600.90 0.040 0.130C1117

31、0.140.20 1.001.30 0.040 0.130CARimmed or capped steels which may be used for the above grades arecharacterized by a lack of uniformity in their chemical composition, and for thisreason product analysis is not technologically appropriate unless misapplication isclearly indicated.BOther analyses are a

32、vailable.CGrades 1110, 1115, and 1117 shall contain 0.08 min % sulfur.TABLE 3 Tolerances for Product Analysis for Steels Shown inTable 1ElementLimit, or Maximumof SpecifiedRange, %Variation, Over Maximum Limit orUnder Minimum LimitUnder min, % Over max, %Carbon To 0.15, inclOver 01.50.020.030.030.04

33、Manganeses To 0.60, inclOver 0.600.030.040.030.04PhosphorusSulfur.0.010.01A512062and the composition thus determined shall correspond to therequirements in applicable section or table.9. Permissible Variations in Dimensions of Round Tubing9.1 Diameter and Wall Thickness:9.1.1 Variations in outside d

34、iameter, inside diameter, andwall thickness shall not exceed the amounts prescribed in Table4.9.1.2 These variations apply to round, unannealed, andstress-relieved tubing.9.1.3 Diameter tolerance includes ovality.9.1.4 Sink tubing is normally ordered by outside diameterand nominal wall. Mandrel-draw

35、n tubing is normally orderedby outside diameter and inside diameter and may be ordered byoutside diameter or inside diameter and wall thickness but notby all three dimensions.9.2 LengthRandom lengths between acceptable limitswill be furnished, utilizing the full mill length. Tubing will becut in hal

36、f if specified. Full length random tubing will have aspread not exceeding 7 ft (2.1 m). Half-length random tubingwill have a spread not exceeding 4 ft (1.2 m). Not more than10 % of the total footage of a shipment may be furnished inlengths shorter than the minimum specified but not less than6 ft (1.

37、8 m).9.2.1 When specified, multiple lengths will be furnished andshould include allowances made for the customers cutting toolwidth and grippage. Maximum and minimum lengths may bespecified with the understanding that not more than 10 % of thetotal footage in a shipment may be furnished in individua

38、lmultiples cut to the customers specifications.9.2.2 Variations from the specified length shall not exceedthe amounts prescribed in Table 5.9.3 Straightness:9.3.1 Around tube shall be considered straight provided thatno 3-ft (0.9-m) section departs from a straight line by morethan 0.030 in. (0.76 mm

39、).9.3.2 The straightness of round tubes shorter than 3 ft (0.9m) shall be proportionate to 0.010 in./ft (0.8 mm/m).9.3.3 These straightness tolerances do not apply to soft-annealed tubing nor to long lengths of small diameter tubing.10. Permissible Variations in Dimensions of Square andRectangular T

40、ubing10.1 Outside Dimensions and Wall ThicknessVariationsin largest outside dimensions across flats and wall thicknessshall not exceed the amounts prescribed in Table 6.10.2 Corner RadiiThe corners of square and rectangulartubes shall be slightly rounded inside and slightly roundedoutside consistent

41、 with wall thickness. The outside cornersmay be slightly flattened. The radii of corners for square andrectangular cold-finished buttweld tubes shall be in accordancewith Table 7. Special radii may be obtained.10.3 Squareness TolerancePermissible variations for theside of square and rectangular tube

42、 shall be determined by thefollowing equation:6 b 5 c 3 0.006, in. mm!where:b = tolerance for out-of-square, andc = largest external dimensions across flats, in. (mm).The squareness of sides is commonly determined by one ofthe following methods:10.3.1 A square, with two adjustable contact points on

43、eacharm, is placed on two sides. A fixed feeler gage is then used tomeasure the maximum distance between the free contact pointand the surface of the tubing.TABLE 4 Diameter and Wall Thickness Tolerances for Round TubingOutside Diameter Range, in. (mm)Outside Diameter, in. (mm) Inside Diameter, in.

44、(mm) Wall Thickness, %Over Under Over Under Over UnderSunkUp to12 (12.7), excl 0.004 (0.10) 0 . . . . . . 15A1512 to 112 (12.7 to 38.1), excl 0.005 (0.13) 0 . . . . . . 10A10112 to 3 (38.1 to 76.2), incl 0.010 (0.25) 0 . . . . . . 10A10Mandrel DrawnLess than 0.156 (3.96) wall:Up to12 (12.7), excl12

45、to 112 (12.7 to 38.1), excl0.004 (0.10)0.005 (0.13)00000.010 (0.25)0.005 (0.13)B1212101212100.156 (3.96) wall and over:12 to 112 (12.7 to 38.1), excl 0.005 (0.13) 0 0 0.005 (0.13)B77Under 0.156 (3.96) wall:112 (38.1) and over 0.010 (0.25) 0 . . . 0.010 (0.25) 10 100.156 (3.96) wall and over:112 (38.

46、1) and over 0.010 (0.25) 0 0 0.010 (0.25) 7 7AExcept at the weld line, where the weld pad may exceed this figure.BTubes with an inside diameter under12 in. (12.7 mm) may require more than 0.005 in. (0.13 mm) inside diameter tolerance and the producer should be consulted.TABLE 5 Permissible Variation

47、s in LengthRound TubingLengths 4 ft (1.2 m) and underup to 2 in. (50.8mm) diameter6132 in. (0.8 mm)Lengths 4 ft (1.2 m) and underover 2 in. (50.8mm) diameter6364 in. (1.2 mm)Lengths 4 ft to 10 ft (1.2 to 3.0 m), inclup to 2in. (50.8 mm) diameter6364 in. (1.2 mm)Lengths 4 ft to 10 ft (1.2 to 3.0 m),

48、inclover 2in. (50.8 mm) diameter6116 in. (1.6 mm)Lengths 10 ft to 24 ft (3.0 to 7.3 m), inclalldiameters618 in. (3.2 mm)Lengths over 24 ft (7.3 m)all diameters 618 in. (3.2 mm)AAPlus an additional tolerance of 6116 (1.6 mm) for each 10 ft (3.0 m) or fractionover 24 ft (7.3 m).A51206310.3.2 A square,

49、 equipped with direct-reading vernier, maybe used to determine the angular deviation which, in turn, maybe related to distance to inches.10.4 Twist ToleranceVariation in twist for square andrectangular tubing shall not exceed the amounts prescribed inTable 8. The twist in square and rectangular tubing may bemeasured by holding one end of the tubing on a surface plateand noting the height of either corner of the opposite end ofsame side above the surface plate. Twist may also be measuredby mean