ASTM B752/B752M-22

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:B752/B752M −22
Standard Specification for
Castings, Zirconium-Base, Corrosion Resistant, for General
1
Application
This standard is issued under the fixed designation B752/B752M; 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 E446 Reference Radiographs for Steel Castings Up to 2 in.
(50.8 mm) in Thickness
1.1 Thisspecificationcoverszirconiumandzirconium-alloy
castings for general corrosion-resistant and industrial applica-
3. Terminology
tions.
3.1 Definitions of Terms Specific to This Standard:
1.2 The values stated in either inch-pound units or SI units
3.1.1 pour, n—shall consist of all material melted and cast at
are to be regarded separately as standard. Within the text, the
one time.
SI units are shown in brackets. The values stated in each
system are not exact equivalents; therefore, each system shall
3.2 Lot Definitions:
be used independently of each other. Combining values from 3.2.1 castings, n—a lot shall consist of all castings produced
the two systems may result in nonconformance with this
from the same pour.
specification.
4. Ordering Information
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.1 Orders for castings to this specification shall include the
ization established in the Decision on Principles for the
following, as required to describe the requirements adequately.
Development of International Standards, Guides and Recom-
4.1.1 Description of the castings by pattern number or
mendations issued by the World Trade Organization Technical
drawing (dimensional tolerances shall be included on the
Barriers to Trade (TBT) Committee.
casting drawing),
4.1.2 Quantity,
2. Referenced Documents
4.1.3 Grade designation (see Table 1),
2
2.1 ASTM Standards:
4.1.4 Options in the specification, and
A802/A802M Practice for Steel Castings, Surface Accep-
4.1.5 Supplementary requirements desired, including the
tance Standards, Visual Examination
standards of acceptance.
E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
5. Materials and Manufacture
E10 Test Method for Brinell Hardness of Metallic Materials
5.1 Material for this specification shall be melted by con-
E18 Test Methods for Rockwell Hardness of Metallic Ma-
ventional processes used for reactive metals. Typical methods
terials
include the consumable electrode and inductoslag melting
E23 Test Methods for Notched Bar Impact Testing of Me-
processes.
tallic Materials
E94 Guide for Radiographic Examination Using Industrial
6. Chemical Composition
Radiographic Film
E165 Practice for Liquid Penetrant Testing for General 6.1 Pour Analysis—An analysis of each pour shall be made
Industry
by the producer from a sample such as a casting or test bar that
is representative of the pour. The chemical composition deter-
1
This specification is under the jurisdiction of ASTM Committee B10 on
mined shall conform to the requirements specified for the
Reactive and Refractory Metals and Alloys and is the direct responsibility of
relevant grade in Table 1.
Subcommittee B10.02 on Zirconium and Hafnium.
6.1.1 The elements listed in Table 1 are intentional alloying
Current edition approved April 1, 2022. Published April 2022. Originally
additions of elements which are inherent to the manufacture of
approved in 1985. Last previous edition approved in 2018 as B752/B752M – 18.
DOI: 10.1520/B0752_B0752M-22.
primaryzirconium,zirconiumsponge,millproductorcastings.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1.1.1 Elements other than those listed in Table 1 are
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
deemed to be capable of occurring in the grades listed in Table
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 1 by and only by way of unregulated or unanalyzed scrap
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B752/B752M−22
A
TABLE 1 Chemical Requirements
7. Heat Treatment
Composition, %
7.1 Unless otherwise specified in the contract, all castings
UNS Grade Designation
willbesuppliedintheas-castconditionexceptwhenpost-weld
R61702 R61704 R61705
heat treatment is required.
Zirconium and hafnium, 98.8 97.1 95.1
min.
7.2 If post-weld heat treatment is required, it shall consist of
H
...