ASTM A554-08a

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Designation: A554 – 08a
Standard Specification for
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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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* MIL-STD-163 Steel Mill Products Preparation for Ship-
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ment and Storage
1.1 This specification covers welded stainless steel tubing
2.3 Federal Standard:
for mechanical applications where appearance, mechanical
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Fed. Std. No. 123 Marking for Shipments (CivilAgencies)
properties, or corrosion resistance is needed. The grades
covered are listed in Table 1.
3. Terminology
1.2 This specification covers as-welded or cold-reduced
3.1 Definitions—For definitions of terms used in this speci-
mechanical tubing in sizes to 16 in. (406.4 mm) outside
fication, refer to Terminology A941.
dimension, and in wall thicknesses 0.020 in. (0.51 mm) and
over.
4. Ordering Information
1.3 Tubes shall be furnished in one of the following shapes
4.1 Orders for material under this specification should
as specified by the purchaser: round, square, rectangular, or
include the following, as required, to describe the desired
special.
material adequately:
1.4 Supplementary requirements of an optional nature are
4.1.1 Quantity (feet, mass, or number of pieces),
provided and when desired shall be so stated in the order.
4.1.2 Name of material (welded stainless steel mechanical
1.5 The values stated in inch-pound units are to be regarded
tubing),
as standard. The values given in parentheses are mathematical
4.1.3 Form (round, square, rectangular, special, see 1.3),
conversions to SI units that are provided for information only
4.1.4 Dimensions:
and are not considered standard.
4.1.4.1 Round-outside diameter and wall thickness for all
conditions (Section 9). Alternatively, for cold-reduced condi-
2. Referenced Documents
2 tion, outside diameter and inside diameter or inside diameter
2.1 ASTM Standards:
and wall dimensions may be specified,
A370 Test Methods and Definitions for Mechanical Testing
4.1.4.2 Square and rectangular outside dimensions and wall
of Steel Products
thickness (see 10.1),
A751 Test Methods, Practices, andTerminology for Chemi-
4.1.4.3 Special (to be specified),
cal Analysis of Steel Products
4.1.5 Length (mill lengths, cut lengths, or multiple lengths
A941 Terminology Relating to Steel, Stainless Steel, Re-
(see 9.3)),
lated Alloys, and Ferroalloys
4.1.6 Grade (Table 1),
2.2 Military Standards:
3 4.1.7 Condition (see 7.1),
MIL-STD-129 Marking for Shipment and Storage
4.1.8 Inside diameter bead condition (see 7.2),
4.1.9 Surface finish (see Section 12),
4.1.10 Report of chemical analysis, if required (Section 8),
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4.1.11 Individual supplementary requirements, if required,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
4.1.12 End use,
Current edition approved Oct. 1, 2008. Published October 2008. Originally
4.1.13 Specification designation,
approved in 1965. Last previous edition approved in 2008 as A554 – 08. DOI:
4.1.14 Special requirements,
10.1520/A0554-08A.
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4.1.15 Special marking (Section 15), and
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
4.1.16 Special packing (Section 16).
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
5. Process
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AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
Robbins Ave., Philadelphia, PA 19111–5094, Attn: NPODS. 5.1 The steel may be made by any process.
*A Summary of Changes section appears at the end of this standard.
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A554 – 08a
TABLE 1 Chemical Requirements
Composition, %
Carbon, Manga- Phos- Sulfur, Silicon, Nickel Chromium Molybdenum Titanium Columbium
Grade
max nese, phorus, max max + Tantalum
max max
Austenitic
MT-301 0.15 2.00 0.040 0.030 1.00 6.0–8.0 16.0–18.0 . . .
MT-302 0.15 2.00 0.040 0.030 1.00 8.0–10.0 17.0–19.0 . . .
MT-304 0.08 2.00 0.040 0.030 1.00 8.0–11.0 18.0–20.0 . . .
A
MT-304L 0.035 2.00 0.040 0.030 1.00 8.0–13.0 18.0–20.0 . . .
MT-305 0.12 2.00 0.040 0.030 1.00 10.0–13.0 17.0–19.0 . . .
MT-309S 0.08 2.00 0.040 0.030 1.00 12.0–15.0 22.0–24.0 . .
...