ASTM A473-16
(Specification)Standard Specification for Stainless Steel Forgings
Standard Specification for Stainless Steel Forgings
ABSTRACT
This specification covers austenitic, austenitic-ferritic, ferritic, and martensitic stainless steel forgings for general use, and for low- or high-temperature service. The different solution heat treatment and annealing treatment received by the steel material are presented in details. The steel shall conform to the specified chemical composition and room temperature mechanical requirements. The forgings shall be produced with prolongations for testing, unless otherwise specified. The number of and procedure for tension test for forgings depending on their weight are presented. The tension test specimens shall be taken from the test prolongations or from the forgings.
SCOPE
1.1 This specification covers austenitic, austenitic-ferritic, ferritic, and martensitic stainless steel forgings for general use, and for low- or high-temperature service.
1.2 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.
1.3 Supplementary requirements from Specification A788/A788M may be specified when additional testing, inspection, or processing is required.
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Designation:A473 −16
Standard Specification for
1
Stainless Steel Forgings
This standard is issued under the fixed designation A473; 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* specification. Such requirements may include, but are not
limited to, the following:
1.1 This specification covers austenitic, austenitic-ferritic,
3.1.1 Quantity (weight or number of pieces),
ferritic, and martensitic stainless steel forgings for general use,
3.1.2 Dimensions, including prints or sketches,
and for low- or high-temperature service.
3.1.3 Name of material (stainless steel forgings),
1.2 The values stated in inch-pound units are to be regarded
3.1.4 Type or UNS designation (Table 1),
as standard. The values given in parentheses are mathematical
3.1.5 Condition (Table 2), and
conversions to SI units that are provided for information only
3.1.6 ASTM designation and date of issue.
and are not considered standard.
3.1.7 Test for magnetic permeability if specified by cus-
tomer purchase order when ordering Types 207 and 205.
1.3 Supplementary requirements from Specification A788/
A788M may be specified when additional testing, inspection, 3.1.8 Special requirements.
or processing is required.
3.2 If possible the intended end use of the item should be
givenonthepurchaseorderespeciallywhentheitemisordered
2. Referenced Documents
for a specific end use or uses.
2
2.1 ASTM Standards:
NOTE 1—A typical ordering description is as follows: 5 stainless steel
A370 Test Methods and Definitions for Mechanical Testing
forgings, Type 410, Designation A, ASTM Specification A473 dated
of Steel Products
______. End use: pump blocks for oil well equipment.
A751 Test Methods, Practices, and Terminology for Chemi-
4. General Requirements
cal Analysis of Steel Products
A788/A788M Specification for Steel Forgings, General Re-
4.1 Material supplied to this specification shall conform to
quirements
the requirements of Specification A788/A788M, which out-
A1058 Test Methods for Mechanical Testing of Steel
lines additional ordering information, manufacturing
Products—Metric
requirements, testing and retesting methods and procedures,
E8/E8M Test Methods for Tension Testing of Metallic Ma-
marking, certification, product analysis variations, and addi-
terials
tional supplementary requirements.
E527 Practice for Numbering Metals and Alloys in the
4.2 If the requirements of this specification are in conflict
Unified Numbering System (UNS)
with the requirements of Specification A788/A788M, the
requirements of this specification shall prevail.
3. Ordering Information
5. Manufacture
3.1 It is the responsibility of the purchaser to specify all
requirements that are necessary for material ordered under this
5.1 Material for forgings shall consist of ingots or blooms,
billets, slabs, or bars, either forged or rolled from an ingot, and
1 cut to the required length by a suitable process.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.2 The material shall be forged by hammering, pressing,
A01.06 on Steel Forgings and Billets.
rolling, extruding, or upsetting. It shall be brought as nearly as
Current edition approved May 1, 2016. Published May 2016. Originally
possible to the finished shape and size by hot-working; and
approved in 1962. Last previous edition approved in 2015 as A473 – 15. DOI:
10.1520/A0473-16.
shall be processed, if practicable, so as to cause metal-flow
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
during the hot-working operation in the direction most favor-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
able for resisting the stresses encountered in service as may be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. indicated to the manufacturer by the purchaser.
*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 ----------------------
A473−16
A
TABLE 1 Chemical Requirements
UNS Manga- Phos- Other
Type Carbon, Sulfur, Silicon, Chromium, Nickel, Molyb- Nitrogen,
Desig- nese, phorus, Elements,
Number % % % % % denum, % %
B
nation % % %
Austenitic Grades
S20100 201 0.15 5.5–7.5 0.060 0.030 1.00 16.0–18.0 3.5–5.5 . . . 0.25
S20200 202 0.15 7.5–10.0 0.060 0.030 1.00 17.0–19.0 4.0–
...
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: A473 − 15 A473 − 16
Standard Specification for
1
Stainless Steel Forgings
This standard is issued under the fixed designation A473; 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 austenitic, austenitic-ferritic, ferritic, and martensitic stainless steel forgings for general use, and
for low- or high-temperature service.
1.2 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.
1.3 Supplementary requirements from Specification A788/A788M may be specified when additional testing, inspection, or
processing is required.
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
A788/A788M Specification for Steel Forgings, General Requirements
A1058 Test Methods for Mechanical Testing of Steel Products—Metric
E8/E8M Test Methods for Tension Testing of Metallic Materials
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Ordering Information
3.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification. Such requirements may include, but are not limited to, the following:
3.1.1 Quantity (weight or number of pieces),
3.1.2 Dimensions, including prints or sketches,
3.1.3 Name of material (stainless steel forgings),
3.1.4 Type or UNS designation (Table 1),
3.1.5 Condition (Table 2), and
3.1.6 ASTM designation and date of issue.
3.1.7 Test for magnetic permeability if specified by customer purchase order when ordering Types 207 and 205.
3.1.8 Special requirements.
3.2 If possible the intended end use of the item should be given on the purchase order especially when the item is ordered for
a specific end use or uses.
NOTE 1—A typical ordering description is as follows: 5 stainless steel forgings, Type 410, Designation A, ASTM Specification A473 dated ______.
End use: pump blocks for oil well equipment.
4. General Requirements
4.1 Material supplied to this specification shall conform to the requirements of Specification A788/A788M, which outlines
additional ordering information, manufacturing requirements, testing and retesting methods and procedures, marking, certification,
product analysis variations, and additional supplementary requirements.
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 A01.06
on Steel Forgings and Billets.
Current edition approved May 1, 2015May 1, 2016. Published June 2015May 2016. Originally approved in 1962. Last previous edition approved in 20132015 as
A473 – 13.A473 – 15. DOI: 10.1520/A0473-15.10.1520/A0473-16.
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.
*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 ----------------------
A473 − 16
A
TABLE 1 Chemical Requirements
Type Phos-
UNS Manga- Other
Num- Carbon, pho-phorus, Sulfur, Silicon, Chromium, Nickel, Molyb- Nitro-Nitrogen,
Desig- nese, Elements,
Number % rus, % % % % denum, % gen, %
B
nation % %
ber %
Austenitic Grades
S20100 201 0.15 5.5–7.5 0.060 0.030 1.00 16.0–18.0 3.5–5.5 . . . 0.25
S20100 201 0.15 5.5–7.5 0.060 0.030 1.00 16.0–18.0 3.5–5.5 . . . 0.25
S20200 202 0.15 7.5–10.0 0.060 0.030 1.00 17.0–19.0 4.0–6.0 . . . 0.25
S20200 202 0.15 7.5–10.0 0.060 0.030 1.00 17.0–19.0 4.0–6.0 . . . 0.25
S20500 205 0.12–0.25 14.0–15.5 0.060 0.030 1.00 16.5–18.0 1.00–1.75 . . . 0.32–0.40
S20500 205 0.12–0.25 14.0–15.5 0.060 0.030 1.00 16.5–18.0 1.00–1.75 . . . 0.32–0.40
S21900 XM-10 0.08 8.0–10.0 0.060 0.030 1.00 19.0–21.5 5.5–7.5 . . . 0.15–0.40
S219
...
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