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ASTM B494/B494M-03

(Specification)

Standard Specification for Primary Zirconium

Standard Specification for Primary Zirconium

SCOPE
1.1 This specification covers two grades of zirconium metal commonly designated as sponge or chunklets, but may also take other forms. This specification does not include crystal bar zirconium.
1.2 Unless a single unit is used, for example corrosion mass gain in mg/dm2, the values stated in either inch-pound 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. SI values cannot be mixed with inch-pound values.
1.3 The following precautionary caveat pertains only to the test method portions of this specification. 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.

General Information

Status
Historical
Publication Date
09-May-2003
ICS
77.120.99 - Other non-ferrous metals and their alloys
Technical Committee
B10 - Reactive and Refractory Metals and Alloys
Drafting Committee
B10.02 - Zirconium and Hafnium
Current Stage
Ref Project

Relations

Replaces
ASTM B494/B494M-01 - Standard Specification for Primary Zirconium
Effective Date
10-May-2003
Replaced By
ASTM B494/B494M-08 - Standard Specification for Primary Zirconium
Effective Date
01-Apr-2008

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B 494/B 494M – 03
Standard Specification for
1
Primary Zirconium
This standard is issued under the fixed designation B 494/B 494M; 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
at one time.
1.1 This specification covers two grades of zirconium metal
3.1.5 weld fittings—definition is to be mutually agreed upon
commonly designated as sponge or chunklets, but may also
between manufacturer and the purchaser.
takeotherforms.Thisspecificationdoesnotincludecrystalbar
zirconium.
4. Classification
1.2 Unless a single unit is used, for example corrosion mass
2
4.1 Primary zirconium is furnished in two grades:
gain in mg/dm , the values stated in either inch-pound or SI
4.1.1 Grade R60702—Unalloyed zirconium.
units are to be regarded separately as standard. The values
4.1.2 Grade R60703—Unalloyed zirconium for metallurgi-
stated in each system are not exact equivalents; therefore each
cal alloying.
system must be used independently of the other. SI values
cannot be mixed with inch-pound values.
5. Ordering Information
1.3 The following precautionary caveat pertains only to the
5.1 Orders for material under this specification shall include
test method portions of this specification. This standard does
the following information:
not purport to address all of the safety concerns, if any,
5.1.1 Quantity (weight),
associated with its use. It is the responsibility of the user of this
5.1.2 Name of material (zirconium sponge or chunklet),
standard to establish appropriate safety and health practices
5.1.3 Grade number (see 4.1),
and determine the applicability of regulatory limitations prior
5.1.4 ASTM designation and year of issue,
to use.
5.1.5 Check analysis (see 7.2),
2. Referenced Documents 5.1.6 Sampling of small blends (see 8.1.1),
5.1.7 Inspection (see 11.1),
2.1 ASTM Standards:
5.1.8 Certification report (Section 13),
E 29 Practice for Using Significant Digits in Test Data to
2 5.1.9 Product marking (Section 15),
Determine Conformance with Specifications
5.1.10 Packaging (Section 16),
3. Terminology 5.1.11 Oxygen limits, when needed (Table 1), and
5.1.12 Additions to the specification and supplementary
3.1 Lot Definitions:
requirements, as required.
3.1.1 castings—a lot shall consist of all castings produced
from the same pour.
NOTE 1—Atypical ordering description is as follows: 3000 lb (2000kg)
3.1.2 ingot—no definition required.
zirconium sponge, ASTM B 494 - 01, Grade R60703.
3.1.3 rounds, flats, tubes, and wrought powder metallurgical
6. Materials and Manufacture
products (single definition, common to nuclear and non-
nuclear standards)—a lot shall consist of a material of the 6.1 Zirconium metal is usually prepared by reduction of
zirconium tetrachloride, and it gets its physical characteristics
same size, shape, condition, and finish produced from the same
ingot or powder blend by the same reduction schedule and the from the processes involved in production. These characteris-
tics may be expected to vary greatly with manufacturing
same heat treatment parameters. Unless otherwise agreed
between manufacturer and purchaser, a lot shall be limited to methods. This specification, however, is not limited to metal
prepared by reduction of tetrachloride or to material of any
the product of an 8 h period for final continuous anneal, or to
a single furnace load for final batch anneal. specific physical form.
6.2 Only virgin zirconium metal, in identified, uniform,
well-mixed blends, shall be supplied under this specification.
1
This specification is under the jurisdiction of ASTM Committee B10 on
Reactive and Refractory Metals and Alloys and is the direct responsibility of
7. Chemical Composition
Subcommittee B10.02 on Zirconium and Hafnium.
Current edition approved May 10, 2003. Published May 2003. Originally
7.1 The material shall conform to the requirements as to
approved in 1969. Last previous edition approved in 2001 as B 494/B 494M - 01.
chemical composition prescribed in Table 1.
2
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B 494/B 494M – 03
TABLE 1 Chemical Requirements
9.2.2 If the results of any tests of any lot do not conform to
Composition, % the requirements specified, retests shall be made on additional
Element
samples of double the original number from the same lot. Each
Grade R60702 Grade R60703
oftheretestvaluesshallconformtotherequirementsspecified.
Zirconium + h
...

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1.1 This specification covers one grade of virgin zirconium metal commonly designated as sponge because of its porous, sponge-like texture, but it may also take other forms such as chunklets, suitable for use in nuclear applications.  
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1.3 Intended Use—Parts made from this material are intended for uses such as weights or counter-balances in static or dynamic balancing, high-speed rotating inertia members, radiation shielding, hypervelocity impact, and vibration-damping applications. In selecting the appropriate alloy for a given application, it is important to note that as the tungsten content of the alloy is increased, stiffness, radiation attenuation, and density increase with an accompanying decrease in attainable ductility.  
1.4 Special Applications—For particular applications, properties or requirements other than those specified in Sections 5, 6, and 7 of this specification may be important. These alloys may contain elements which make them weakly ferromagnetic. Where freedom from magnetic response is required, this should be specified in the purchase order. Class 4 is not available in a non-magnetic grade. For purposes of this specification, non-magnetic material is defined as material having a maximum magnetic permeability of 1.05 (see Test Method A342). Also for special applications involving large sections, methods for determining internal quality, such as mechanical testing of specimens excised from these larger sections or suitable nondestructive tests may be applied. If such part property data are required, an additional part-specific test program shall be specified in the purchase order.  
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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This specification covers two grades (Grade R60702 and Grade R60703) of zirconium metal commonly designated as sponge or chunklets, but may also take other forms. This specification does not include crystal bar zirconium. This sponge is used in non-nuclear applications. Zirconium metal is usually prepared by reduction of zirconium tetrachloride, and it gets its physical characteristics from the processes involved in production. These characteristics may be expected to vary greatly with manufacturing methods. This specification, however, is not limited to metal prepared by reduction of tetrachloride or to material of any specific physical form. Only virgin zirconium metal, in identified, uniform, well-mixed blends, shall be supplied under this specification. The material shall conform to the chemical composition requirements for zirconium, hafnium, iron, chromium, hydrogen, nitrogen, carbon, and oxygen. The material shall be subjected to a number of chemical tests as required in this specification.
SCOPE
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5.1 This test method is primarily used as an acceptance test for products of zirconium, hafnium, and their alloys. This standard has been widely used in the development of new alloys, heat treating practices, and for evaluation of welding techniques.  
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1.4 Unless a single unit is used, for example corrosion mass gain in mg/dm2, the values stated in either inch-pound 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. SI values cannot be mixed with inch-pound values.  
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SCOPE
1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 80 %, by weight, with the balance being substantially graphite.  
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This specification covers refined rhodium as sponge and powder in three grades, namely: Grade 99.80, Grade 99.90, and Grade 99.95. The material may be produced by any refining process that will yield a product capable of meeting the chemical composition requirements specified for rhodium, platinum, iridium, palladium, ruthenium, lead, tin, zinc, arsenic, bismuth, cadmium, iron, silicon, silver, gold, copper, nickel, tellurium, magnesium, calcium, aluminum, chromium, manganese, antimony, cobalt, and boron determined by chemical analysis. Sampling requirements for the metal sponge and powder are detailed.
SCOPE
1.1 This specification covers refined rhodium as sponge and powder in three grades as follows:  
1.1.1 Grade 99.80—Rhodium having a purity of 99.80 %,  
1.1.2 Grade 99.90—Rhodium having a purity of 99.90 %, and  
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1.4 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.

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This specification covers refined platinum as sponge, cast bar, and wrought forms in two grades as follows: Grade 99.95 and Grade 99.99. The refined platinum shall conform to the required chemical composition for platinum, rhodium, palladium, ruthenium, iridium, gold, silver, lead, tin, zinc, iron, manganese, copper, silicon, calcium, magnesium, aluminum, nickel, chromium, antimony, arsenic, bismuth, tellurium, cadmium, and molybdenum. The metal may be produced by refining process that yields a product capable of meeting the chemical requirements of this specification.
SCOPE
1.1 This specification covers refined platinum as sponge, cast bar, and wrought forms (Note 1) in two grades as follows:  
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1.1.2 Grade 99.99—Platinum having a purity of 99.99 % min.  
Note 1: Other forms of unfabricated platinum of commerce are not to be excluded under this specification.
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This specification defines the criteria for the chemical composition and other requirements (including physical properties, microstructure, superficial hardness, and specific resistance ) for silver-graphite brushes for sliding electrical contacts. The percentage of silver, graphite, ash in graphite, and total metal impurities are prescribed. The minimum acceptable values for the physical properties such as density, determined by measurement and weight method, and shear strength are given. Typical Rockwell hardness and specific resistance for the material are also specified.
SCOPE
1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 75 weight % with the balance being substantially graphite.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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