ASTM A473 - 24a 不锈钢锻件标准规范

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Designation: A473 −24a
Standard Speciﬁcation for
Stainless Steel Forgings
1
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.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
2
A370 Test Methods and Deﬁnitions for Mechanical Testing
of Steel Products
A751 Test Methods and Practices for Chemical Analysis of
Steel Products
A788/A788M Speciﬁcation for Steel Forgings, General Re-
quirements
A941 Terminology Relating to Steel, Stainless Steel, Related
Alloys, and Ferroalloys
A1058 Test Methods for Mechanical Testing of Steel
Products—Metric
E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
E527 Practice for Numbering Metals and Alloys in the
Uniﬁed Numbering System (UNS)
2.2 SAE Standard:
3
SAE J1086 Numbering Metals and Alloys
3. Terminology
3.1 Deﬁnitions:
3.1.1 Condition A, n—annealed, which may include full
annealing, sub-critical annealing, solution annealing, or solu-
tion heat treatment.
3.1.2 Condition T, n—hardened and tempered.
3.1.3 Condition H, n—hardened and tempered.
3.1.4 Condition 1, 2, or 3, n—hardened and tempered.
NOTE 1—Hardened and tempered can result in different mechanical
properties subject to the selection of temperatures. Table 2 and Section 7
provide information for the different application requirements.
3.2 Deﬁnitions of Terms Speciﬁc to This Standard:
3.2.1 For deﬁnitions of terms used in this standard that are
not included in 3.1, refer to Speciﬁcation A788/A788M and
Terminology A941.
4. Ordering Information
4.1 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:
4.1.1 Quantity (weight or number of pieces);
4.1.2 Dimensions, including prints or sketches;
4.1.3 Name of material (stainless steel forgings);
4.1.4 Type or UNS designation (Table 1);
4.1.5 Condition (Table 2);
4.1.6 ASTM designation and date of issue;
4.1.7 Test for magnetic permeability, if speciﬁed by cus-
tomer purchase order when ordering Types 207 and 205; and
4.1.8 Special requirements.
4.2 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.
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 Oct. 1, 2024. Published October 2024. Originally
approved in 1962. Last previous edition approved in 2024 as A473 – 24. DOI:
10.1520/A0473-24A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at www.astm.org/contact. For Annual Book of
ASTM Standards volume information, refer to the standard’s Document Summary
page on the ASTM website.
3
Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
PA 15096, http://www.sae.org.
*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
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

TABLE 1 Chemical Requirements

UNS

Desig-

nation

Type

Number

Carbon,

Manga-

nese,

Phos-

phorus,

Sulfur,

Silicon,

Chromium,

Nickel,

Molyb-

denum, %

Nitrogen,

Other

Elements,

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 5.5–7.5 . . . 0.15–0.40

S21904 XM-11 0.04 8.0–10.0 0.060 0.030 1.00 19.0–21.5 5.5–7.5 . . . 0.15–0.40

S28200 . . . 0.15 17.0–19.0 0.045 0.030 1.00 17.0–19.0 . . . 0.75–1.25 0.40–0.60 Cu 0.75–1.25

S30200 302 0.15 2.00 0.045 0.030 1.00 17.0–19.0 8.0–10.0 . . . 0.10

S30215 302B 0.15 2.00 0.045 0.030 2.00–3.00 17.0–19.0 8.0–10.0 . . . . . .

S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.0–19.0 8.0–10.0 0.60

...

S30323 303 Se 0.15 2.00 0.20 0.06 1.00 17.0–19.0 8.0–10.0 . . . . . . Se 0.15 min

S30400 304 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 . . . 0.10

S30403 304L 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 . . . 0.10

S30500 305 0.12 2.00 0.045 0.030 1.00 17.0–19.0 10.5–13.0 . . . . . .

S30800 308 0.08 2.00 0.045 0.030 1.00 19.0–21.0 10.0–12.0 . . . . . .

S30815 . . . 0.10 0.80 0.040 0.030 1.40–2.00 20.0–22.0 10.0–12.0 . . . 0.14–0.20 Ce 0.03–0.08

S30900 309 0.20 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 . . . . . .

S30908 309S 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 . . . . . .

S31000 310 0.25 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 . . . . . .

S31008 310S 0.08 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 . . . . . .

S31254 . . . 0.020 1.00 0.030 0.010 0.80 19.5–20.5 17.5–18.5 6.0–6.5 0.18–0.25 Cu 0.50–1.00

S31400 314 0.25 2.00 0.045 0.030 1.50–3.00 23.0–26.0 19.0–22.0 . . . . . .

S31600 316 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 0.10

S31603 316L 0.030 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 0.10

S31700 317 0.08 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 3.0–4.0 0.10

S32100 321 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . . . . Ti 5×C min

S34700 347 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 . . . . . . Cb+Ta 10×C,

min

S34800 348 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 . . . . . . Cb+Ta 10×C,

min

Ta 0.10

Co 0.20

Austenitic-Ferritic Grades

S32550

. . . 0.04 1.50 0.040 0.030 1.00 24.0-27.0 4.5-6.5 2.9-3.9 0.10-0.25 Cu 1.50–2.50

S32760

. . . 0.030 1.00 0.030 0.010 1.00 24.0–26.0 6.0–8.0 3.0–4.0 0.20–0.30 Cu 0.50–1.00

W 0.50–1.00

S32950 . . . 0.03 2.00 0.035 0.010 0.60 26.0–29.0 3.5–5.2 1.00–2.50 0.15–0.35

Ferritic Grades

S40500 405 0.08 1.00 0.040 0.030 1.00 11.5–14.5 0.60 . . . . . . A1 0.10–0.30

S42900 429 0.12 1.00 0.040 0.030 1.00 14.0–16.0 0.75 . . . . . .

S43000 430 0.12 1.00 0.040 0.030 1.00 16.0–18.0 0.75 . . . . . .

S43020 430F 0.12 1.25 0.06 0.15 min 1.00 16.0–18.0 0.75 0.60

...

S43023

S44600

430F Se

446

0.12

0.20

1.25

1.50

0.06

0.040

0.06

0.030

1.00

16.0–18.0

23.0–27.0

0.75

...

0.25

Se 0.15 min

Martensitic Grades

S40300 403 0.15 1.00 0.040 0.030 0.50 11.5–13.0 . . . . . . . . . . . .

S41000 410 0.15 1.00 0.040 0.030 1.00 11.5–13.5 0.75 . . . . . . . . .

S41008 410S 0.08 1.00 0.040 0.030 1.00 11.5–13.5 0.75 . . . . . . . . .

S41400 414 0.15 1.00 0.040 0.030 1.00 11.5–13.5 1.25–2.50 . . . . . . . . .

S41425 . . . 0.05 0.50–1.00 0.020 0.005 0.50 12.0–15.0 4.0–7.0 1.50–2.00 0.06–0.12 Cu 0.30

S41500

0.05 0.5–1.0 0.030 0.030 0.60 11.5–14.0 3.5–5.5 0.40–0.80 . . .

S41600 416 0.15 1.25 0.06 0.15 min 1.00 12.0–14.0 . . . 0.60

...

S41623 416 Se 0.15 1.25 0.06 0.06 1.00 12.0–14.0 . . . . . . . . . Se 0.15 min

S42000 420 Over 0.15 1.00 0.040 0.030 1.00 12.0–14.0 . . . . . . . . . . . .

S43100 431 0.20 1.00 0.040 0.030 1.00 15.0–17.0 1.25–2.50 . . . . . . . . .

S44002 440A 0.60–0.75 1.00 0.040 0.030 1.00 16.0–18.0 . . . 0.75 . . .

S44003 440B 0.75–0.95 1.00 0.040 0.030 1.00 16.0–18.0 . . . 0.75 . . .

S44004 440C 0.95–1.20 1.00 0.040 0.030 1.00 16.0–18.0 . . . 0.75 . . .

Maximum, unless range or minimum is indicated.

New designation established in accordance with Practice E527 and SAE J1086.

At manufacturer’s option; reported only when intentionally added.

Columbium (Cb) and Niobium (Nb) are alternate names for element 41 in the Periodic Table of the Elements.

% Cr + 3.3 × % Mo + 16 × % N $40.

Wrought version of CA6NM.

A473 − 24a

NOTE 2—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.

5. General Requirements

5.1 Material supplied to this speciﬁcation shall conform to

the requirements of Speciﬁcation A788/A788M, which out-

lines additional ordering information, manufacturing

requirements, testing and retesting methods and procedures,

marking, certiﬁcation, product analysis variations, and addi-

tional supplementary requirements.

5.2 If the requirements of this speciﬁcation are in conﬂict

with the requirements of Speciﬁcation A788/A788M, the

requirements of this speciﬁcation shall prevail.

6. Manufacture

6.1 Material for forgings shall consist of ingots or blooms,

billets, slabs, or bars, either forged or rolled from an ingot, and

cut to the required length by a suitable process.

TABLE 2 Mechanical Property Requirements

Type Condition Yield Strength, min,

ksi (MPa)

Tensile Strength, min,

ksi (MPa)

Elongation

in 2 in.

(50 mm) or

4D, min %

Reduction

of Area,

min, %

Brinell

Hardness

Number,

max

Austenitic Grades

201, 302, 302B, 303, 303SE, 305, 308, 309,

309S, 310, 310S, 314, 317, 321, 347, 348

A 30 (205) 75 (515) 40 50 . . .

202 A 45 (310) 90 (620) 40 50 . . .

205 A 50 (345) 90 (620) 40 50 . . .

304 and 316, Sections 5 in. (127 mm) and

Under

A 30 (205) 75 (515) 40 50 . . .

304 and 316, Sections Over 5 in. (127 mm) A 30 (205) 70 (485) 40 50 . . .

304L and 316L A 25 (170) 65 (450) 40 50 . . .

XM-10 and XM-11 A 50 (345) 90 (620) 45 60 . . .

S28200 A 60 (415) 110 (760) 40 55 . . .

S30815 A 45 (310) 87 (600) 40 50 . . .

S31254 A 44 (300) 95 (650) 35 50 . . .

Austenitic-Ferritic Grades

S32550 A 80 (550) 109 (750) 25.0 . . . 290

S32950 A 70 (480) 100 (690) 15 . . . 293

S32760 A 80 (550) 109 (750) 25 . . . 290

Ferritic Grades

430F, 430FSE, 446 A 40 (275) 70 (485) 20 45 223

405 A 30 (205) 60 (415) 20 45 207

429 A 35 (240) 65 450) 23 45 207

430 A 35 (240) 70 (485) 20 45 217

Martensitic Grades

403, 410, 416, 416SE A 40 (275) 70 (485) 20 45 223

403, 410 1 40 (275) 70 (485) 20 45 223

2 85 (585) 110 (760) 15 45 269

3 100 (690) 130 (895) 12 35 331

410S A 35 (240) 65 (450) 22 45 217

414 A . . . . . . . . . . . . . . . . . . 298

T 90 (620) 115 (795) 15 45 321

H 100 (690) 125 (860) 15 45 321

S41425 T 95 (655) 120 (825) 15 45 321

S41500 normalized and

tempered

90 (620) 115 (795) 15 45 295

420 A . . . . . . . . . . . . . . . . . . 223

431 A . . . . . . . . . . . . . . . . . . 277

T 90 (620) 115 (795) 15 . . . 321

H 135 (930) 175 (1210) 13 . . . 440

440A, 440B, 440C A . . . . . . . . . . . . . . . . . . 269

Yield strength shall be determined by the 0.2 % offset method in accordance with Test Methods and Deﬁnitions A370. An alternative method of determining yield strength

may be used based on a total extension under load of 0.5 %.

Type 431 forgings of designation A, when speciﬁed, shall be capable of meeting the above mechanical property requirements of designation Tafter oil quenching from

1800 °F to 1900 °F (980 °C to 1038 °C) and tempering at not less than 1100 °F (595 °C), or designation Hwhen oil quenched from 1850 °F to 1950 °F (1010 °C to 1065 °C)

and tempered at not more than 700 °F (370 °C).

A473 − 24a

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