Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing and Other Applications, for Low-Temperature Service

ABSTRACT
This specification covers carbon and alloy steel castings for pressure-containing and other applications intended primarily for petroleum and gas pipelines in areas subject to low-ambient temperatures. Castings shall be heat treated by normalizing and tempering or liquid quenching and tempering. The steel shall be made by the electric furnace process or other primary processes. Heat and product analyses shall be performed on the material and the chemical composition shall conform to the prescribed values for carbon, manganese, nickel, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, also for residual elements like vanadium, copper, nickel, chromium, molybdenum, and tungsten. Tensile test shall be made and the mechanical properties thus determined shall conform to the required tensile strength, yield strength, elongation, and reduction of area. Charpy V-notch testing shall be done to determine the impact properties on each heat by specimen type like coupons representing the weld deposits and coupons representing the heat-affected zone. Impact properties shall also be determined on both the heat-affected zone of the base metal and the weld metal of the welding procedure qualification test. After machining, each pressure-containing casting shall undergo hydrostatic pressure testing and shall not leak.
SCOPE
1.1 This specification covers carbon and alloy steel castings for pressure-containing and other applications intended primarily for petroleum and gas pipelines in areas subject to low-ambient temperatures. Castings shall be heat treated by normalizing and tempering or liquid quenching and tempering. All classes are weldable under proper conditions. Hardenability of some grades may limit usable section size.  
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. 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-conformance with the standard.  
1.2.1 Unless the order specifies an “M” designation, the material shall be furnished to inch-pound units.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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ASTM A757/A757M-15 - Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing and Other Applications, for Low-Temperature Service
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REDLINE ASTM A757/A757M-15 - Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing and Other Applications, for Low-Temperature Service
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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:A757/A757M −15
Standard Specification for
Steel Castings, Ferritic and Martensitic, for Pressure-
Containing and Other Applications, for Low-Temperature
1
Service
This standard is issued under the fixed designationA757/A757M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* General Requirements, for Pressure-Containing Parts
A1067/A1067MSpecification for Test Coupons for Steel
1.1 This specification covers carbon and alloy steel castings
Castings
forpressure-containingandotherapplicationsintendedprimar-
3
2.2 American Society of Mechanical Engineers:
ily for petroleum and gas pipelines in areas subject to low-
ASME Boiler and Pressure Vessel Code
ambient temperatures. Castings shall be heat treated by nor-
2.3 Manufacturers Standardization Society of the Valve and
malizingandtemperingorliquidquenchingandtempering.All
4
Fittings Industry Standards:
classes are weldable under proper conditions. Hardenability of
MSS SP-55Quality Standard for Steel Castings for Valves,
some grades may limit usable section size.
Flanges, Fittings, and Other Piping Components - Visual
1.2 The values stated in either inch-pound units or SI units
Method for Evaluation of Surface Irregularities
are to be regarded separately as standard. The values stated in
each system are not exact equivalents; therefore, each system
3. Terminology
must be used independently of the other. Combining values
3.1 Definitions:
from the two systems may result in non-conformance with the
3.1.1 Definitions in Specification A703/A703M are appli-
standard.
cable to this specification.
1.2.1 Unless the order specifies an “M” designation, the
3.1.2 Definition of nominal thickness, T, applies to
material shall be furnished to inch-pound units.
quenched and tempered castings with a thickness exceeding 2
1.3 This standard does not purport to address all of the
in. [50 mm]. Nominal thickness, T, is the maximum thickness
safety concerns, if any, associated with its use. It is the
of the pressure-containing wall of the casting exclusive of
responsibility of the user of this standard to establish appro-
padding added for directional solidification, flanges,
priate safety and health practices and determine the applica-
appendages, and sections designated by the designer as non-
bility of regulatory limitations prior to use.
critical.
2. Referenced Documents
4. General Conditions for Delivery
2
2.1 ASTM Standards:
4.1 Except for investment castings, castings furnished to
A488/A488MPractice for Steel Castings, Welding, Qualifi-
this specification shall be in accordance with the requirements
cations of Procedures and Personnel
of Specification A703/A703M, including any supplementary
A703/A703M Specification for Steel Castings, General
requirementsthatareindicatedinthepurchaseorder.Failureto
Requirements, for Pressure-Containing Parts
comply with the general requirements of Specification A703/
A985/A985MSpecification for Steel Investment Castings
A703M constitutes nonconformance with this specification. In
case of conflict between the requirements of this specification
and Specification A703/A703M, this specification shall pre-
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
vail.
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
Current edition approved July 1, 2015. Published August 2015. Originally
3
approved in 1978. Last previous edition approved in 2010 as A757/A757M–10. Available from American Society of Mechanical Engineers (ASME), ASME
DOI: 10.1520/A757_A757M-15. International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.asme.org.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
Standards volume information, refer to the standard’s Document Summary page on Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
the ASTM website. hq.com.
*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
1

---------------------- Page: 1 ----------------------
A757/A757M−15
TABLE 1 Chemical Requirements (Maximum Percent Unless Range is Given)
D1N1 D1Q1
Grade A1Q A2Q B2N B2Q B3N B3Q B4N B4Q C1Q D1N2 D1Q2 E1Q E2N, E2Q E3N
D1N3 D1Q3
Carbon- Nickel Nickel Martensitic
Nickel
...

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: A757/A757M − 10 A757/A757M − 15
Standard Specification for
Steel Castings, Ferritic and Martensitic, for Pressure-
Containing and Other Applications, for Low-Temperature
1
Service
This standard is issued under the fixed designation A757/A757M; 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 carbon and alloy steel castings for pressure-containing and other applications intended primarily
for petroleum and gas pipelines in areas subject to low-ambient temperatures. Castings shall be heat treated by normalizing and
tempering or liquid quenching and tempering. All classes are weldable under proper conditions. Hardenability of some grades may
limit usable section size.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. 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-conformance with the standard.
1.2.1 Unless the order specifies an “M” designation, the material shall be furnished to inch-pound units.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
A703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A985/A985M Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts
A1067/A1067M Specification for Test Coupons for Steel Castings
3
2.2 American Society of Mechanical Engineers:
ASME Boiler and Pressure Vessel Code
4
2.3 Manufacturers Standardization Society of the Valve and Fittings Industry Standards:
MSS SP-55 Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components - Visual Method
for Evaluation of Surface Irregularities
3. Terminology
3.1 Definitions:
3.1.1 Definitions in Test Methods and Definitions Specification A370A703/A703M and Terminology A941are applicable to this
specification.
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 A01.18
on Castings.
Current edition approved Nov. 1, 2010July 1, 2015. Published December 2010August 2015. Originally approved in 1978. Last previous edition approved in 20042010
as A757/A757M – 00 (2004).A757/A757M – 10. DOI: 10.1520/A757/A757M-10.10.1520/A757_A757M-15.
2
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.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
4
Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
*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
1

---------------------- Page: 1 ----------------------
A757/A757M − 15
TABLE 1 Chemical Requirements (Maximum Percent Unless Range is Given)
D1N1 D1Q1
Grade A1Q A2Q B2N B2Q B3N B3Q B4N B4Q C1Q D1N2 D1Q2 E1Q E2N, E2Q E3N
D1N3 D1Q3
Carbon- Nickel Nickel Martensitic
Nickel Chromium
1 1 1
Type Carbon Manga- 2 ⁄2 Nickel 3 ⁄2 Nickel 4 ⁄2 Nickel Chromium Chromium Chromium
Molybdenum Molybdenum
nese Molybdenum Molybdenum Nickel
A
Carbon 0.30 0.25 0.25 0.15 0.15 0.25 0.20 0.22 0.20 0.06
A
Manganese 1.00 1.20 0.50/0.80 0.50/0.80 0.50/0.80
...

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