ASTM A724/A724M-04

Standard Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, Quenched and Tempered, for Welded Layered Pressure Vessels

ABSTRACT
This specification covers standard requirements for three grades of carbon-manganese-silicon steel, designated Grades A, B, and C. Grade C may be produced with a boron addition. The plates shall be quenched and tempered and shall be intended for welded-layered pressure vessels. The steel shall be killed and shall conform to the fine austenitic grain size requirement. Heat and product analyses shall be performed wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, molybdenum, vanadium, and boron. The steel plate shall undergo tension test and shall conform to tensile requirements such as tensile strength, yield strength, and elongation.
SCOPE
1.1 This specification covers three grades of carbon-manganese-silicon steel, designated Grades A, B, and C. Grade C may be produced with a boron addition. The plates are quenched and tempered and are intended for welded-layered pressure vessels.
1.2 The maximum thickness of plates supplied under this specification is limited only by the capability of the chemical composition to meet the specified mechanical requirements. However, current practice normally limits the maximum thickness to 7/8in. [22 mm] for Grades A and B, and to 2 in. [50 mm] for Grade C.
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 specification.

General Information

• Status: Historical
• Publication Date: 30-Jun-2004
• ICS: 77.140.30 - Steels for pressure purposes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.11 - Steel Plates for Boilers and Pressure Vessels

Relations

• Replaces: ASTM A724/A724M-99 - Standard Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, Quenched and Tempered, for Welded Layered Pressure Vessels
• Effective Date: 01-Jul-2004
• Replaced By: ASTM A724/A724M-09 - Standard Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, Quenched and Tempered, for Welded Layered Pressure Vessels
• Effective Date: 01-Oct-2009
• Referred By: ASTM A20/A20M-20 - Standard Specification for General Requirements for Steel Plates for Pressure Vessels
• Effective Date: 01-Jul-2004
• Referred By: ASTM F1106-87(2023) - Standard Specification for Warping Heads, Rope Handling (Gypsy Head, Capstan Head)
• Effective Date: 01-Jul-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A724/A724M – 04
Standard Specification for
Pressure Vessel Plates, Carbon-Manganese-Silicon Steel,
1
Quenched and Tempered, for Welded Pressure Vessels
This standard is issued under the fixed designationA724/A724M; 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.
1. Scope* line the testing and retesting methods and procedures, permis-
2 sible variations in dimensions and weight, quality and repair of
1.1 This specification covers three grades of carbon-
defects, marking, loading, etc.
manganese-silicon steel, designated GradesA, B, and C. Grade
3.2 Specification A20/A20M also establishes the rules for
C may be produced with a boron addition. The plates are
the ordering information that should be complied with when
quenched and tempered and are intended for welded-layered
purchasing material to this specification.
pressure vessels.
3.3 In addition to the basic requirements of this specifica-
1.2 The maximum thickness of plates supplied under this
tion, certain supplementary requirements are available when
specification is limited only by the capability of the chemical
additional control, testing, or examination is required to meet
composition to meet the specified mechanical requirements.
end use requirements. These include:
However, current practice normally limits the maximum thick-
7 3.3.1 Vacuum treatment,
nessto ⁄8in.[22mm]forGradesAandB,andto2in.[50mm]
3.3.2 Additional or special tension testing,
for Grade C.
3.3.3 Impact testing, and
1.3 The values stated in either inch-pound units or SI units
3.3.4 Nondestructive examination.
are to be regarded separately as standard. Within the text, the
3.4 The purchaser is referred to the listed supplementary
SI units are shown in brackets. The values stated in each
requirements in this specification and to the detailed require-
system are not exact equivalents; therefore, each system must
ments in Specification A20/A20M.
be used independently of the other. Combining values from the
3.5 If the requirements of this specification are in conflict
two systems may result in nonconformance with the specifi-
with the requirements of SpecificationA20/A20M, the require-
cation.
ments of this specification shall prevail.
2. Referenced Documents
4. Manufacture
3
2.1 ASTM Standards:
4.1 SteelmakingProcess—The steel shall be killed and shall
A20/A20M Specification for General Requirements for
conform to the fine austenitic grain size requirement of
Steel Plates for Pressure Vessels
Specification A20/A20M.
3. General Requirements and Ordering Information
5. Heat Treatment
3.1 Material supplied to this material specification shall
5.1 All plates shall be quenched from a temperature in the
conform to Specification A20/A20M. These requirements out-
range from 1600 to 1700°F [870 to 925°C]. Grades A and B
shall then be tempered at not less than 1100°F [595°C], and
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Grade C shall then be tempered at not less than 1150°F
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
1
[620°C]. The tempering soaking time shall be not less than ⁄2
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved July 1, 2004. Published July 2004. Originally approved
h.
in 1975. Last previous edition approved in 1999 as A724/A724M–99. DOI:
10.1520/A0724_A0724M-04.
6. Chemical Composition
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
6.1 The steel shall conform to the requirements as to
cation SA-724/SA-724M in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
chemical composition prescribed in Table 1.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*ASummary 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.
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A724/A724M – 04
TABLE 1 Chemical Requirements TABLE 2 Tensile Requirements
Composition, % Grades A and C, Grade B,
Element
ksi [MPa] ksi [MPa]
Grade A Grade B Grade C
Tensile strength 90–110 [620–760] 95–115 [655–795]
Carbon, max:
Yield strength, min 70 [485] 75 [515]
Heat analysis 0.18 0.20 0.22
Elongation in 2 in. [50 mm], 19 17
Product analysis 0.22 0.24 0.26
A,B
min, %
Manganese:
A
Heat analysis 1.00–1.60 1.00–1.60 1.10–1.60 See Specification A20/A20M for elongation adjustment.
B
See 7
...