ASTM A473-01

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Designation: A 473 – 01
Standard Specification for
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Stainless Steel Forgings
This standard is issued under the fixed designation A 473; 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 (e) 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 3.1.7 Test for magnetic permeability if specified by cus-
tomer purchase order when ordering Types 207 and 205.
1.1 This specification covers austenitic, austenitic-ferritic,
3.1.8 Special requirements.
ferritic, and martensitic stainless steel forgings for general use,
3.2 If possible the intended end use of the item should be
and for low- or high-temperature service.
givenonthepurchaseorderespeciallywhentheitemisordered
1.2 The values stated in inch-pound units are to be regarded
for a specific end use or uses.
as the standard.
NOTE 1—A typical ordering description is as follows: 5 stainless steel
2. Referenced Documents
forgings, Type 410, Designation A, ASTM Specification A 473 dated
2.1 ASTM Standards: ———. End use: pump blocks for oil well equipment.
A 314 Specification for Stainless Steel Billets and Bars for
4. General Requirements
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Forging
4.1 In addition to the requirements of this specification, all
A 370 Test Methods and Definitions for MechanicalTesting
3
requirements of the current edition of Specification A 484/
of Steel Products
A 484M shall apply. Failure to comply with the general
A 484/A 484M Specification for General Requirements for
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requirements of Specification A 484/A 484M constitutes non-
Stainless Steel Bars, Billets, and Forgings
conformance with this specification.
A 751 Test Methods, Practices, and Terminology for
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Chemical Analysis of Steel Products
5. Manufacture
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E 527 Practice for Numbering Metals and Alloys (UNS)
5.1 Material for forgings shall consist of ingots or blooms,
3. Ordering Information
billets, slabs, or bars, either forged or rolled from an ingot, and
cut to the required length by a suitable process. This material,
3.1 It is the responsibility of the purchaser to specify all
except for ingots, may be specified to Specification A 314.
requirements that are necessary for material ordered under this
5.2 The material shall be forged by hammering, pressing,
specification. Such requirements may include, but are not
rolling, extruding, or upsetting. It shall be brought as nearly as
limited to, the following:
possible to the finished shape and size by hot-working; and
3.1.1 Quantity (weight or number of pieces),
shall be processed, if practicable, so as to cause metal-flow
3.1.2 Dimensions, including prints or sketches,
during the hot-working operation in the direction most favor-
3.1.3 Name of material (stainless steel forgings),
able for resisting the stresses encountered in service as may be
3.1.4 Type or UNS designation (Table 1),
indicated to the manufacturer by the purchaser.
3.1.5 Condition (Table 2), and
5.3 When specified on the order, a sample forging may be
3.1.6 ASTM designation and date of issue.
sectioned and etched to show flow lines and the condition as
regards internal imperfections. When so specified, the question
of acceptable and unacceptable metal-flow shall be subject to
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
agreement between the manufacturer and the purchaser prior to
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
order entry.
A01.17 on Flat Stainless Steel Products.
Current edition approved Mar. 10, 2001. Published April 2001. Originally
5.4 When specified on the order, the manufacturer shall
published as A 473 – 62 T. Last previous edition A 473 – 99.
submit for approval of the purchaser a sketch showing the
2
Annual Book of ASTM Standards, Vol 01.05.
3 shape of the rough forging before machining, or before heat
Annual Book of ASTM Standards, Vol 01.03.
4
Annual Book of ASTM Standards, Vol 01.01. treating for mechanical properties.
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A 473–01
A
TABLE 1 Chemical Requirements
Phos-
UNS Type Manga- Other
Carbon, pho- Sulfur, Silicon, Chromium, Nickel, Molyb- Nitro-
Desig- Num- nese, Elements,
% 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
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
S21900 XM-10 0.08 8.0–10.0 0.060 0.030 1.00 19.0–21.5 5.5–7.
...