ASTM A352 - A 352M - 21

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Designation: A352/A352M −21

Standard Speciﬁcation for

Steel Castings, Ferritic and Martensitic, for Pressure-

Containing Parts, Suitable for Low-Temperature Service

This standard is issued under the ﬁxed designation A352/A352M; 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 steel castings for valves,

ﬂanges, ﬁttings, and other pressure-containing parts intended

primarily for low-temperature service.

1.2 Several grades of ferritic steels and one grade of

martensitic steel are covered. Selection of analysis will depend

on design and service conditions (Note 1). The temperature

shown is the lowest temperature at which the material ordinar-

ily is required to meet the impact requirements of this

speciﬁcation (see Supplementary Requirement S51, Impact

Test Temperatures). Users should note that hardenability of

some of the grades mentioned may restrict the maximum size

at which the required mechanical properties are obtainable (see

Appendix X1).

Grade Usual Minimum Testing

Temperatures, °F [°C]

LCA −25 [–32]

LCB −50 [–46]

LCC −50 [–46]

LC1 −75 [–59]

LC2 −100 [–73]

LC2-1 −100 [–73]

LC3 −150 [–101]

LC4 −175 [–115]

LC9 −320 [–196]

CA6NM −100 [−73]

NOTE 1—This speciﬁcation covers the low-temperature requirements

particularly pertinent for ferritic and martensitic steels. Certain grades of

austenitic steel castings furnished in accordance with Speciﬁcation A351/

A351M have been found suitable for low-temperature service down to

−300 °F [−184 °C] and others down to −425 °F [−254 °C]. These grades

may be used when impact tested in accordance with Speciﬁcation

A352/A352M with energy levels and temperatures of test mutually agreed

upon between the purchaser and the manufacturer. As a guide to the

selection of energy levels and testing temperatures, Appendix X1 should

be consulted.

1.3 The values stated in either inch-pound units or SI units

are to be regarded separately as standard. Within the text, the

SI units are shown in brackets. The values stated in each

system are not exact equivalents; therefore, each system must

be used independently of the other. Combining values from the

two systems may result in nonconformance with the speciﬁ-

cation. Inch-pound units are applicable for material ordered to

Speciﬁcation A352 and SI units for material ordered to

Speciﬁcation A352M.

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:

A351/A351M Speciﬁcation for Castings, Austenitic, for

Pressure-Containing Parts

A488/A488M Practice for Steel Castings, Welding, Qualiﬁ-

cations of Procedures and Personnel

A703/A703M Speciﬁcation for Steel Castings, General

Requirements, for Pressure-Containing Parts

E165/E165M Practice for Liquid Penetrant Testing for Gen-

eral Industry

E709 Guide for Magnetic Particle Testing

2.2 Manufacturers Standardization Society of the Valve and

Fittings Industry Standard:

SP-55 Quality Standard for Steel Castings for Valves,

Flanges, and Fittings and Other Piping Components (Vi-

sual Method)

This speciﬁcation is under the jurisdiction of ASTM Committee A01 on Steel,

Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee

A01.18 on Castings.

Current edition approved March 1, 2021. Published March 2021. Originally

approved in 1952. Last previous edition approved in 2018 as A352/A352M – 18a.

DOI: 10.1520/A0352_A0352M-21.

For ASME Boiler and Pressure Vessel Code applications, see related Speciﬁ-

cation SA-352, in Section II of that Code.

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.

Available from Manufacturers Standardization Society of the Valve and Fittings

Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.

*A Summary of Changes section appears at the end of this standard

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.

3. General Conditions for Delivery

3.1 Material furnished to this speciﬁcation shall conform to

the requirements of Speciﬁcation A703/A703M, including any

supplementary requirements that are indicated in the purchase

order. Failure to comply with the general requirements of

Speciﬁcation A703/A703M constitutes nonconformance with

this speciﬁcation. In case of conﬂict between the requirements

of this speciﬁcation and Speciﬁcation A703/A703M, this

speciﬁcation shall prevail.

4. Ordering Information

4.1 The inquiry and order should include or indicate the

following:

4.1.1 A description of the casting by pattern number or

drawing (dimensional tolerances shall be included on the

casting drawing),

4.1.2 Grade of steel,

4.1.3 Options in the speciﬁcation, and

4.1.4 The supplementary requirements desired, including

the standards of acceptance.

5. Heat Treatment

5.1 All castings shall receive a heat treatment proper to their

design and chemical composition. It should be recognized that

liquid quenching of the ferritic grades is normally required to

meet the mechanical properties of heavier sections and will

greatly enhance the low-temperature properties of thinner

sections.

5.2 Ferritic castings shall be furnished in the normalized and

tempered or liquid quenched and tempered condition, except

for Grade LC9, which shall be liquid quenched and tempered.

Castings shall be tempered at a minimum of 1100 °F [590 °C],

except Grade LC4, which shall be 1050 °F [565 °C], and Grade

LC9, which shall be tempered in the range of 1050 to 1175 °F

[565 to 635 °C], followed by cooling in air or liquid.

5.3 CA6NM castings shall be heat treated by heating to

1850 °F [1010 °C] minimum, and air cooling to 200 °F [95 °C]

maximum before any optional intermediate temper, but shall

cool to 100 °F [40 °C] maximum before the ﬁnal temper,

which shall be between 1050 and 1150 °F [565 and 620 °C].

5.4 Castings shall be allowed to cool below the transforma-

tion range directly after pouring and solidiﬁcation before they

are reheated for normalizing or liquid quenching.

5.5 Temperature Control—Furnace temperature for heat

treating shall be controlled by use of pyrometers.

6. Chemical Composition

6.1 The steel shall conform to the chemical composition

requirements for the grade ordered, as speciﬁed in Table 1.

7. Mechanical Requirements

7.1 Tension Test:

7.1.1 Tensile properties of steel used for the castings shall

conform to the requirements speciﬁed in Table 2.

7.2 Impact Test:

7.2.1 The notched bar impact properties of the material shall

be determined by testing a set of three Charpy V-notch impact

specimens for each heat at one of the standard test temperatures

shown in Table 2, depending on the intended service tempera-

ture (see Appendix X1). The average energy value of the three

specimens shall not be less than speciﬁed in Table 2, with not

more than one value permitted below the average minimum

speciﬁed and no value permitted below the minimum speciﬁed

for a single specimen.

8. Quality

8.1 The surface of the casting shall be examined visually

and shall be free of adhering sand, scale, cracks, and hot tears.

Other surface discontinuities shall meet the visual acceptance

standards speciﬁed in the order. Visual Method SP-55 or other

visual standards may be used to deﬁne acceptable surface

discontinuities and ﬁnish. Unacceptable visual surface discon-

tinuities shall be removed and their removal veriﬁed by visual

examination of the resultant cavities. When methods involving

high temperature are used in the removal of discontinuities,

castings shall be preheated to at least the minimum tempera-

tures in Table 3.

8.2 When additional inspection is desired, Supplementary

Requirements S4, S5, and S10 may be ordered.

8.3 The castings shall not be peened, plugged, or impreg-

nated to stop leaks.

9. Repair by Welding

9.1 Repairs shall be made using procedures and welders in

accordance with Practice A488/A488M.

9.2 Welding of Grade LC9 shall be accomplished using

nonmagnetic ﬁller material of AWS classiﬁcation ENiCrFe-2,

and shall require liquid penetrant inspection of the weld

(Supplementary Requirement S6) when magnetic particle in-

spection (Supplementary Requirement S4) is speciﬁed for the

casting.

9.3 Weld repairs shall be inspected to the same quality

standards that are used to inspect the castings. When castings

are produced with Supplementary Requirement S4 speciﬁed,

weld repairs shall be inspected by magnetic particle examina-

tion to the same standards that are used to inspect the castings.

When castings are produced with Supplementary Requirement

S5 speciﬁed, weld repairs on castings that have leaked on

hydrostatic tests, or on castings in which the depth of any

cavity prepared for repair welding exceeds 20 % of the wall

thickness or 1 in. [25 mm], whichever is smaller, or on castings

in which any cavity prepared for welding is greater than

approximately 10 in.

[65 cm

] shall be radiographed to the

same standards that are used to inspect the castings.

9.4 Castings containing any repair weld that exceeds 20 %

of the wall thickness, or 1 in. [25 mm], whichever is smaller,

or that exceeds approximately 10 in.

[65 cm

] in area, or that

was made to correct hydrostatic test defects shall be stress

relieved or heat treated after welding. This mandatory stress

relief or heat treatment shall be in accordance with the

procedure qualiﬁcation used. When stress relief is required for

Grade LC9, cooling shall be in still air.

A352/A352M − 21

TABLE 1 Chemical Requirements

A,B

Material Grade

UNS

Type

Composition, %

Carbon Manganese Phosphorus Sulfur Silicon Nickel Chromium Molybdenum Copper Vanadium

LCA

J02504

Carbon Steel

0.25 0.70 0.04 0.045 0.60 0.50

0.50

0.20 0.30 0.03

LCB

J03003

Carbon Steel

0.30 1.00 0.04 0.045 0.60 0.50

0.50

0.20

0.30

0.03

LCC

J02505

C-Mn Steel

0.25 1.20 0.04 0.045 0.60 0.50

0.50

0.20

0.30

0.03

LC1

J12522

C-Mo Steel

0.25 0.50–0.80 0.04 0.045 0.60 . . . . . . 0.45–0.65 . . . . . .

LC2

J22500

2.5Ni Steel

0.25 0.50–0.80 0.04 0.045 0.60 2.00–3.00 . . . . . . . . . . . .

LC2-1

J42215

Ni-Cr-Mo Steel

0.22 0.55–0.75 0.04 0.045 0.50 2.50–3.50 1.35–1.85 0.30–0.60 . . . . . .

LC3

J31550

3.5Ni Steel

0.15 0.50–0.80 0.04 0.045 0.60 3.00–4.00 . . . . . . . . . . . .

LC4

J41500

4.5Ni Steel

0.15 0.50–0.80 0.04 0.045 0.60 4.00–5.00 . . . . . . . . . . . .

LC9

J31300

9Ni Steel

0.13 0.90 0.04 0.045 0.45 8.50–10.0 0.50 0.20 0.30 0.03

CA6NM

J91540

12.5Cr-Ni-Mo Steel

0.06 1.00 0.04 0.03 1.00 3.5–4.5 11.5–14.0 0.4–1.0 . . . . . .

All values are maximums unless a range is provided.

Where “. . .” appears in this table, there is no requirement, and the element need not be analyzed for or reported.

For each reduction of 0.01 % below the speciﬁed maximum carbon content, an increase of 0.04 % manganese above the speciﬁed maximum will be permitted up to a maximum of 1.10 % for LCA, 1.28 % for LCB,

and 1.40 % for LCC.

Speciﬁed Residual Elements—The total content of these elements is 1.00 % maximum.

A352/A352M − 21

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摘要：

ASTM A352 - A 352M - 21 是当前最新版本的国际标准规范，适用于低温承压环境下使用的铁素体与马氏体钢铸件。该标准覆盖了多种牌号的材料，如 LCA、LCB、LCC 等，规定了其化学成分、力学性能、热处理要求以及冲击韧性测试方法，确保铸件在低至 -100°C 的极端温度下仍具备足够的韧性与可靠性。ASTM A352 / A352M - 21 版本由 ASTM 国际标准组织于 2021 年发布，替代了此前版本，旨在为石油化工、液化天然气设备、低温储罐以及各类压力容器制造提供更精确的

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