ASTM A564 - A 564M - 25 热轧和冷精整时效硬化不锈钢棒材和型材的标准规范

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Designation: A564/A564M −25
Standard Speciﬁcation for
Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel
Bars and Shapes
1
This standard is issued under the ﬁxed designation A564/A564M; 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
2
covers bars and shapes of age-
hardening stainless steels. Hot-ﬁnished or cold-ﬁnished rounds,
squares, hexagons, bar shapes, angles, tees, and channels are
included; these shapes may be produced by hot rolling,
extruding, or forging. Billets or bars for reforging may be
purchased to this speciﬁcation.
1.2 These steels are generally used for parts requiring
corrosion resistance and high strength at room temperature, or
at temperatures up to 600 °F [315 °C]; 700 °F [370 °C] for
Type 632; 840 °F [450 °C] for Type UNS S46910. They are
suitable for machining in the solution-annealed condition after
which they may be age-hardened to the mechanical properties
speciﬁed in Section 7without danger of cracking or distortion.
Type XM-25 is machinable in the as-received fully heat treated
condition. Type UNS S46910 is suitable for machining in the
solution-annealed, cold-worked, and aged-hardened condition.
1.3 Types 631 and 632 contain a large amount of ferrite in
the microstructure and can have low ductility in forgings and
larger diameter bars. Applications should be limited to small
diameter bar.
1.4 The values stated in either inch-pound units or SI
(metric) units are to be regarded separately as standards; within
the text and tables, the SI units are shown in [brackets]. The
values stated in each system are not exact equivalents;
therefore, each system must be used independent of the other.
Combining values from the two systems may result in noncon-
formance with the speciﬁcation.
1.5 Unless the order speciﬁes an “M” designation, the
material shall be furnished to inch-pound units.
NOTE 1—For forgings, see Speciﬁcation A705/A705M.
NOTE 2—For billets and bars for forging see Speciﬁcation A314.
1.6 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:
3
A314 Speciﬁcation for Stainless Steel Billets and Bars for
Forging
A370 Test Methods and Deﬁnitions for Mechanical Testing
of Steel Products
A484/A484M Speciﬁcation for General Requirements for
Stainless Steel Bars, Billets, Shapes, and Forgings
A705/A705M Speciﬁcation for Age-Hardening Stainless
Steel Forgings
A751 Test Methods and Practices for Chemical Analysis of
Steel Products
E527 Practice for Numbering Metals and Alloys in the
Uniﬁed Numbering System (UNS)
2.2 Other Documents:
SAE J1086 Recommended Practice for Numbering Metals
and Alloys (UNS)
4
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 Type or UNS designation (Table 1),
3.1.3 Speciﬁc melt type when required,
3.1.4 Heat treated condition (5.1),
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
A01.17 on Flat-Rolled and Wrought Stainless Steel.
Current edition approved Nov. 1, 2025. Published November 2025. Originally
approved in 1966. Last previous edition approved in 2019 as A564/A564M – 19a.
DOI: 10.1520/A0564_A0564M-25.
2
For ASME Boiler and Pressure Vessel Code applications, see related Speciﬁ-
cation SA-564/SA-564M in Section II of that Code.
3
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.
4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Dr., Warrendale, PA 15096-0001, 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.
1

3.1.5 Transverse properties when required (7.6),
3.1.6 Finish (Speciﬁcation A484/A484M),
3.1.7 Surface preparation of shapes (5.2.1),
3.1.8 Size, or applicable dimension including diameter,
thickness, width, length, and so forth,
3.1.9 Preparation for delivery (Speciﬁcation A484/A484M),
3.1.10 Special requirements (refer to 7.4 and 8.3),
3.1.11 Marking requirements (Speciﬁcation A484/A484M),
and
3.1.12 ASTM designation and date of issue if other than that
currently published.
3.2 If possible, the intended 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 3—A typical ordering description is as follows: 5000 lb [2270 kg]
Type 630, Solution-Annealed Cold Finished Centerless Ground, 1
1
⁄
2
in.
[38.0 mm] round bar, 10 ft to 12 ft [3.0 m to 3.6 m] in length, ASTM A564
dated ______. End use: valve shafts.
4. General Requirements
4.1 In addition to the requirements of this speciﬁcation, all
requirements of the current edition of Speciﬁcations A484/
A484M shall apply. Failure to comply with the general
requirements of Speciﬁcation A484/A484M constitutes non-
conformance with this speciﬁcation.
5. Materials and Manufacture
5.1 Heat Treatment and Condition:
5.1.1 Material of types other than XM-16, XM-25, and Type
630 shall be furnished in the solution-annealed condition, or in
the equalized and oven-tempered condition, as noted in Table
2, unless otherwise speciﬁed by the purchaser.
5.1.1.1 Types 630, XM-16, and XM-25 may be furnished in
the solution-annealed or age-hardened condition.
5.1.2 Type UNS S46500 and S46910 shall be furnished in
solution-annealed condition in accordance with Table 2, or
solution-annealed and cold-worked condition in accordance
with Table 3, or aged-hardened condition in accordance with-
Table 4.
5.1.3 Reforging stock shall be supplied in a condition of
heat treatment to be selected by the forging manufacturer.
5.2 Shapes may be subjected to either Class A or Class C
preparation as speciﬁed on the purchase order.
5.2.1 Class A consists of preparation by grinding for the
removal of imperfections of a hazardous nature such as ﬁns,
tears, and jagged edges provided the underweight tolerance is
not exceeded and the maximum depth of grinding at any one
point does not exceed 10 % of the thickness of the section.
5.2.2 Class C consists of preparation by grinding for the
removal of all visible surface imperfections provided the
underweight tolerance is not exceeded and the maximum depth
of grinding at any one point does not exceed 10 % of the
thickness of the section.
6. Chemical Composition
6.1 Each alloy covered by this speciﬁcation shall conform to
the chemical requirements speciﬁed in Table 1.
6.2 Methods and practices relating to chemical analysis
required by this speciﬁcation shall be in accordance with Test
Methods, Practices, and Terminology A751.
7. Mechanical Properties Requirements
7.1 The material, as represented by mechanical test
specimens, shall conform to the mechanical property require-
ments speciﬁed in Table 2 or Table 3 and shall be capable of
developing the properties in Table 4 when heat treated as
speciﬁed in 5.1.
TABLE 1 Chemical Requirements
A
Composition, %
UNS
Designation
B
Type C Mn P S Si Cr Ni Al Mo Ti Cu Other
Elements
S17400 630 0.07 1.00 0.040 0.030 1.00 15.00–17.50 3.00–5.00 . . . . . . . . . 3.00–5.00
C
S17700 631 0.09 1.00 0.040 0.030 1.00 16.00–18.00 6.50–7.75 0.75–1.50 . . . . . . . . . . . .
S15700 632 0.09 1.00 0.040 0.030 1.00 14.00–16.00 6.50–7.75 0.75–1.50 2.00–3.00 . . . . . . . . .
S35500 634 0.10–0.15 0.50–1.25 0.040 0.030 0.50 15.00–16.00 4.00–5.00 . . . 2.50–3.25 . . . . . .
D
S17600 635 0.08 1.00 0.040 0.030 1.00 16.00–17.50 6.00–7.50 0.40 . . . 0.40–1.20 . . . . . .
S15500 XM-12 0.07 1.00 0.040 0.030 1.00 14.00–15.50 3.50–5.50 . . . . . . . . . 2.50–4.50
C
S13800 XM-13 0.05 0.20 0.010 0.008 0.10 12.25–13.25 7.50–8.50 0.90–1.35 2.00–2.50 . . . . . .
E
S45500 XM-16 0.03 0.50 0.015 0.015 0.50 11.00–12.50 7.50–9.50 . . . 0.50 0.90–1.40 1.50–2.50
F
S45503 . . . 0.010 0.50 0.010 0.010 0.20 11.00–12.50 7.50–9.50 . . . 0.50 1.00–1.35 1.50–2.50
F
S45000 XM-25 0.05 1.00 0.030 0.030 1.00 14.00–16.00 5.00–7.00 . . . 0.50–1.00 . . . 1.25–1.75
G
S46500 . . . 0.02 0.25 0.015 0.010 0.25 11.00–12.50 10.75–11.25 . . . 0.75–1.25 1.50–1.80 . . .
E
S46910 . . . 0.030 1.00 0.030 0.015 0.70 11.0–13.0 8.0–10.0 0.15–0.50 3.0–5.0 0.50–1.20 1.5–3.5 . . .
S10120 . . . 0.02 0.25 0.015 0.010 0.25 11.00–12.50 9.00–10.50 0.80–1.10 1.75–2.25 0.20–0.50 . . .
E
S11100 . . . 0.02 0.25 0.015 0.010 0.25 11.00–12.50 10.25–11.25 1.35–1.75 1.75–2.25 0.20–0.50 . . .
E
A
Limits are in percent maximum unless shown as a range or stated otherwise.
B
New designation established in accordance with Practice E527 and SAE J1086.
C
Niobium
H
0.15–0.45.
D
Nitrogen 0.07–0.13.
E
Nitrogen 0.01.
F
Niobium 0.10–0.50.
G
Niobium 8 times carbon minimum.
H
Niobium (Nb) and Columbium (Cb) refer to the same element.
A564/A564M − 25
2

TABLE 2 Solution Treatment

UNS

Desig-

nation

Type Condi-

tion Solution Treatment

Mechanical Test Requirements in Solution Treated Condition

Tensile Strength, min Yield Strength, min

Elongation

in 2 in. [50

mm] or 4D,

min. %

Reduction

of Area,

min %

Hardness

ksi [MPa] ksi [MPa] Rockwell C,

max

Brinell,

max

S17400 630 A 1900 ± 25 °F [1040 ± 15 °C] (cool as

required to below 90 °F (32 °C))

... ... ... ... ... ... 38 363

S17700 631 A 1900 ± 25 °F [1040 ± 15 °C] (water

quench)

. . . . . . . . . . . . . . . . . . HRB98 229

S15700 632 A 1900 ± 25 °F [1040 ± 15 °C] (water

quench)

. . . . . . . . . . . . . . . . . . HRB100 269

S35500 634

A 1900 ± 25 °F [1040 ± 15 °C] quench,

hold not less than 3 h at minus 100

°F or lower

... ... ... ... ... ... ... 363

S17600 635 A 1900 ± 25 °F [1040 ± 15 °C] (air

cool)

120 [825] 75 [515] 10 45 32 302

S15500 XM-12 A 1900 ± 25 °F [1040 ± 15 °C] (cool as

required to below 90 °F (32 °C))

... ... ... ... ... ... 38 363

S13800 XM-13 A 1700 ± 25 °F [925 ± 15 °C] Cool as

required to below 60 °F [16 °C]

... ... ... ... ... ... 38 363

S45500 XM-16 A 1525 ± 25 °F [830 ± 15 °C] (cool

rapidly)

... ... ... ... ... ... 36 331

S45000 XM-25 A 1900 ± 25 °F [1040 ± 15 °C] (cool

rapidly)

125

[860] 95 [655] 10 40 32 321

S45503 . . . A 1525 ± 25 °F [830 ± 15 °C] (cool

rapidly)

... ... ... ... ... ... 36 331

S46500 . . . A 1800 ± 25 °F [980 ± 15 °C] (oil or

water quench), hold for min. 8 h at

minus 100 °F (-73 °C), air warm

... ... ... ... ... ... 36 331

S46910 . . . A 1830 – 2050 °F [1000 – 1120 °C]

(cool rapidly)

87 [600] 58 [400] 10 . . . 33 315

S10120 . . . A 1545 ± 25 °F [840 ± 14 °C]

(cool rapidly below 90 °F [32 °C])

... ... ... ... ... ... 36 331

S11100 . . . A 1545 ± 25 °F [840 ± 14 °C]

(oil or water quench),

hold for minimum of 8 h at

-100 °F [-73 °C],

air warm

... ... ... ... ... ... 36 331

See 7.1.

See 7.3.

Either Rockwell C hardness or Brinell is permissible. On sizes ½ in. (12.70 mm) and smaller, Rockwell C is preferred.

321 for rounds cold drawn after solution treating.

Equalization and over-tempering treatment 1425 °F ± 50 °F [775 °C ± 30 °C] for not less than 3 h, cool to room temperature, heat to 1075 °F ± 25 °F [580 °C ± 15 °C]

for not less than 3 h.

Maximum 165 ksi [1140 MPa] tensile strength only for sizes up to

⁄

in. (13 mm).

Required hold time at minus 100 °F [–73 °C] is not mandatory if product is under 2 in. [51 mm] thickness.

TABLE 3 Solution-Annealed and Cold-Worked Condition

UNS

Designation Type Condition

Mechanical Test Requirements in Solution-Annealed and Cold-Worked Condition

Tensile Strength, min Yield Strength, min Elongation in

2 in. [50 mm]

or 4D, min %

Reduction of

Area, min %

Hardness

ksi [MPa] ksi [MPa] Rockwell C,

max Brinell, max

S46500 . . . [Table 2

Condition A] +

... ... ... ... ... ... 40 380

S46910 . . . CW

⁄

hard 131 [900] 109 [750] 8 . . . 40 380

. . . CW full hard 189 [1300] 175 [1200] 3 . . . 55 580

A564/A564M − 25

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摘要：

本规范为ASTM A564/A564M-25热轧和冷精整时效硬化不锈钢棒材与型材提供了统一的技术要求，涵盖材料的化学成分、力学性能、热处理制度、尺寸允许偏差及试验方法等核心内容。该标准适用于以马氏体时效硬化不锈钢和沉淀硬化不锈钢为代表的棒材和型材产品，典型钢种包括17-4PH、15-5PH等，能够在高强度和耐腐蚀性之间实现良好平衡，广泛用于航空航天、石油化工、核电、海洋工程及高端装备制造领域。标准中的“M”标识代表采用国际单位制（SI）的版本，便于全球贸易和技术交流。通过明确交货状态、时效处理规

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