ASTM A1001-18

Standard Specification for High-Strength Steel Castings in Heavy Sections

ABSTRACT
This specification covers cast alloy steels in the normalized and tempered or quenched and tempered condition, suitable for high strain gradient conditions. One test block for each heat is required. The test block configuration and size are specified. Tension and Charpy impact tests and oxygen, nitrogen, and hydrogen gas content tests shall be performed. The steel shall be made by electric furnace process with methods, such as argon-oxygen-decarburization, to conform to the maximum gas level. Heat treatment procedure shall be done. Multiple austenitizing and tempering are permitted. The chemistry grade shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, and aluminum. Residual elements include: zirconium, copper, titanium, tungsten, vanadium, columbium, and boron. A product analysis shall be made for specification conformance. Casting shell and core depth zone shall be established and examined. Repair methods such as grinding and welding are detailed.
SCOPE
1.1 This specification covers cast alloy steels in the normalized and tempered or quenched and tempered condition, in section sizes through 37 in. (940 mm), suitable for high-strain gradient conditions such as those encountered in hooks, shackles, support frames, and other lifting devices. The classes of steel in this specification are weldable only with qualified procedures.  
1.2 Section range and class selection will depend on design and service conditions. Users should note that this specification contemplates mechanical property gradients.  
1.3 The values stated in inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in parentheses. 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. Inch-pound units are applicable for material ordered to this specification and SI units for material ordered to this specification.  
1.4 If, by agreement, castings are to be supplied in a partially completed condition, that is, all of the provisions of the product specification have not been filled, then the material marking (see Section 15) and certification (see Section 14) are to reflect the extent to which the product specification requirements have been met.  
1.5 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.

General Information

• Status: Published
• Publication Date: 31-Aug-2018
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaces: ASTM A1001-01(2015) - Standard Specification for High Strength Steel Castings in Heavy Sections
• Effective Date: 01-Sep-2018
• Refers: ASTM A370-24 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Mar-2024
• Refers: ASTM A609/A609M-12(2023) - Standard Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof
• Effective Date: 01-Nov-2023
• Refers: ASTM A370-19 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Jul-2019
• Refers: ASTM A703/A703M-18a - Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
• Effective Date: 01-Sep-2018
• Refers: ASTM A703/A703M-18 - Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
• Effective Date: 01-May-2018
• Refers: ASTM A370-17a - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-Nov-2017
• Refers: ASTM A703/A703M-17a - Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
• Effective Date: 01-Nov-2017
• Refers: ASTM A703/A703M-17 - Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
• Effective Date: 01-May-2017
• Refers: ASTM A370-17 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Jan-2017
• Refers: ASTM A370-15 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Nov-2015
• Refers: ASTM A703/A703M-15 - Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
• Effective Date: 01-Jun-2015
• Refers: ASTM A703/A703M-15e1 - Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
• Effective Date: 01-Jun-2015
• Refers: ASTM A370-14 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-May-2014
• Refers: ASTM A370-13 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-Nov-2013

Overview

ASTM A1001-18 is the internationally recognized standard specification for high-strength steel castings in heavy sections, issued by ASTM International. This specification details the requirements for alloy steel castings in normalized and tempered or quenched and tempered conditions, specifically engineered for use in heavy-duty, high-strain environments found in large-scale industrial components. The standard applies to castings with section sizes up to 37 inches (940 mm), ensuring reliable performance where mechanical property gradients are important, such as hooks, shackles, support frames, and similar lifting devices. ASTM A1001-18 is designed to support stringent testing, manufacturing, and inspection protocols to ensure product quality and safety.

Key Topics

• Material Scope: Specifies requirements for cast alloy steels treated in normalized and tempered or quenched and tempered conditions.
• Section Sizes: Covers a range of heavy-section sizes, up to 37 inches (940 mm), suitable for demanding service applications.
• Mechanical Properties: Outlines detailed mechanical properties, including required tensile strength, yield strength, elongation, reduction of area, and minimum Charpy V-notch impact values at various section thicknesses.
• Chemical Composition: Establishes limits on carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, aluminum, and allowable levels for residual elements like zirconium, copper, titanium, tungsten, vanadium, columbium, and boron.
• Gas Content: Requires testing and strict limits for oxygen, nitrogen, and hydrogen gas contents to enhance material integrity.
• Heat Treatment: Details mandatory heat treatment procedures, with options for multiple austenitizing and tempering cycles.
• Testing Protocols: Mandates production of test blocks for each heat, tension and impact tests at specified locations, and gas content verification. Includes procedures for retesting, certification, and reporting.
• Examination and Inspection: Requires visual examination, nondestructive testing (magnetic particle, liquid penetrant, ultrasonic, or radiographic inspection), and internal defect evaluation in both shell and core zones.
• Repair Methods: Provides clear guidelines for grinding and welding of castings, along with subsequent inspections and heat treatment.

Applications

ASTM A1001-18 is crucial for industries that demand robust, high-performance steel castings for heavy-duty operations. Its rigorous specifications ensure the mechanical reliability and safety of components used in:

• Lifting Equipment: Hooks, shackles, lifting frames, and support structures exposed to high stress.
• Construction Equipment: Structural parts subjected to heavy loads and extreme service conditions.
• Mining and Material Handling: Components for hoists, cranes, and other machinery handling large static and dynamic loads.
• Energy Sector: Pressure-retaining castings in power generation, oil and gas, and petrochemical applications.
• Heavy Machinery: Castings for earth-moving, shipbuilding, and transport equipment where performance under high strain is essential.

The comprehensive approach to testing and certification helps manufacturers, designers, and end-users ensure conformity with globally accepted quality and safety requirements for steel castings in heavy sections.

Related Standards

ASTM A1001-18 references a number of related standards to support its requirements, including:

• ASTM A370: Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM A703/A703M: General Requirements Specification for Steel Castings for Pressure-Containing Parts
• ASTM A609/A609M: Ultrasonic Examination of Castings
• ASTM E94/E94M: Radiographic Examination Using Industrial Film
• ASTM E165/E165M: Liquid Penetrant Examination
• ASTM E709: Guide for Magnetic Particle Testing
• ASTM E1019: Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Metals
• ASTM E1447: Determination of Hydrogen in Titanium Alloys
• ASTM E1806: Sampling for Chemical Composition
• MSS SP-55: Quality Standard for Steel Castings - Visual Method

These referenced documents collectively establish a robust framework for testing, inspection, and quality assurance, ensuring that heavy-section steel castings meet or exceed industry requirements for demanding applications.

Keywords: high-strength steel castings, heavy section steel, ASTM A1001-18, mechanical testing, heavy-duty components, nondestructive examination, steel casting specification, quality assurance, industrial steel standards.

Standards Content (Sample)

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.
Designation:A1001 −18
Standard Specification for
High-Strength Steel Castings in Heavy Sections
This standard is issued under the fixed designation A1001; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers cast alloy steels in the normal-
ized and tempered or quenched and tempered condition, in A370Test Methods and Definitions for Mechanical Testing
of Steel Products
section sizes through 37 in. (940 mm), suitable for high-strain
gradient conditions such as those encountered in hooks, A609/A609MPractice for Castings, Carbon, Low-Alloy,
shackles, support frames, and other lifting devices.The classes and Martensitic Stainless Steel, Ultrasonic Examination
of steel in this specification are weldable only with qualified Thereof
procedures. A703/A703M Specification for Steel Castings, General
Requirements, for Pressure-Containing Parts
1.2 Section range and class selection will depend on design
E94/E94MGuide for Radiographic Examination Using In-
andserviceconditions.Usersshouldnotethatthisspecification
dustrial Radiographic Film
contemplates mechanical property gradients.
E165/E165MPractice for Liquid Penetrant Testing for Gen-
1.3 The values stated in inch-pound units or SI units are to
eral Industry
beregardedseparatelyasstandard.Withinthetext,theSIunits
E709Guide for Magnetic Particle Testing
are shown in parentheses.The values stated in each system are
E1019Test Methods for Determination of Carbon, Sulfur,
not exact equivalents; therefore, each system must be used
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
independently of the other. Combining values from the two
Alloys by Various Combustion and Inert Gas Fusion
systems may result in nonconformance with the specification.
Techniques
Inch-pound units are applicable for material ordered to this
E1447Test Method for Determination of Hydrogen in Tita-
specification and SI units for material ordered to this specifi-
nium and Titanium Alloys by Inert Gas Fusion Thermal
cation.
Conductivity/Infrared Detection Method
E1806Practice for Sampling Steel and Iron for Determina-
1.4 If, by agreement, castings are to be supplied in a
tion of Chemical Composition
partially completed condition, that is, all of the provisions of
theproductspecificationhavenotbeenfilled,thenthematerial
2.2 ManufacturersStandardizationoftheValueandFittings
marking (see Section 15) and certification (see Section 14) are
Industry Standard:
to reflect the extent to which the product specification require-
MSS SP-55Quality Standard for Steel Castings—Visual
ments have been met.
Method
1.5 This international standard was developed in accor-
3. General Conditions for Delivery
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.1 Materialsfurnishedtothisspecificationshallconformto
Development of International Standards, Guides and Recom-
the applicable requirements of Specification A703/A703M,
mendations issued by the World Trade Organization Technical
includingthesupplementaryrequirementsthatareindicatedon
Barriers to Trade (TBT) Committee.
the purchase order.
1 2
This specification is under the jurisdiction of ASTM Committee A01 onSteel, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
A01.18 on Castings. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Sept. 1, 2018. Published September 2018. Originally the ASTM website.
approved in 1999. Last previous edition approved in 2015 as A1001–01(2015). AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
DOI: 10.1520/A1001-18. Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.
*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
A1001−18
3.2 Terminology and test methods shall be in accordance
with Test Methods and Definitions A370.
3.3 In the case of conflict between requirements of this
specification and referenced specifications, the former shall
prevail.
4. Ordering Information
4.1 It shall be the responsibility of the purchaser to specify
all requirements that are necessary for material ordered under
this specification. Such requirements to be considered include,
but are not limited to, the following:
4.1.1 A description of the casting by pattern number or a
fully dimensional and toleranced drawing,
4.1.2 ASTM designation and year of issue,
FIG. 1Test Block Configuration
4.1.3 Section range and class of steel (see Table 1),
4.1.4 Definition of inspection methods, extent of
TABLE 2 Section Range Definition and Test Block Dimensions
examination, frequency, casting quality zones, and acceptance
A
Section Size, in (mm) Test Block Dimensions, in (mm)
Section
criteria (see Section 11),
Range
Over Not Over T L
4.1.5 Product marking locations (see Section 15),
1 3 (76) 5 (127) 4 (102) 8 (203)
4.1.6 Certification report options (see Section 14),
2 5 (127) 7 (178) 6 (152) 8 (203)
4.1.7 Options in the specification (see 1.4 and 11.6), and
3 7 (178) 11 (279) 9 (229) 9 (229)
4 11 (279) 15 (381) 13 (330) 13 (330)
4.1.8 The supplementary requirements desired.
5 15 (381) 21 (533) 18 (457) 18 (457)
6 21 (533) 29 (737) 25 (635) 25 (635)
5. Test Block Requirements
7 29 (737) 37 (940) 33 (813) 33 (813)
A
5.1 The supplier shall produce a minimum of one test block
See Fig. 1.
for each heat.
5.2 TestblockconfigurationshallbeinaccordancewithFig.
1.Astandarddraftangleispermittedoverthelength“L”ofthe and geometry, service conditions, mechanical property corre-
test block, provided the minimum cylinder diameter is greater lations developed by the supplier, or other important factors.
than “T” given in Table 2.
5.4 Tension and Charpy impact tests shall be performed on
5.3 Test block size shall be in accordance with Table 2 for specimens taken from both the 1/8T and 3/8T locations and
specified section range. The section range selection made by shall be oriented within the 8-in. (203-mm) midsection as
the purchaser (see 4.1.3) should consider casting section size shown in Fig. 1.
TABLE 1 Required Mechanical Properties
Chemistry Tensile Strength, min Yield Strength, min ksi Elongation, 2 in (50 Reduction of Area, Charpy V-Notch, Min
A
Grade ksi (MPa) (MPa) at 0.2 % Offset mm) or 4d, min, % min % Average, ft-lb (J)
Section
B B B B B B B B B B
Class T/8 3T/8 T/8 3T/8 T/8 3T/8 T/8 3T/8 T/8 3T/8
Range
1 A I, II 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
1 B I 105 (725) 95 (655) 85 (585) 76 (525) 15 11 30 22 25 (34) 15 (20)
1 C I 90 (620) 80 (550) 70 (485) 63 (435) 17 13 34 26 25 (34) 15 (20)
2 A I 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
2 B I 105 (725) 95 (655) 85 (585) 76 (525) 16 12 32 24 25 (34) 15 (20)
2 C I 90 (620) 80 (550) 70 (485) 63 (435) 18 14 36 28 25 (34) 15 (20)
3 A I, III 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
3 B I 105 (725) 95 (655) 85 (585) 76 (525) 17 13 34 26 25 (34) 15 (20)
3 C I 90 (620) 80 (550) 70 (485) 63 (435) 19 16 38 32 25 (34) 15 (20)
4 A I, II 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
4 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
4 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
5 A I, II 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
5 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
5 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
6 A I 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
6 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
6 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
7 A I 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
7 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
7 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
A
See 7.1. Chemistry other than these listed can be used if properties are met.
B
See Fig. 1.
A1001−18
TABLE 4 Chemical Grade Composition (Maximum Percent Unless
5.5 Oxygen and nitrogen gas content tests shall be per-
Range is Given)
formedonspecimenstakenfromthe3/8Tlocationandshallbe
Grade
within the 8-in. (203-mm) midsection as shown in Fig. 1.
I II III
Element: See Table 5 .to .to
6. Materials and Manufacture
Carbon . . . 0.20 to 0.28 0.20 to 0.28
Manganese . . . 1.00 to 1.40 1.00 to 1.40
6.1 The steel shall be made by electric furnace process with
Phosphorus . . . 0.02 0.03
methods to conform to the maximum gas levels given in Table
Sulfur . . . 0.015 0.025
3. These methods may include a special refining process such Silicon . . . 0.30 to 0.60 0.30 to 0.60
Nickel . . . 1.00 to 1.30 1.00 to 1.30
as argon-oxygen-decarburization (AOD).
Chromium . . . 0.80 to 1.20 0.80 to 1.20
Molybdenum . . . 0.60 to 0.85 0.60 to 0.85
6.2 Heat treatment procedure shall be reported to the pur-
Aluminum . . . 0.03 0.07
chaserbythesupplierforthespecifiedsectionrange,class,and
Residual Elements: See Table 5
AA
grade.
Zirconium . . .
AA
Copper . . .
6.2.1 Multiple austenitizing is permitted.
AA
Titanium . . .
6.2.2 Multiple tempering is permitted. The minimum final
AA
Tungsten . . .
AA
tempering temperature shall not be less than 1100°F (593°C).
Vanadium . . .
AA
Columbium . . .
Post-weld heat treatment shall not be less than 1050°F
AA
Boron . . .
(566°C).
Total Content of . . . 0.60 0.60
Residual Elements
6.3 Test block(s) may be heat treated separately from the
A
Reported for information only.
castings they represent.
6.3.1 Test block(s) shall be heat treated in the same produc-
tion heat treat equipment, in the same facility, and to the same
TABLE 5 Element Tolerance Ranges and Maximum Limits for
procedure as the castings to be produced. Test block(s) are
Alternate Chemistries
excluded from post-weld heat treatment (see 12.2.9).
Average of
Maximum Range Maximum Limit
6.3.2 The test block(s) tempering temperature shall be
Element Declared Range,
(%) (%)
within 625°F (14°C) of the casting tempering temperature.
(%)
Carbon All 0.08 0.35
6.4 Heat treatment charts showing time and temperature
Manganese <1.00 0.30 .
shall be prepared and held available for inspection by the
$1.00 0.40 .
Phosphorus All . . . 0.02
purchaser.
Sulfur All . . . 0.015
Nickel <1.50 0.30 .
7. Chemical Composition
$1.50 0.50 .
Chromium <1.50 0.40 .
7.1 Supplier shall select the casting chemistry grade from
$1.50 0.50 .
Table 1 for the section range and class specified by the
Molybdenum All 0.25 . . .
purchaser.
Aluminum All 0.04 0.06
Vanadium All 0.10 . . .
7.1.1 Chemical composition shall conform to Table 4 for
A
Copper . . .
Grades II and III.
A
Titanium . . .
A
7.1.2 Grade I designates the use of an alternate chemistry
Columbium . . .
A
Zirconium . . .
selected by the supplier.Alternate chemistries shall conform to
A
Nitrogen . . .
the allowable element ranges and limits given in Table 5.
A
Reported for information only.
7.2 A product analysis shall be made for specification
conformance. The product analysis shall be performed on a
specimen taken
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A1001 − 01 (Reapproved 2015) A1001 − 18
Standard Specification for
High Strength High-Strength Steel Castings in Heavy
Sections
This standard is issued under the fixed designation A1001; 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 Scope*
1.1 This specification covers cast alloy steels in the normalized and tempered or quenched and tempered condition, in section
sizes through 37 in. (940 mm), suitable for high strain high-strain gradient conditions such as those encountered in hooks, shackles,
support frames, and other lifting devices. The classes of steel in this specification are weldable only with qualified procedures.
1.2 Section range and class selection will depend on design and service conditions. Users should note that this specification
contemplates mechanical property gradients.
1.3 The values stated in inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are
shown in brackets.parentheses. 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 non-conformitiesnonconformance with the
specification. Inch-pound units are applicable for material ordered to this Specificationspecification and SI units for material
ordered to this Specification.specification.
1.4 If, by agreement, castings are to be supplied in a partially completed condition, that is, all of the provisions of the product
specification have not been filled, then the material marking (see Section 15) and certification (see Section 14) are to reflect the
extent to which the product specification requirements have been met.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A609/A609M Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof
A703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
E94E94/E94M Guide for Radiographic Examination Using Industrial Radiographic Film
E165E165/E165M Practice for Liquid Penetrant Examination for General Industry
E709 Guide for Magnetic Particle Testing
E1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by
Various Combustion and Inert Gas Fusion Techniques
E1447 Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by Inert Gas Fusion Thermal
Conductivity/Infrared Detection Method
E1806 Practice for Sampling Steel and Iron for Determination of Chemical Composition
2.2 Manufacturers Standardization of the Value and Fittings Industry Standards:Standard:
MSS SP-55 Quality Standard for Steel Castings – Visual Castings—Visual Method
This specification is under the jurisdiction of ASTM Committee A01 onSteel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.18
on Castings.
Current edition approved Dec. 15, 2015Sept. 1, 2018. Published December 2015September 2018. Originally approved in 1999. Last previous edition approved in 20102015
as A1001 – 01 (2010).(2015). DOI: 10.1520/A1001-01R15.10.1520/A1001-18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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.
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A1001 − 18
3. General Conditions for Delivery
3.1 Materials furnished to this Specificationspecification shall conform to the applicable requirements of Specification
A703/A703M, including the supplementary requirements that are indicated on the purchase order.
3.2 Terminology and test methods shall be in accordance with Test Methods and Definitions A370.
3.3 In the case of conflict between requirements of this specification and referenced specifications, the former shall prevail.
4. Ordering Information
4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification. Such requirements to be considered include, but are not limited to, the following:
4.1.1 A description of the casting by pattern number or a fully dimensional and toleranced drawing,
4.1.2 ASTM designation and year of issue,
4.1.3 Section range and class of steel (see Table 1),
4.1.4 Definition of inspection methods, extent of examination, frequency, casting quality zones, and acceptance criteria (see
Section 11).),
4.1.5 Product marking locations (see Section 15),
4.1.6 Certification report options (see Section 14),
4.1.7 Options in the specification (see 1.4 and 11.6), and
4.1.8 The supplementary requirements desired.
5. Test Block Requirements
5.1 The supplier shall produce a minimum of one test block for each heat.
5.2 Test block configuration shall be in accordance with Fig. 1. A standard draft angle is permitted over the length “L” of the
test block, provided the minimum cylinder diameter is greater than “T” given in Table 2.
5.3 Test block size shall be in accordance with Table 2 for specified section range. The section range selection made by the
purchaser (see 4.1.3) should consider casting section size and geometry, service conditions, mechanical property correlations
developed by the supplier, or other important factors.
5.4 Tension and Charpy impact tests shall be performed on specimens taken from both the 1/8T and 3/8T locations and shall
be oriented within the 8-in. (203-mm) midsection as shown in Fig. 1.
5.5 Oxygen and nitrogen gas content tests shall be performed on specimens taken from the 3/8T location and shall be within
the 8 in. (203 mm) 8-in. (203-mm) midsection as shown in Fig. 1.
TABLE 1 Required Mechanical Properties
Tensile Strength
Chemistry Yield Strength, min ksi Elongation, 2 in (50 Reduction of Area, Charpy V-Notch, Min
Strength, min
A
Grade (MPa) at 0.2 % Offset mm) or 4d, min, % min % Average, ft-lb (J)
ksi (MPa)
Section
B B B B B B B B B B
Class T/8 3T/8 T/8 3T/8 T/8 3T/8 T/8 3T/8 T/8 3T/8
Range
1 A I, II 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
1 B I 105 (725) 95 (655) 85 (585) 76 (525) 15 11 30 22 25 (34) 15 (20)
1 C I 90 (620) 80 (550) 70 (485) 63 (435) 17 13 34 26 25 (34) 15 (20)
2 A I 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
2 B I 105 (725) 95 (655) 85 (585) 76 (525) 16 12 32 24 25 (34) 15 (20)
2 C I 90 (620) 80 (550) 70 (485) 63 (435) 18 14 36 28 25 (34) 15 (20)
3 A I, III 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
3 B I 105 (725) 95 (655) 85 (585) 76 (525) 17 13 34 26 25 (34) 15 (20)
3 C I 90 (620) 80 (550) 70 (485) 63 (435) 19 16 38 32 25 (34) 15 (20)
4 A I, II 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
4 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
4 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
5 A I, II 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
5 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
5 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
6 A I 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
6 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
6 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
7 A I 110 (760) 100 (690) 90 (620) 80 (550) 18 15 36 30 25 (34) 15 (20)
7 B I 105 (725) 95 (655) 85 (585) 76 (525) 19 16 38 32 25 (34) 15 (20)
7 C I 90 (620) 80 (550) 70 (485) 63 (435) 21 18 42 36 25 (34) 15 (20)
A
See 7.1. Chemistry other than these listed can be used if properties are met.
B
See Fig. 1.
A1001 − 18
FIG. 1 Test Block Configuration
TABLE 2 Section Range Definition and Test Block Dimensions
A
Section Size, in (mm) Test Block Dimensions, in (mm)
Section
Range
Over Not Over T L
1 3 (76) 5 (127) 4 (102) 8 (203)
2 5 (127) 7 (178) 6 (152) 8 (203)
3 7 (178) 11 (279) 9 (229) 9 (229)
4 11 (279) 15 (381) 13 (330) 13 (330)
5 15 (381) 21 (533) 18 (457) 18 (457)
6 21 (533) 29 (737) 25 (635) 25 (635)
7 29 (737) 37 (940) 33 (813) 33 (813)
A
See Fig. 1.
6. Materials and Manufacture
6.1 The steel shall be made by electric furnace process with methods to conform to the maximum gas levels given in Table 3.
These methods may include a special refining process such as argon-oxygen-decarburization (AOD).
6.2 Heat treatment procedure shall be reported to the purchaser by the supplier for the specified section range, class, and grade.
6.2.1 Multiple austenitizing is permitted.
6.2.2 Multiple tempering is permitted. The minimum final tempering temperature shall not be less than 1100°F (593°C). Post
weld 1100 °F (593 °C). Post-weld heat treatment shall not be less than 1050°F (566°C).1050 °F (566 °C).
6.3 Test block(s) may be heat treated separately from the castings they represent.
6.3.1 Test block(s) shall be heat treated in the same production heat treat equipment, in the same facility, and to the same
procedure as the castings to be produced. Test block(s) are excluded from post weld post-weld heat treatment (see 12.2.9).
6.3.2 The test block(s) tempering temperature shall be within 6 25°F (14°C) 625 °F (14 °C) of the casting tempering
temperature.
6.4 Heat treatment charts showing time and temperature shall be prepared and held available for inspection by the purchaser.
7. Chemical Composition
7.1 Supplier shall select the casting chemistry Gradegrade from Table 1 for the section range,range and class specified by the
purchaser.
TABLE 3 Maximum Gas Content Levels
Oxygen Oxygen
Section Nitrogen, Oxygen,
Analysis Analysis
Range ppm ppm
A
Tolerance, ppm Limit, ppm
1 110 100 30 130
2 110 100 30 130
3 100 90 27 117
4 100 90 27 117
5 90 80 24 104
6 80 70 21 91
7 70 60 18 78
A
Specification compliance level is average value of three determinations,
determinations; see 10.3.
A1001 − 18
7.1.1 Chemical composition shall conform to Table 4 for Grades II and III.
7.1.2 Grade I designates the use of an alternate chemistry selected by the supplier. Alternate chemistries shall conform to the
allowable element ranges and limits given in Table 5.
7.2 A product analysis shall be made for specification conformance. The product analysis shall be performed on a specimen
taken from the test block(s) in Section 5 and shall be from the 3/8T location and shall be within the 8 in. (203 mm) 8-in. (203-mm)
midsection as shown in Fig. 1. The supplier shall perform the product analysis in addition to any other process control analysis.
7.3 Retests for conformance are permitted in accordance with Section 13.
8. Tension Test
8.1 Tension tests shall be performed on test specimens taken from test block(s) as determined in Section 5.
8.1.1 One tension test specimen is required at each of the 1/8T and 3/8T locations and shall be oriented within the 8 in. (203
mm) 8-in. (203-mm) midsection as shown in Fig. 1.
8.1.2 Tension test specimens shall be machined to the form and dimension shown in Fig. 4 of Test Methods and Definitions
A370 and tested in accordance with those test methods.
8.2 Mechanical properties shall conform to the requirements given in Table 1.
8.3 Retests for conformance are permitted in
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