ASTM A511/A511M-15a
(Specification)Standard Specification for Seamless Stainless Steel Mechanical Tubing
Standard Specification for Seamless Stainless Steel Mechanical Tubing
ABSTRACT
This specification covers seamless stainless tubing for use in mechanical applications where corrosion-resistant or high-temperature strength is needed. The steel may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The tubes shall be made by a seamless process and by either cold working or hot working as specified. Seamless steel tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel and then cold finishing the hot-worked tubing to produce the desired shape, dimensions and properties All austenitic tubes shall be furnished in the annealed condition. An analysis of each heat of steel shall be made to determine the percentages of the elements specified. If secondary melting processes are employed, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt.
SCOPE
1.1 This specification covers seamless stainless tubing for use in mechanical applications where corrosion-resistant or high-temperature strength is needed. The grades covered are listed in Table 1, Table 2, and Table 3. (A) For small diameter or thin wall tubing or both, where many drawing passes are required, a maximum of 0.040 % carbon is necessary in grades MT-304L and MT-316L. Small outside diameter tubes are defined as those under a 0.500 in. [12.7 mm] outside diameter and light-wall tubes as those under a 0.049 in. [1.2 mm] average wall thickness (0.044 in. [1.1 mm] min wall thickness).(B) Iron shall be determined arithmetically by difference of 100 minus the sum of the other specified elements.(C) The range of (Al + Ti) shall be within 0.85–1.20 %. (A) MT446-2 is a lower carbon version of MT446-1, that has a lower tensile strength but improved ductility and toughness.(B) Carbon plus nitrogen = 0.025 max %. (A) Maximum, unless a range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement and analysis for the element need not be determined or reported.(B) % Cr + 3.3 X % Mo + 16X % N ≥ 40.
1.2 This specification covers seamless cold-finished mechanical tubing and seamless hot-finished mechanical tubing in sizes up to 123/4 in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses as required.
1.3 Tubes shall be furnished in one of the following shapes, as specified by the purchaser: round, square, rectangular, or special.
1.4 Optional supplementary requirements are provided and when desired, shall be stated in the order.
1.5 The values stated in inch-pound units are to be regarded as the standard. Within the text, the SI units are shown in square brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
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Designation:A511/A511M −15a
StandardSpecification for
1
Seamless Stainless Steel Mechanical Tubing
This standard is issued under the fixed designationA511/A511M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber 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 U.S. Department of Defense.
3
1. Scope* of Chemical Composition (Withdrawn 1996)
2.2 Military Standards:
1.1 This specification covers seamless stainless tubing for
4
MIL-STD-129 Marking for Shipment and Storage
use in mechanical applications where corrosion-resistant or
MIL-STD-163SteelMillProductsPreparationforShipment
high-temperature strength is needed. The grades covered are
4
and Storage
listed in Table 1, Table 2, and Table 3.
2.3 Federal Standard:
1.2 This specification covers seamless cold-finished me-
4
Fed. Std. No. 123Marking for Shipments (CivilAgencies)
chanicaltubingandseamlesshot-finishedmechanicaltubingin
3
sizes up to 12 ⁄4 in. [325 mm] in outside nominal diameter (for
3. Ordering Information
round tubing) with wall thicknesses as required.
3.1 Orders for material under this specification should
1.3 Tubes shall be furnished in one of the following shapes,
include the following as required to describe the desired
as specified by the purchaser: round, square, rectangular, or
material adequately:
special.
3.1.1 Quantity (feet, mass, or number of pieces),
1.4 Optional supplementary requirements are provided and 3.1.2 Name of material (seamless stainless steel mechanical
tubing),
when desired, shall be stated in the order.
3.1.3 Form (round, square, rectangular, special, see Section
1.5 The values stated in inch-pound units are to be regarded
1),
as the standard. Within the text, the SI units are shown in
3.1.4 Dimensions (round, outside diameter and wall
square brackets.The values stated in each system are not exact
thickness, see Section 9; square and rectangular, outside
equivalents;therefore,eachsystemshallbeusedindependently
dimensions and wall thickness, see Section 10; other, specify),
of the other.
3.1.5 Length (specific or random, see 9.3),
3.1.6 Manufacture (cold- or hot-finished, see 4.5),
2. Referenced Documents
3.1.7 Grade (Section 6),
2
2.1 ASTM Standards:
3.1.8 Condition (annealed, as cold worked, or with special
A262Practices for Detecting Susceptibility to Intergranular
heat treatment, controlled microstructural characteristics, or
Attack in Austenitic Stainless Steels
other condition as required, see Section 5),
A370Test Methods and Definitions for Mechanical Testing
3.1.9 Surface finish (special pickling, shot blasting, or
of Steel Products
polishing, as required, see Supplementary Requirement S5),
A1016/A1016MSpecification for General Requirements for
3.1.10 Specification designation,
Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
3.1.11 Report of ChemicalAnalysis, if required (Sections 7
Steel Tubes
and 8),
E59Practice for Sampling Steel and Iron for Determination
3.1.12 Individual supplementary requirements, if required,
3.1.13 End use,
3.1.14 Packaging,
3.1.15 Special marking (see 15.2),
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
3.1.16 Special packing (see 16.2), and
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
3.1.17 Special requirements.
Current edition approved May 1, 2015. Published May 2015. Originally
approved in 1964. Last previous edition approved in 2015 as A511/A511M–15.
DOI: 10.1520/A0511_A0511M-15A.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
4
Standards volume information, refer to the standard’s Document Summary page on AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
the ASTM website. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*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 ----------------------
A511/A511M−15a
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TABLE 1 Chemical Requirements of Austenitic Stainless Steels
Composition, %
Phos- Sul-
Other
Grade
Manga- pho- fur, Silicon,
Carbon Nickel Chromium Molybdenum Titanium Columbium Selenium Iron Elements
nese, max rus, max max
max
MT 302 0.08 to 0.20 2.00 0.040 0.030 1.00 8.0–10.0 17.0–19.0 . . . . . .
MT 303 0.15 max 2.00 0.20 0.15 min 1.00 8.0–10.0 17.0–19.
...
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: A511/A511M − 15 A511/A511M − 15a
Standard Specification for
1
Seamless Stainless Steel Mechanical Tubing
This standard is issued under the fixed designation A511/A511M; 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 U.S. Department of Defense.
1. Scope*
1.1 This specification covers seamless stainless tubing for use in mechanical applications where corrosion-resistant or
high-temperature strength is needed. The grades covered are listed in Table 1, Table 2, and Table 3.
1.2 This specification covers seamless cold-finished mechanical tubing and seamless hot-finished mechanical tubing in sizes up
3
to 12 ⁄4 in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses as required.
1.3 Tubes shall be furnished in one of the following shapes, as specified by the purchaser: round, square, rectangular, or special.
1.4 Optional supplementary requirements are provided and when desired, shall be stated in the order.
1.5 The values stated in inch-pound units are to be regarded as the standard. Within the text, the SI units are shown in square
brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the
other.
2. Referenced Documents
2
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel
Tubes
3
E59 Practice for Sampling Steel and Iron for Determination of Chemical Composition (Withdrawn 1996)
2.2 Military Standards:
4
MIL-STD-129 Marking for Shipment and Storage
4
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
2.3 Federal Standard:
4
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
3. Ordering Information
3.1 Orders for material under this specification should include the following as required to describe the desired material
adequately:
3.1.1 Quantity (feet, mass, or number of pieces),
3.1.2 Name of material (seamless stainless steel mechanical tubing),
3.1.3 Form (round, square, rectangular, special, see Section 1),
3.1.4 Dimensions (round, outside diameter and wall thickness, see Section 9; square and rectangular, outside dimensions and
wall thickness, see Section 10; other, specify),
3.1.5 Length (specific or random, see 9.3),
3.1.6 Manufacture (cold- or hot-finished, see 4.5),
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 Jan. 1, 2015May 1, 2015. Published January 2015May 2015. Originally approved in 1964. Last previous edition approved in 20122015 as
A511/A511M–12.–15. DOI: 10.1520/A0511_A0511M-15.10.1520/A0511_A0511M-15A.
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
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*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 ----------------------
A511/A511M − 15a
2
TABLE 1 Chemical Requirements of Austenitic Stainless Steels
Composition, %
Phos- Sul-
Other
Grade
Manga- pho- fur, Silicon,
Carbon Nickel Chromium Molybdenum Titanium Columbium Selenium Iron Elements
nese, max rus, max max
max
MT 302 0.08 to 0.20 2.00 0.040 0.030 1.00 8.0–10.0 17.0–19.0 . . . . . .
MT 303 0.15 max 2.00 0.20 0.15 min 1.00 8.0–10.0 17.0–19.0 . . . . . .
MT 303Se 0.15 max 2.00 0.040 0.040 1.00 8.0–11.0 17.0–19.0 . . . 0.12–0.2 . .
MT 304 0.08 max 2.00 0.040 0.030 1.00 8.0–11.0 18.0–20.0 . . . . . .
A
MT 304L 0.0
...
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