ASTM A511/A511M-16

Standard Specification for Seamless Stainless Steel Mechanical Tubing and Hollow Bar

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 or as hollow bar for use in the production of hollow components such as, but not limited to nozzles, reducers, and couplings by machining 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 %.(D) The terms Niobium (Nb) and Columbium (Cb) are alternate names for the same element.  (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 hollow bar and seamless hot-finished mechanical tubing and hollow bar in sizes up to 123/4 in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses or inside diameters as required.  
1.3 Tubes for mechanical applications shall be furnished in one of the following shapes, as specified by the purchaser: round, square, rectangular, or special. Tubes to be used as hollow bar shall be furnished in round shape.  
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.

General Information

• Status: Historical
• Publication Date: 30-Apr-2016
• ICS: 23.040.10 - Iron and steel pipes
• ICS: 23.040.40 - Metal fittings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.10 - Stainless and Alloy Steel Tubular Products

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A511/A511M −16
Standard Specification for
Seamless Stainless Steel Mechanical Tubing and Hollow
1
Bar
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.
1. Scope* Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
Steel Tubes
1.1 This specification covers seamless stainless tubing for
A1058 Test Methods for Mechanical Testing of Steel
use in mechanical applications or as hollow bar for use in the
Products—Metric
production of hollow components such as, but not limited to
E112Test Methods for Determining Average Grain Size
nozzles, reducers, and couplings by machining where
2.2 Military Standards:
corrosion-resistantorhigh-temperaturestrengthisneeded.The
3
MIL-STD-129 Marking for Shipment and Storage
grades covered are listed in Table 1, Table 2, and Table 3.
MIL-STD-163SteelMillProductsPreparationforShipment
1.2 This specification covers seamless cold-finished me- 3
and Storage
chanical tubing and hollow bar and seamless hot-finished
2.3 Federal Standard:
3
mechanical tubing and hollow bar in sizes up to 12 ⁄4 in. [325 3
Fed. Std. No. 123Marking for Shipments (CivilAgencies)
mm] in outside nominal diameter (for round tubing) with wall
thicknesses or inside diameters as required.
3. Terminology
1.3 Tubes for mechanical applications shall be furnished in 3.1 Definitions:
one of the following shapes, as specified by the purchaser:
3.1.1 hollow bar—round tubing that is intended to produce
round, square, rectangular, or special. Tubes to be used as engineering components by machining, generally specified by
hollow bar shall be furnished in round shape.
minimum outside diameter and maximum inside diameter.
3.1.2 mechanical tubing—tubing of various shapes used for
1.4 Optional supplementary requirements are provided and
when desired, shall be stated in the order. mechanical and general engineering purposes, specified by
nominal outside dimension and nominal wall.
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
4. Ordering Information
square brackets.The values stated in each system are not exact
4.1 Orders for material under this specification should
equivalents;therefore,eachsystemshallbeusedindependently
include the following as required to describe the desired
of the other.
material adequately:
4.1.1 Quantity (feet, mass, or number of pieces),
2. Referenced Documents
4.1.2 Name of material (seamless stainless steel mechanical
2
2.1 ASTM Standards:
tubing or hollow bar),
A262Practices for Detecting Susceptibility to Intergranular
4.1.3 Mechanical Tubing Form only (round, square,
Attack in Austenitic Stainless Steels
rectangular, special, see Section 1),
A1016/A1016MSpecification for General Requirements for
4.1.4 Dimensions (round, nominal outside diameter and
nominal wall thickness, (see 11.1 and 11.2) or minimum
outside diameter and maximum inside diameter (see 11.3);
1 square and rectangular, nominal outside dimensions and nomi-
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
nal wall thickness, see Section 12; other, specify),
A01.10 on Stainless and Alloy Steel Tubular Products.
4.1.5 Length (specific or random, see 11.4),
Current edition approved May 1, 2016. Published May 2016. Originally
4.1.6 Manufacture (cold- or hot-finished, see 6.5),
approved in 1964. Last previous edition approved in 2015 as A511/A511M–15a.
4.1.7 Grade (Section 8),
DOI: 10.1520/A0511_A0511M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
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−16
2
TABLE 1 Chemical Requirements of Austenitic Stainless Steels
Composition, %
Phos- Sul-
Other
Grade
Manga- pho- fur, Silicon,
D
Carbon Nickel Chromium Molybdenum Titanium Niobium 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
...

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 − 15a A511/A511M − 16
Standard Specification for
Seamless Stainless Steel Mechanical Tubing and Hollow
1
Bar
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 or as hollow bar for use in the
production of hollow components such as, but not limited to nozzles, reducers, and couplings by machining 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 hollow bar and seamless hot-finished mechanical
3
tubing and hollow bar in sizes up to 12 ⁄4 in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses or
inside diameters as required.
1.3 Tubes for mechanical applications shall be furnished in one of the following shapes, as specified by the purchaser: round,
square, rectangular, or special. Tubes to be used as hollow bar shall be furnished in round shape.
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
E59A1058 Practice for Sampling Steel and Iron for Determination of Chemical CompositionTest Methods for Mechanical
Testing of Steel Products—Metric (Withdrawn 1996)
E112 Test Methods for Determining Average Grain Size
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)
3. Terminology
3.1 Definitions:
3.1.1 hollow bar—round tubing that is intended to produce engineering components by machining, generally specified by
minimum outside diameter and maximum inside diameter.
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 May 1, 2015May 1, 2016. Published May 2015May 2016. Originally approved in 1964. Last previous edition approved in 2015 as
A511/A511MA511/A511M – 15a.–15. DOI: 10.1520/A0511_A0511M-15A.10.1520/A0511_A0511M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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.
*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 − 16
2
TABLE 1 Chemical Requirements of Austenitic Stainless Steels
Composition, %
Phos- Sul-
Other
Grade
Manga- pho- fur, Silicon, Columbium
Carbon Nickel Chromium Molybdenum Titanium Selenium Iron Elements
D
nese, max rus, max max Niobium
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 0.035 max 2.00 0.040 0.030 1.00 8.0–13.0 18.0–20.0 . . . . .
...