ASTM B495-01
(Specification)Standard Specification for Zirconium and Zirconium Alloy Ingots
Standard Specification for Zirconium and Zirconium Alloy Ingots
SCOPE
1.1 This specification covers four grades of zirconium ingots.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
1.3 The following precautionary caveat pertains only to the test method portion, Section 10, of this specification: This standard does not purport to address all safety problems 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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Designation: B 495 – 01
Standard Specification for
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Zirconium and Zirconium Alloy Ingots
This standard is issued under the fixed designation B 495; 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 4. Classification
1.1 This specification covers four grades of zirconium 4.1 The ingots are furnished in five grades as follows:
ingots. 4.1.1 Grade R60702— Unalloyed zirconium.
1.2 The values stated in inch-pound units are to be regarded 4.1.2 Grade R60703— Unalloyed zirconium, metallurgical
as the standard. The SI units given in parentheses are for grade.
information only. 4.1.3 Grade R60704— Zirconium-tin alloy.
1.3 The following precautionary caveat pertains only to the 4.1.4 Grade R60705— Zirconium-niobium alloy.
test method portion, Section 10, of this specification: This 4.1.5 Grade R60706— Zirconium-niobium alloy.
standard does not purport to address all of the safety concerns,
5. Ordering Information
if any, associated with its use. It is the responsibility of the user
5.1 Orders for materials under this specification shall in-
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita- clude the following information:
5.1.1 Quantity (weight),
tions prior to use.
5.1.2 Name of material (zirconium ingot),
2. Referenced Documents
5.1.3 Grade number (Section 4),
2.1 ASTM Standards: 5.1.4 ASTM designation and year of issue,
E 114 Practice for Ultrasonic Pulse-Echo Straight-Beam 5.1.5 Finish (Section 8), and
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Examination by the Contact Method 5.1.6 Additions to the specification and supplementary re-
quirements, if required.
3. Terminology
NOTE 1—A typical ordering description is as follows: 10 000-lb
3.1 Lot Definitions:
zirconium ingot, machine conditioned, ASTM B 495, dated __, Grade
3.1.1 castings—a lot shall consist of all castings produced
R60702.
from the same pour.
6. Materials and Manufacture
3.1.2 ingot—no definition required.
3.1.3 rounds, flats, tubes, and wrought powder metallurgical
6.1 The ingots covered by this specification shall be manu-
products (single definition, common to nuclear and non-
factured by electron beam, vacuum, or inert atmosphere
nuclear standards)—a lot shall consist of a material of the
melting in furnaces conventionally used for reactive metals.
same size, shape, condition, and finish produced from the same
7. Chemical Composition
ingot or powder blend by the same reduction schedule and the
same heat treatment parameters. Unless otherwise agreed
7.1 The material shall conform to the requirements as to
between manufacturer and purchaser, a lot shall be limited to
chemical composition prescribed in Table 1.
the product of an 8 h period for final continuous anneal, or to
7.2 When requested by the purchaser, a check analysis shall
a single furnace load for final batch anneal.
be performed for any elements listed in Table 1.
3.1.4 sponge—a lot shall consist of a single blend produced
7.2.1 The manufacturer’s analysis shall be considered as
at one time.
verified if the check analysis confirms the manufacturer’s
3.1.5 weld fittings—definition is to be mutually agreed upon
reported values within the tolerances prescribed in Table 2.
between manufacturer and the purchaser.
8. Workmanship, Finish, and Appearance
8.1 Ingots shall be conditioned by machining, grinding, or
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This specification is under the jurisdiction of ASTM Committee B10 on
surface fusion to remove gross surface and subsurface defects
Reactive and Refractory Metals and Alloys and is the direct responsibility of
detrimental to subsequent fabrication.
Subcommittee B10.02 on Zirconium and Hafnium.
Current edition approved Nov. 10, 2001. Published January 2002. Originally
published as B 495 – 69. Last previous edition B 495 – 90 (2000).
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Annual Book of ASTM Standards, Vol 03.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B 495
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TABLE 1 Chemical Requirements
Composition, %
Element UNS Grade Designation
R60702 R60703 R60704 R60705 R60706
Zirconium + hafnium, 99.2 98.0 97.5 95.5 95.5
min
Hafnium, max 4.5 4.5 4.5 4.5 4.5
Iron + chromium 0.20 max . 0.20 to 0.40 0.2 max 0.2 max
Tin . . 1.00 to 2.00 . .
Hydrogen, max 0.004 . 0.005 0.005 0.005
Nitrogen, max 0.020 . 0.025 0.025 0.025
Carbon, max 0.05 . 0.050 0.050 0.050
Niobium . . . 2.0 to 3.0 2.0 to 3.0
Oxygen, max 0.16 . 0.18 0.18 0.16
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By agreement between the purchaser and the manufacturer, analysis may be acquired and limits established for elements and
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