ASTM B493-01(2003)
(Specification)Standard Specification for Zirconium and Zirconium Alloy Forgings
Standard Specification for Zirconium and Zirconium Alloy Forgings
ABSTRACT
This specification covers three grades of zirconium and zirconium alloy forgings. The forgings shall be formed with conventional forging equipment normally found in primary ferrous and nonferrous metal plants. The forgings are furnished in three grades as Grade R60702, Grade R60702, and Grade R60705. Forgings shall be furnished in the annealed conditions. The material shall conform to the requirements as to chemical composition and tensile properties prescribed. Two tension tests shall be made from each lot. Two chemistry tests for hydrogen and nitrogen content shall be made from each lot of finished product. If the results of any tests of any lot do not conform to the requirements specified, retests shall be made on additional forgings of double the original number of the same lot, each of which shall conform to the requirements specified.
SCOPE
1.1 This specification² covers three grades of zirconium and zirconium alloy forgings.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following safety hazards caveat pertains only to the test method portion, Section 12, of this specification: This standard does not purport to address all of the safety problems, 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.
General Information
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B 493 – 01 (Reapproved 2003)
Standard Specification for
Zirconium and Zirconium Alloy Forgings
This standard is issued under the fixed designation B 493; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.4 sponge—a lot shall consist of a single blend produced
2 at one time.
1.1 This specification covers three grades of zirconium and
3.1.5 weld fittings—definition is to be mutually agreed upon
zirconium alloy forgings.
between manufacturer and the purchaser.
1.2 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
4. Classification
information only.
4.1 The forgings are furnished in three grades as follows:
1.3 The following safety hazards caveat pertains only to
4.1.1 Grade R60702—Unalloyed zirconium.
the test method portion, Section 12, of this specification: This
4.1.2 Grade R60704—Zirconium-tin alloy.
standard does not purport to address all of the safety problems,
4.1.3 Grade R60705—Zirconium-niobium alloy.
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
5. Ordering Information
practices and determine the applicability of regulatory limita-
5.1 Orders for material under this specification shall include
tions prior to use.
the following information:
2. Referenced Documents 5.1.1 Quantity (weight and number of pieces),
5.1.2 Name of material (zirconium forgings),
2.1 ASTM Standards:
5.1.3 Finish (Section 9),
E 8 Test Methods forTensionTesting of Metallic Materials
5.1.4 Dimension (diameter, thickness, length, width, or as
3. Terminology specified in appropriate drawings),
5.1.5 ASTM designation and year of issue,
3.1 Lot Definitions:
5.1.6 Grade number (see 3.1), and
3.1.1 castings—a lot shall consist of all castings produced
5.1.7 Additions to the specification and supplementary re-
from the same pour.
quirements, if required.
3.1.2 ingot—no definition required.
3.1.3 rounds, flats, tubes, and wrought powder metallurgical
NOTE 1—A typical ordering description is as follows: 8000-lb zirco-
products (single definition, common to nuclear and non-
nium forgings, mechanically descaled 10 by 12 by 12-in. rectangular bar,
ASTM B 493, dated __, Grade R60702.
nuclear standards)—a lot shall consist of a material of the
same size, shape, condition, and finish produced from the same
6. Materials and Manufacture
ingot or powder blend by the same reduction schedule and the
6.1 The forgings shall be formed with conventional forging
same heat treatment parameters. Unless otherwise agreed
equipment normally found in primary ferrous and nonferrous
between manufacturer and purchaser, a lot shall be limited to
metal plants.
the product of an 8 h period for final continuous anneal, or to
6.2 Forgings shall be furnished in the annealed conditions.
a single furnace load for final batch anneal.
7. Chemical Composition
This specification is under the jurisdiction of ASTM Committee B10 on
7.1 The material shall conform to the requirements as to
Reactive and Refractory Metals and Alloysand is the direct responsibility of
chemical composition prescribed in Table 1.
Subcommittee B10.02on Zirconium and Hafnium.
7.2 The manufacturer’s ingot analysis shall be considered
Current edition approved May 10, 2003. Published May 2003. Originally
approved in 1969. Last previous edition approved in 2001 as B 493 – 01.
the chemical analysis for forgings, except for hydrogen and
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
nitrogen, which shall be determined on the finished product.
cation SB-493 in Section II of that Code.
Annual Book of ASTM Standards, Vol 03.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B 493 – 01 (2003)
A
TABLE 1 Chemical Requirements TABLE 3 Tensile Requirements
Composition, % UNS Grade Designation
R60702 R60704 R60705
Element UNS Grade Designation
Tensile strength, min, ksi (MPa) 55 (379) 60 (413) 70 (483)
Yield strength, min, ksi (MPa) 30 (207) 35 (241) 55 (379)
R60702 R60704 R60705
Elongation in 2 in. or 50 mm, 16 14 16
Zirconium + hafnium, min 99.2 97.5 95.5
A
min, %
Hafnium, max 4.5 4.5 4.5
A
When a sub-size specimen is used, the gage length shall be as specified in
Iron + chromium 0.2 max 0.2 to 0.4 0.2 max
Test Methods E 8 for that specimen.
Tin . 1.0 to 2.0 .
Hydrogen, max 0.005 0.005 0.005
Nitrogen, max 0.025 0.025 0.025
Carbon, max 0.05 0.05 0.05 11.3.1 If any sample or specimen exhibits obvious surface
Niobium . . 2.0 to 3.0
contamination or improper preparation disqualifying it as a
Oxygen 0.16 0.18 0.18
truly representative sample, it shall be discarded and a new
A
By agreement between the purchaser and the manufacturer, analysis may be
sample or specimen substituted.
required and limits established for elements and compounds not specified in the
11.3.2 If the results of any tests of any lot do not conform to
table of chemical composition.
the requirements specified, retests shall be made on additional
forgings of double the original number from the same lot, each
7.3 When requested by the purchaser and stated in the
of which shall conform to the requirements specified.
purchase order, a check analysis for any elements listed in
12. Test Methods
Table 1 shall be made on the finished product.
7.3.1 The manufacturer’s analysis shall be considered as
12.1 Tension Tests—Conduct the tension test in accordance
verified if the check analysis confirms the manufacturer’s
with Test Methods E 8. Determine the yield strength by the
reported values within the tolerances
...
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