ASTM A554-16
(Specification)Standard Specification for Welded Stainless Steel Mechanical Tubing
Standard Specification for Welded Stainless Steel Mechanical Tubing
ABSTRACT
This guide covers standard specification for welded stainless steel tubing for mechanical applications where appearance, mechanical properties, or corrosion resistance is needed. The tubes shall be made from flat-rolled steel by an automatic welding process without the addition of filler metal. Tubes shall be furnished in one of the following shapes - round, square, rectangular, or special. Heat analysis shall be performed wherein several grades of steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, titanium, columbium, and tantalum.
SCOPE
1.1 This specification covers welded austenitic, ferritic, and austenitic-ferritic duplex stainless steel mechanical tubing intended for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed. The grades covered are listed in Table 1. (A) Maximum, 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 of 0.040 % max is necessary 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 average wall thickness.(C) The columbium content shall be not less 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content shall be not less than five times the carbon content and not more than 0.60 %.(E) S40900 (Type 409) has been replaced by S40910, S40920, and S40930.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 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.(F) S41003 chemical composition relates to Type 412, which is not currently an AISI or SAE number.(G) S44100 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.(J) Designation established in accordance with Practice E527 and SAE J 1086.(K) Common name, not a trademark, widely used, not associated with any one producer.
1.2 This specification covers as-welded or cold-reduced mechanical tubing in sizes to 16 in. (406.4 mm) outside dimension, and in 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 and 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 mathematical conversions to SI units that are provided for information only and are not considered standard.
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Designation:A554 −16
Standard Specification for
1
Welded Stainless Steel Mechanical Tubing
This standard is issued under the fixed designation A554; 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 year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2.2 Military Standards:
3
MIL-STD-129 Marking for Shipment and Storage
1.1 This specification covers welded austenitic, ferritic, and
MIL-STD-163 Steel Mill Products Preparation for Shipment
austenitic-ferritic duplex stainless steel mechanical tubing
3
and Storage
intended for use in ornamental, structural, exhaust, and other
2.3 Federal Standard:
applications where appearance, mechanical properties, or cor-
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
rosion resistance is needed. The grades covered are listed in
2.4 SAE Standard:
Table 1.
4
SAE J 1086 Numbering Metals and Alloys
1.2 This specification covers as-welded or cold-reduced
mechanical tubing in sizes to 16 in. (406.4 mm) outside
3. Terminology
dimension, and in wall thicknesses 0.020 in. (0.51 mm) and
3.1 Definitions—For definitions of terms used in this
over.
specification, refer to Terminology A941.
1.3 Tubes shall be furnished in one of the following shapes
as specified by the purchaser: round, square, rectangular, or 4. Ordering Information
special.
4.1 Orders for material under this specification should
1.4 Supplementary requirements of an optional nature are include the following, as required, to describe the desired
provided and when desired shall be so stated in the order. material adequately:
4.1.1 Quantity (feet, mass, or number of pieces),
1.5 The values stated in inch-pound units are to be regarded
4.1.2 Name of material (welded stainless steel mechanical
as standard. The values given in parentheses are mathematical
tubing),
conversions to SI units that are provided for information only
4.1.3 Form (round, square, rectangular, special, see 1.3),
and are not considered standard.
4.1.4 Dimensions:
4.1.4.1 Round-outside diameter and wall thickness for all
2. Referenced Documents
conditions (Section 9). Alternatively, for cold-reduced
2
2.1 ASTM Standards:
condition, outside diameter and inside diameter or inside
A370 Test Methods and Definitions for Mechanical Testing
diameter and wall dimensions may be specified,
of Steel Products
4.1.4.2 Square and rectangular outside dimensions and wall
A751 Test Methods, Practices, and Terminology for Chemi-
thickness (see 10.1),
cal Analysis of Steel Products
4.1.4.3 Special (to be specified),
A790/A790M Specification for Seamless and Welded
4.1.5 Length (mill lengths, cut lengths, or multiple lengths
Ferritic/Austenitic Stainless Steel Pipe
(see 9.3)),
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
4.1.6 Grade (Table 1),
Alloys, and Ferroalloys
4.1.7 Condition (see 7.1),
E527 Practice for Numbering Metals and Alloys in the
4.1.8 Inside diameter bead condition (see 7.2),
Unified Numbering System (UNS)
4.1.9 Surface finish (see Section 12),
4.1.10 Report of chemical analysis, if required (Section 8),
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
4.1.11 Individual supplementary requirements, if required,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
4.1.12 End use,
A01.10 on Stainless and Alloy Steel Tubular Products.
4.1.13 Specification designation,
Current edition approved March 1, 2016. Published March 2016. Originally
approved in 1965. Last previous edition approved in 2015 as A554–15a. DOI:
10.1520/A0554-16.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Robbins Ave., Philadelphia, PA 19111–5094, Attn: NPODS.
4
Standards volume information, refer to the standard’s Document Summary page on Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
the ASTM website. PA 15096-0001, http://www.sae.org.
*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
1
---------------------- Page: 1 ----------------------
A554−16
2
A
TABLE 1 Chemical Requirements
Composition, %
J
UNS # Grade
Carbon Manga- Phos- Sulfur Silicon Nickel Chromium Molybdenum Titanium Columbium Nitrogen Copper Other
nese, phorus
Austenitic
MT-301 0.15 2.00 0.045 0.030 1.00 6.0–8.0 16.0–18.0 . . .
MT-302 0.15 2.00 0.045 0.030 1.00 8.0–10.0 17.0–19.0 . . .
MT-304 0.08 2.00 0.045 0.030 1.00 8.0–11.0 18.0–20.0 . . .
B
MT-304
...
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 the previous version. Because
it 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 version
of the standard as published by ASTM is to be considered the official document.
Designation: A554 − 15a A554 − 16
Standard Specification for
1
Welded Stainless Steel Mechanical Tubing
This standard is issued under the fixed designation A554; 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 year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers welded austenitic, ferritic, and austenitic-ferritic duplex stainless steel mechanical tubing intended
for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance
is needed. The grades covered 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, and
in 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 and 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 mathematical
conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A790/A790M Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2 Military Standards:
3
MIL-STD-129 Marking for Shipment and Storage
3
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
2.3 Federal Standard:
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
2.4 SAE Standard:
4
SAE J 1086 Numbering Metals and Alloys
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Terminology A941.
4. Ordering Information
4.1 Orders for material under this specification should include the following, as required, to describe the desired material
adequately:
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 1.3),
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.10
on Stainless and Alloy Steel Tubular Products.
Current edition approved Sept. 1, 2015March 1, 2016. Published September 2015March 2016. Originally approved in 1965. Last previous edition approved in 2015 as
A554–15.–15a. DOI: 10.1520/A0554-15A.10.1520/A0554-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111–5094, Attn: NPODS.
4
Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.
*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
1
---------------------- Page: 1 ----------------------
A554 − 16
2
A
TABLE 1 Chemical Requirements
Composition, %
J
UNS # Grade
Carbon Manga- Phos- Sulfur Silicon Nickel Chromium Molybdenum Titanium Columbium Nitrogen Copper Other
nese, phorus
Austenitic
MT-301 0.15 2.00 0.045 0.030 1.00 6.0–8.0 16.0–18.0 . . .
MT-302 0.15 2.00 0.045 0.030 1.00 8.0–10.0 17.0–19.0 . . .
MT-304 0.08 2.00 0.045 0.030 1.00 8.0–11.0 18.0–20.0 . . .
B
MT-304L 0.035 2.00 0.045 0.030 1.00 8.0–13.0 18.0–20.0 . . .
MT-305 0.12 2.00 0.045 0.030 1.00 10.0–13.0 17.0–19.0 . . .
MT-309S 0.08 2.00 0.045 0.030 1.00 12.0–15.0 22.0–24.0 . . . . .
C
MT-309S-Cb 0.08 2.00 0.045 0.030 1.00 12.0–15.0 22.0–24.0 . .
MT-310S 0.08 2.00 0.045 0.030 1.00 19.0–22.0 24.0–26.0 . . .
MT-316 0.08 2.00 0.045 0.030 1.00 10.0–14
...
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