Standard Specification for Iron-Nickel-Cobalt Alloys for Metal-to-Ceramic Sealing Applications

ABSTRACT
This specification covers the property requirements and corresponding test methods for two iron-nickel-cobalt alloys in the forms of wire, rod, bar, strip, sheet, and tubing, intended primarily for brazed metal-to-ceramic seals with alumina ceramics, for vacuum electronic applications. The two alloys covered here are UNS K94630 that contains nominally 29 % nickel, 17 % cobalt, and 53 % iron, and UNS K94620 that contains nominally 27 % nickel, 25 % cobalt and 48 % iron. When tested, the alloys shall comply to specified requirements for chemical composition, surface finish, temper, grain size, tensile strength, hardness, inclusion content, thermal expansion, transformation, and dimensions.
SCOPE
1.1 This specification covers two iron-nickel-cobalt alloys, the former, (UNS No. K94630), containing nominally 29 % nickel, 17 % cobalt, and 53 % iron, the latter, (UNS No. K94620), nominally 27 % nickel, 25 % cobalt and 48 % iron, in the forms of wire, rod, bar, strip, sheet, and tubing, intended primarily for brazed metal-to-ceramic seals with alumina ceramics, for vacuum electronic applications. Unless otherwise indicated, all articles apply to both alloys.
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.
The following hazard caveat pertains only to the test method portion, Sections and 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.

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ASTM F1466-99(2005) - Standard Specification for Iron-Nickel-Cobalt Alloys for Metal-to-Ceramic Sealing Applications
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F1466 – 99 (Reapproved 2005)
Standard Specification for
Iron-Nickel-Cobalt Alloys for Metal-to-Ceramic Sealing
1
Applications
This standard is issued under the fixed designation F1466; 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.
1. Scope E45 TestMethodsforDeterminingtheInclusionContentof
Steel
1.1 This specification covers two iron-nickel-cobalt alloys,
E92 Test Method for Vickers Hardness of Metallic Materi-
the former, (UNS No. K94630), containing nominally 29%
als
nickel, 17% cobalt, and 53% iron, the latter, (UNS No.
E112 Test Methods for Determining Average Grain Size
K94620), nominally 27% nickel, 25% cobalt and 48% iron,
E140 Hardness Conversion Tables for Metals Relationship
in the forms of wire, rod, bar, strip, sheet, and tubing, intended
Among Brinell Hardness, Vickers Hardness, Rockwell
primarily for brazed metal-to-ceramic seals with alumina
Hardness, Superficial Hardness, Knoop Hardness, and
ceramics,forvacuumelectronicapplications.Unlessotherwise
Scleroscope Hardness
indicated, all articles apply to both alloys.
E228 Test Method for Linear Thermal Expansion of Solid
1.2 The values stated in inch-pound units are to be regarded
Materials With a Push-Rod Dilatometer
as the standard. The values given in parentheses are for
E354 Test Methods for Chemical Analysis of High-
information only.
Temperature, Electrical, Magnetic, and Other Similar Iron,
1.3 The following hazard caveat pertains only to the test
Nickel, and Cobalt Alloys
method portion, Sections 14 and 16 of this specification. This
E1019 Test Methods for Determination of Carbon, Sulfur,
standarddoesnotpurporttoaddressallofthesafetyconcerns,
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
Alloys by Various Combustion and Fusion Techniques
of this standard to establish appropriate safety and health
E1060 PracticeforInterlaboratoryTestingofSpectrochemi-
practices and determine the applicability of regulatory limita-
cal Methods of Analysis
tions prior to use.
3. Ordering Information
2. Referenced Documents
2 3.1 Ordersformaterialunderthisspecificationshallinclude
2.1 ASTM Standards:
the following information:
D1971 Practices for Digestion of Water Samples for Deter-
3.1.1 Alloy, as indicated with UNS number,
minationofMetalsbyFlameAtomicAbsorption,Graphite
3.1.2 Size,
Furnace Atomic Absorption, Plasma Emission Spectros-
3.1.3 Temper designation (Section 6),
copy, or Plasma Mass Spectrometry
3.1.4 Surface finish (Section 10),
E3 Guide for Preparation of Metallographic Specimens
3.1.5 Marking and packaging (Section 19), and
E8 Test Methods for Tension Testing of Metallic Materials
3.1.6 Certification, if required. Please note that certification
E18 Test Methods for Rockwell Hardness of Metallic Ma-
should include traceability of the heat to the original manufac-
terials
turer.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
4. Chemical Requirements
4.1 Each alloy shall conform to the requirements as to
1
This specification is under the jurisdiction of ASTM Committee F01 on
chemical composition prescribed in Table 1.
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
Materials.
5. Surface Lubricants
Current edition approved Jan. 1, 2005. Published January 2005. Originally
approved in 1993. Last previous edition approved in 1999 as F1466–99. DOI: 5.1 All lubricants used during cold-working operations,
10.1520/F1466-99R05.
such as drawing, rolling, or spinning, shall be capable of being
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
removed readily by any of the common organic degreasing
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
solvents.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F1466 – 99 (2005)
TABLE 1 Chemical Requirements TABLE 3 Tensile Strength Requirements for Wire and Rod
Tensile Strength, ksi (MPa)
NOTE 1—Roundobservedorcalculatedvaluestothenearestunitinthe
Temper
last right-hand place of figures used in expressing the limiting value, in UNS No. K94620
Designation
UNS No. K94630
(Nominal Values)
accordance with the rounding-off method of Practice E29.
A 85 (586) max 85 (586) max
Element UNS No. K94630 UNS No. K94620
B 85 to 105 (586 to 724) 85 to 100 (586 to 689)
A A
Iron, nominal remainder rem
...

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