1、Designation: A554 14A554 15Standard 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.1. Scope*1.1 This specification covers welded austenitic and ferritic stainless steel mechanical tubing intended for use in ornamental,structural, ex
3、haust, 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 in sizes to 16 in. (406.4 mm) outside dimension, andin wall thicknesses 0.020 in
4、. (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 and when desired shall be so stated in the order.1.5 The values stated in inch-poun
5、d 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 Standards:2A370 Test Methods and Definitions for Mechanical Testing of Steel Products
6、A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsA790/A790M Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel PipeA941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and FerroalloysE527 Practice for Numbering Metals and All
7、oys in the Unified Numbering System (UNS)2.2 Military Standards:MIL-STD-129 Marking for Shipment and Storage3MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage32.3 Federal Standard:Fed. Std. No. 123 Marking for Shipments (Civil Agencies)32.4 SAE Standard:SAE J 1086 Numbering Metals
8、 and Alloys43. Terminology3.1 DefinitionsFor definitions of terms used in this specification, refer to Terminology A941.4. Ordering Information4.1 Orders for material under this specification should include the following, as required, to describe the desired materialadequately:4.1.1 Quantity (feet,
9、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 1.3),1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of S
10、ubcommittee A01.10on Stainless and Alloy Steel Tubular Products.Current edition approved July 1, 2014Jan. 1, 2015. Published July 2014January 2015. Originally approved in 1965. Last previous edition approved in 20132014 asA55413.14. DOI: 10.1520/A0554-14.10.1520/A0554-15.2 For referencedASTM standar
11、ds, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume 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
12、., Philadelphia, PA 191115094, Attn: NPODS.4 Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to t
13、he 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 by ASTM is to be considered the official document.*A Summary
14、 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 States1TABLE 1 Chemical RequirementsUNS # GradeComposition, %Carbon,maxManga-nese,maxPhos-phorus,maxSulfur,maxSilicon,maxNickel Chromium M
15、olybdenum Titanium Columbium+ TantalumNitrogenAusteniticMT-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
16、.045 0.030 1.00 10.013.0 17.019.0 . . .MT-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 2.0
17、0 0.045 0.030 1.00 10.015.0 16.018.0 2.03.0 . .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.
18、00 0.040 0.030 1.00 0.50 max 14.016.0 . . .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
19、.020 1.00 0.50 10.511.7 . Ti 8X (C+N)min,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+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 . . .S43600 436 0.120 1.00 0.040 0.030 1.00 . 16.018.0 0.751.25 . Cb 5 Cm
20、in0.080 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 1.752.50 (Ti+Cb)0.20+4(C+N)min0.80 max0.035S41008 410S 0.080 1.00 0.040 0.030
21、 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) min,0.9 max.A554152TABLE 1 Chemical RequirementsAUNS #J GradeComposition, %Carbon Manga-nese,Phos-phorusSulfur Silicon Nickel Chromium Molybdenum Titanium Columbium Nitrogen Copper OtherAusteniticMT-3
22、01 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 0.035B 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 . . .MT-309S 0.08 2.00 0.0
23、45 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 . . CMT-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 0.035B 2.00 0.045 0.030 1.00 10.015.0 16.018.0 2.03.0 . .MT-317 0.08 2
24、.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 . D .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 . . CFerriticMT-429 0.12 1.00 0.040 0.030 1.00 0.50 max 14.016.0 . . .MT-430 0.12 1.00
25、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 409ES40910 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,Ti 0.150.50Cb 0.10
26、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 . . .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 17.0
27、19.0 . Ti0.20+4(C+N)min,1.10 max;Al 0.015. 0.030S41003 F 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 1.752.50 (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 G 0.030 1.00 0.040 0.030 1
28、.00 1.00 17.519.5 . 0.10.5 Cb 0.3+(9 C) min,0.9 max.Austenitic-FerriticS31803 0.030 2.00 0.030 0.020 1.00 4.56.5 21.023.0 2.53.5 . . 0.080.20 . .S32003 0.030 2.00 0.030 0.020 1.00 3.04.0 19.522.5 1.502.00 . . 0.140.20 . .S32101 0.040 4.06.0 0.040 0.030 1.00 1.351.70 21.022.0 0.100.80 . . 0.200.25 0.
29、100.80 .S32202 0.030 2.00 0.040 0.010 1.00 1.002.80 21.524.0 0.45 max . . 0.180.26 . .S32205 2205K 0.030 2.00 0.030 0.020 1.00 4.56.5 22.023.0 3.03.5 . . 0.140.20 . .A554153TABLE 1 ContinuedUNS #J GradeComposition, %Carbon Manga-nese,Phos-phorusSulfur Silicon Nickel Chromium Molybdenum Titanium Colu
30、mbium Nitrogen Copper OtherS32304 2304K 0.030 2.50 0.040 0.040 1.00 3.05.5 21.524.5 0.050.60 . . 0.050.20 0.050.60 .S32550 255K 0.04 1.50 0.040 0.030 1.00 4.56.5 24.027.0 2.93.9 . . 0.100.25 1.502.50 .S32750H 2507K 0.030 1.20 0.035 0.020 0.80 6.08.0 24.026.0 3.05.0 . . 0.240.32 0.5 .S32760I 0.030 1.
31、00 0.030 0.010 1.00 6.08.0 24.026.0 3.04.0 . . 0.200.30 0.501.00 W0.501.00S81921 0.030 2.004.00 0.040 0.030 1.00 2.004.00 19.022.0 1.002.00 . . 0.140.20 . .S82011 0.030 2.03.0 0.040 0.020 1.00 1.002.00 20.523.5 0.101.00 . . 0.150.27 0.50 .S82441 0.030 2.54.0 0.035 0.005 0.70 3.04.5 23.025.0 1.002.00
32、 . . 0.200.30 0.100.80 .AMaximum, unless a range or minimum is indicated. Where ellipses (.) appear in this table, there is no minimum and analysis for the element need not be determined or reported.B For small diameter or thin walls, or both, where many drawing passes are required, a carbon content
33、 of 0.040 % max is necessary in grades MT-304L and MT-316L. Small outside diameter tubes are defined as thoseless 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 average wall thickness.C The columbium plus tantalum content shall be not less
34、 than ten times the carbon content and not more than 1.00 %.D The titanium content shall be not less than five times the carbon content and not more than 0.60 %.ES40900 (Type 409) has been replaced by S40910, S40920, and S40930. Unless otherwise specified in the ordering information, an order specif
35、ying S40900 or Type 409, shall 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 agreement between purchaser and manufacturer, be certified as S40900.FS41003 chemical composition relates to Type 412
36、, which is not currently an AISI or SAE number.GS44100 chemical composition relates to Type 441, which is not currently an AISI or SAE number.H% Cr + 3.3 %Mo + 16 %N = 41 min.I% Cr + 3.3 %Mo + 16 %N = 40 min.JDesignation established in accordance with Practice E527 and SAE J 1086.KCommon name, not a
37、 trademark, widely used, not associated with any one producer.A5541544.1.4 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 specifi
38、ed,4.1.4.2 Square and rectangular outside dimensions and wall thickness (see 10.1),4.1.4.3 Special (to be specified),4.1.5 Length (mill lengths, cut lengths, 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),4.1.9 Surface fin
39、ish (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 Specification designation,4.1.14 Special requirements,4.1.15 Special marking (Section 15), and4.1.16 Special packing (Section 16).5. Proces
40、s5.1 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 melting may incorporate separate degassing or refining and may be followed by secondary melting, such aselectroslag remelting or vacuum-a
41、rc 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 or may be strand cast. When steel of different grades are sequentially strand cast, identificationof the resultant transition material is
42、required. The producer shall remove the transition material by an established procedure thatpositively separates the grades.6. Materials and Manufacture6.1 The tubes shall be made from flat-rolled steel by an automatic welding process without the addition of filler metal.7. Condition7.1 The tubes sh
43、all 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 The 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 t
44、o 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 supplied as cold worked unless otherwise specified.8. Heat Analysis8.1 An analysis of each heat of steel shall be made by the steel manufac
45、turer to determine the percentages of the elementsspecified. If secondary melting processes are employed, the heat analysis shall be obtained from one remelted ingot or the productof one remelted ingot of each primary melt. The chemical composition thus determined, or that determined from a product
46、analysismade by the tubular product manufacturer, shall conform to requirements specified. When requested in the order or contract, areport of this analysis shall be furnished to the purchaser. (See Test Methods, Practices, and Terminology A751.)9. Permissible Variations in DimensionsRound Tubing9.1
47、 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 furnished in mill lengths 5 ft (1.5 m) and over. Definite cut lengths are furnished whenspecified, to the length tolerances shown in Table 4. F
48、or tubing ordered in multiple lengths, it is common practice to allow a definiteamount over for each multiple for the purchasers cutting operation. Thus cutting allowance should be specified in the purchaseorder.A554 155TABLE 2 Diameter, Wall,A and Ovality Tolerances (All Conditions Except Tubing wi
49、th 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 % 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 t
