1、Designation: A554 11A554 13Standard Specification forWelded Stainless Steel Mechanical Tubing1This standard is issued under the fixed designation A554; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu
2、mber in parentheses indicates the year of last reapproval. Asuperscript epsilon () 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 welded austenitic and ferriti
3、c stainless steel mechanical tubing intended for use in ornamental,structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed. The gradescovered are listed in Table 1.1.2 This specification covers as-welded or cold-reduced mechanical tubing
4、 in sizes to 16 in. (406.4 mm) outside dimension, andin wall thicknesses 0.020 in. (0.51 mm) and over.1.3 Tubes shall be furnished in one of the following shapes as specified by the purchaser: round, square, rectangular, or special.1.4 Supplementary requirements of an optional nature are provided an
5、d when desired shall be so stated in the order.1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM Stan
6、dards:2A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsA941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys2.2 Military Standards:MIL-STD-129 Marking for Shi
7、pment and Storage3MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage32.3 Federal Standard:Fed. Std. No. 123 Marking for Shipments (Civil Agencies)33. Terminology3.1 DefinitionsFor definitions of terms used in this specification, refer to Terminology A941.4. Ordering Information4.1
8、Orders for material under this specification should include the following, as required, to describe the desired materialadequately:4.1.1 Quantity (feet, mass, or number of pieces),4.1.2 Name of material (welded stainless steel mechanical tubing),4.1.3 Form (round, square, rectangular, special, see 1
9、.3),4.1.4 Dimensions:4.1.4.1 Round-outside diameter and wall thickness for all conditions (Section 9). Alternatively, for cold-reduced condition,outside diameter and inside diameter or inside diameter and wall dimensions may be specified,4.1.4.2 Square and rectangular outside dimensions and wall thi
10、ckness (see 10.1),1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.10on Stainless and Alloy Steel Tubular Products.Current edition approved Oct. 15, 2011April 1, 2013. Published Novemb
11、er 2011May 2013. Originally approved in 1965. Last previous edition approved in 20102011 asA55410.11. DOI: 10.1520/A0554-11.10.1520/A0554-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolum
12、e information, refer to the standards Document Summary page on the ASTM website.3 Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 191115094, Attn: NPODS.This document is not an ASTM standard and is intended only to provide the user of an AST
13、M standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published
14、by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.4.3 Special (to be specified),4.1.5 Length (mill lengths, cut lengt
15、hs, or multiple lengths (see 9.3),4.1.6 Grade (Table 1),4.1.7 Condition (see 7.1),4.1.8 Inside diameter bead condition (see 7.2),TABLE 1 Chemical RequirementsUNS # GradeComposition, %Carbon,maxManga-nese,maxPhos-phorus,maxSulfur,maxSilicon,maxNickel Chromium Molybdenum Titanium Columbium+ TantalumNi
16、trogenAusteniticMT-301 0.15 2.00 0.045 0.030 1.00 6.08.0 16.018.0 . . .MT-302 0.15 2.00 0.045 0.030 1.00 8.010.0 17.019.0 . . .MT-304 0.08 2.00 0.045 0.030 1.00 8.011.0 18.020.0 . . .MT-304L 0.035A 2.00 0.045 0.030 1.00 8.013.0 18.020.0 . . .MT-305 0.12 2.00 0.045 0.030 1.00 10.013.0 17.019.0 . . .M
17、T-309S 0.08 2.00 0.045 0.030 1.00 12.015.0 22.024.0 . . . . .MT-309S-Cb 0.08 2.00 0.045 0.030 1.00 12.015.0 22.024.0 . . BMT-310S 0.08 2.00 0.045 0.030 1.00 19.022.0 24.026.0 . . .MT-316 0.08 2.00 0.045 0.030 1.00 10.014.0 16.018.0 2.03.0 . .MT-316L 0.035A 2.00 0.045 0.030 1.00 10.015.0 16.018.0 2.0
18、3.0 . .MT-317 0.08 2.00 0.045 0.030 1.00 11.014.0 18.020.0 3.04.0 . .MT-321 0.08 2.00 0.045 0.030 1.00 9.013.0 17.020.0 . C .MT-330 0.15 2.00 0.040 0.030 1.00 33.036.0 14.016.0 . . .MT-347 0.08 2.00 0.045 0.030 1.00 9.013.0 17.020.0 . . BFerriticMT-429 0.12 1.00 0.040 0.030 1.00 0.50 max 14.016.0 .
19、. .MT-430 0.12 1.00 0.040 0.030 1.00 0.50 max 16.018.0 . . .MT-430-Ti 0.10 1.00 0.040 0.030 1.00 0.075 max 16.019.5 . 5 C min, .0.75 maxS40900 409DS40910 0.030 1.00 0.040 0.020 1.00 0.50 10.511.7 . Ti 6X (C+N)min,0.050 maxCb 0.17 0.030S40920 0.030 1.00 0.040 0.020 1.00 0.50 10.511.7 . Ti 8X (C+N)min
20、,Ti 0.150.50Cb 0.10 0.030S40930 0.030 1.00 0.040 0.020 1.00 0.50 10.511.7 . (Ti+Cb) 0.08+83(C+N) min,0.75 max;Ti 0.05 min0.75 max. 0.030S40930 0.030 1.00 0.040 0.020 1.00 0.50 10.511.7 . (Ti+Cb) 0.08+8 (C+N) min,0.75 max;Ti 0.05 min. 0.030S43400 434 0.120 1.00 0.040 0.030 1.00 . 16.018.0 0.751.25 .
21、. .S43600 436 0.120 1.00 0.040 0.030 1.00 . 16.018.0 0.751.25 . Cb 5 Cmin0.080 max.S43035 439 0.030 1.00 0.040 0.030 1.00 0.50 17.019.0 . Ti0.20+4(C+N)min,1.10 max;Al 0.015. 0.030S41003 E 0.030 1.50 0.040 0.030 1.00 1.50 10.512.5 . . . 0.030S44400 444 0.025 1.00 0.040 0.030 1.00 1.00 17.519.5 1.752.
22、50 (Ti+Cb)0.20+4(C+N)min0.80 max0.035S41008 410S 0.080 1.00 0.040 0.030 1.00 0.60 11.513.5 . . . .S44100 F 0.030 1.00 0.040 0.030 1.00 1.00 17.519.5 . 0.10.5 Cb 0.3+(9 C).A For small diameter or thin walls, or both, where many drawing passes are required, a carbon content of 0.040 % max is necessary
23、 in grades MT-304L and MT-316L.Small outside diameter tubes are defined as those less than 0.500 in. (12.7 mm) in outside diameter and light wall tubes as those less than 0.049 in. (1.24 mm) in averagewall thickness.B The columbium plus tantalum content shall be not less than ten times the carbon co
24、ntent and not more than 1.00 %.C The titanium content shall be not less than five times the carbon content and not more than 0.60 %.DS40900 (Type 409) has been replaced by S40910, S40920, and S40930. Unless otherwise specified in the ordering information, an order specifying S40900 or Type 409,shall
25、 be satisfied by any one of S40910, S40920, or S40930 at the option of the seller. Material meeting the requirements of S40910, S40920, or S40930 may, by agreementbetween purchaser and manufacturer, be certified as S40900.ES41003 chemical composition relates to Type 412, which is not currently an AI
26、SI or SAE number.FS44100 chemical composition relates to Type 441, which is not currently an AISI or SAE number.A554 1324.1.9 Surface finish (see Section 12),4.1.10 Report of chemical analysis, if required (Section 8),4.1.11 Individual supplementary requirements, if required,4.1.12 End use,4.1.13 Sp
27、ecification designation,4.1.14 Special requirements,4.1.15 Special marking (Section 15), and4.1.16 Special packing (Section 16).5. Process5.1 The steel may be made by any process.5.2 If a specific type of melting is required by the purchaser, it shall be stated on the purchase order.5.3 The primary
28、melting may incorporate separate degassing or refining and may be followed by secondary melting, such aselectroslag remelting or vacuum-arc remelting. If secondary melting is employed, the heat shall be defined as all of the ingotsremelted from a single primary heat.5.4 Steel may be cast in ingots o
29、r may be strand cast. When steel of different grades are sequentially strand cast, identificationof the resultant transition material is required. The producer shall remove the transition material by an established procedure thatpositively separates the grades.6. Materials and Manufacture6.1 The tub
30、es shall be made from flat-rolled steel by an automatic welding process without the addition of filler metal.7. Condition7.1 The tubes shall be furnished in any of the following conditions as specified:7.1.1 As welded,7.1.2 Welded and annealed,7.1.3 Cold reduced,7.1.4 Cold reduced and annealed.7.2 T
31、he inside diameter bead shall be furnished in any of the following conditions as specified:7.2.1 Bead not removed,7.2.2 Bead controlled to 0.005 in. (0.13 mm) or 15 % of the specified wall thickness, whichever is greater, and7.2.3 Bead removed.7.3 Square and rectangular welded stainless tubing is su
32、pplied as cold worked unless otherwise specified.8. Heat Analysis8.1 An analysis of each heat of steel shall be made by the steel manufacturer to determine the percentages of the elementsspecified. If secondary melting processes are employed, the heat analysis shall be obtained from one remelted ing
33、ot or the productof one remelted ingot of each primary melt. The chemical composition thus determined, or that determined from a product analysismade by the tubular product manufacturer, shall conform to requirements specified. When requested in the order or contract, areport of this analysis shall
34、be furnished to the purchaser. (See Test Methods, Practices, and Terminology A751.)9. Permissible Variations in DimensionsRound Tubing9.1 For all conditions except tubing with bead removed, Table 2 shall apply.9.2 For tubing with bead removed, Table 3 shall apply.9.3 LengthsTubing is normally furnis
35、hed in mill lengths 5 ft (1.5 m) and over. Definite cut lengths are furnished whenspecified, to the length tolerances shown in Table 4. For tubing ordered in multiple lengths, it is common practice to allow a definiteamount over for each multiple for the purchasers cutting operation. Thus cutting al
36、lowance should be specified in the purchaseorder.9.4 Straightness ToleranceThe straightness tolerance shall be 0.030 in. (0.76 mm) maximum in any 3-ft (0.9-m) length oftubing. The straightness tolerance on shorter lengths and on special requirements shall be agreed upon between the purchaser andprod
37、ucer.10. Permissible Variations in DimensionsSquare and Rectangular Tubing10.1 For this tubing, variations in dimensions from those specified shall not exceed the amounts prescribed in Table 5. Forlengths, see 9.3. For the measurement of corner radii in Table 5, refer to Fig. 1.A554 133TABLE 2 Diame
38、ter, Wall,A and Ovality Tolerances (All Conditions Except Tubing with Bead Removed)NOTE 1Ovality is the difference between maximum and minimum outside diameters measured at any one cross section. There is no additionaltolerance for ovality on tubes having a specified wall thickness of more than 3 %
39、of the outside diameter.NOTE 2For sizes up to and including 5-in. (127.0-mm) outside diameter, an ovality tolerance of twice the tabular outside diameter tolerance spreadshown is applied one half plus and one half minus to tubes having a specified wall thickness of 3 % or less of the specified outsi
40、de diameter. The averageof the maximum and minimum outside diameter readings should fall within the outside diameter tolerances as shown in this table.NOTE 3For sizes over 5-in. (127.0-mm) to and including 16-in. (406.4-mm) outside diameter, when the specified wall thickness is 3 % or less of theout
41、side diameter, the ovality shall not exceed 1.5 % of the specified outside diameter.OD Size, in. (mm) Wall Thickness OD, in. mm in. mmUnder 12 (12.7) 0.020 to 0.049 0.51 to 1.24 0.004 0.1012 to 1 (12.7 to 25.4) 0.020 to 0.065 0.51 to 1.65 0.005 0.1312 to 1 (12.7 to 25.4) over 0.065 to 0.134 over 1.6
42、5 to 3.40 0.010 0.25Over 1 to 1 12 (25.4 to 38.1), incl 0.025 to 0.065 0.64 to 1.65 0.008 0.20Over 1 to 1 12 (25.4 to 38.1), incl over 0.065 to 0.134 over 1.65 to 3.40 0.010 0.25Over 1 12 to 2 (38.1 to 50.8), incl 0.025 to 0.049 0.64 to 1.24 0.010 0.25Over 1 12 to 2 (38.1 to 50.8), incl over 0.049 t
43、o 0.083 over 1.24 to 2.11 0.011 0.28Over 1 12 to 2 (38.1 to 50.8), incl over 0.083 to 0.149 over 2.11 to 3.78 0.012 0.30Over 2 to 2 12 (50.8 to 63.5), incl 0.032 to 0.065 0.81 to 1.65 0.012 0.30Over 2 to 2 12 (50.8 to 63.5), incl over 0.065 to 0.109 over 1.65 to 2.77 0.013 0.33Over 2 to 2 12 (50.8 t
44、o 63.5), incl over 0.109 to 0.165 over 2.77 to 4.19 0.014 0.36Over 2 12 to 3 12 (63.5 to 88.9), incl 0.032 to 0.165 0.81 to 4.19 0.014 0.36Over 2 12 to 3 12 (63.5 to 88.9), incl over 0.165 over 4.19 0.020 0.51Over 3 12 to 5 (88.9 to 127.0), incl 0.035 to 0.165 0.89 to 4.19 0.020 0.51Over 3 12 to 5 (
45、88.9 to 127.0), incl over 0.165 over 4.19 0.025 0.64Over 5 to 7 12 (127.0 to 190.5), incl 0.049 to 0.250 1.24 to 6.35 0.025 0.64Over 5 to 7 12 (127.0 to 190.5), incl over 0.250 over 6.35 0.030 0.76Over 7 12 to 16 (190.5 to 406.4), incl all all 0.00125 in./in. or mm/mm of circumferenceA Wall toleranc
46、e 10 % of specified wall thickness.TABLE 3 Diameter, Wall,A and Ovality Tolerances for Tubing withBead RemovedNOTE 1Ovality is the difference between maximum and minimumoutside diameters measured at any one cross section. There is noadditional tolerance for ovality on tubes having a specified wall t
47、hicknessof more than 3 % of the outside diameter.NOTE 2An ovality allowance of twice the outside diameter tolerance,shown in this table, is applied one half plus and one half minus to theoutside diameter, for tubes having a specified wall thickness of 3 % or lessof the specified outside diameter. Th
48、e average of the maximum andminimum outside diameter readings should fall within the outsidediameter tolerances of this table.NOTE 3Tubing may be specified to only two of the three followingdimensionsoutside diameter, inside diameter, or wall.OD Size, in. (mm) OD, ID, in. mm in. mmUp to 332 (2.4), e
49、xcl 0.001 0.03 0.001 0.03332 to 316 (2.4 to 4.8), excl 0.0015 0.038 0.0015 0.038316 to 12 (4.8 to 12.7), excl 0.003 0.08 0.005 0.1312 to 1 (12.7 to 25.4), excl 0.004 0.10 0.006 0.151 to 112 (25.4 to 38.1),excl0.005 0.13 0.007 0.181 12 to 2 (38.1 to 50.8),excl0.006 0.15 0.008 0.202 to 2 12 (50.8 to 63.5),excl0.007 0.18 0.010 0.252 12 to 3 12 (63.5 to 88.9),excl0.010 0.25 0.014 0.363 12 to 5 (88.9 to 127.0),incl0.015 0.38 0.020 0.51Over 5 to 16 (127.0 to406.4), incl0
