ASTM F1466-99(2005)
(Specification)Standard Specification for Iron-Nickel-Cobalt Alloys for Metal-to-Ceramic Sealing Applications
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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F1466 – 99 (Reapproved 2005)
Standard Specification for
Iron-Nickel-Cobalt Alloys for Metal-to-Ceramic Sealing
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
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
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.
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 remainder
C 95 to 115 (655 to 793) 95 to 110 (655 to 758)
A A
Nickel, nominal 29 27
D 105 to 125 (724 to 862) 105 to 120 (724 to 827)
A A
Cobalt, nominal 17 25
E 125 (862) min 120 (827) min
Manganese, max 0.35 0.35
Silicon, max 0.15 0.15
Carbon, max 0.02 0.02
B B
Aluminum, max 0.01 0.01
B B
Magnesium, max 0.01 0.01
NOTE 2—This corresponds to a grain size of 0.065 mm, or 16
B B
Zirconium, max 0.01 0.01
grains/in. of image at 1003.
B B
Titanium, max 0.01 0.01
Copper, max 0.20 0.20
7.2 Finer grain sizes for deep drawing quality shall be
Chromium, max 0.03 0.03
negotiated between user and supplier.
Molybdenum, max 0.06 0.06
C C
Phosphorus, max 0.006 0.006
C C
Sulfur, max 0.006 0.006
8. Hardness
A
Theiron,nickel,andcobaltrequirementsarenominalandmaybeadjustedby
8.1 Deep-Drawing Temper—For deep drawing, the hard-
themanufacturertomeettherequirementsforthecoefficientofthermalexpansion
nessshallnotexceed82HRBformaterial0.100in.(2.54mm)
as specified in 12.1.
B
The total of aluminum, magnesium, titanium, and zirconium shall not exceed
and less in thickness, and 85 HRB for material over 0.100 in.
0.04 %.
inthicknesswhendeterminedinaccordancewithTestMethods
C
The total of phosphorus and sulfur shall not exceed 0.010. %.
E18. See also Test Method E92 for Vickers Hardness Testing
and tables in E140.
8.2 Rolled and Annealed Tempers—Hardness tests when
6. Temper
properlyappliedcanbeindicativeoftensilestrength.Hardness
6.1 The desired temper of the material shall be specified in
scales and ranges for these tempers, if desirable, shall be
the purchase order.
negotiated between supplier and purchaser.
6.2 Tube—Unless otherwise agreed upon between the sup-
plier or the manufacturer and the purchaser, these forms shall
9. Tensile Strength
begivenafinalbrightannealbythemanufacturerandsupplied
9.1 Strip and Sheet:
in the annealed temper.
9.1.1 Tensile strength shall be the basis for acceptance or
6.3 Strip and Sheet—These forms shall be supplied in one
rejection for the tempers given in Table 2 and shall conform
of the tempers given in Table 2 or in deep-drawing temper, as
with the requirements prescribed.
specified.
9.1.2 Tension test specimens shall be taken so the longitu-
6.4 Wire and Rod—These forms shall be supplied in one of
dinalaxisisparalleltothedirectionofrollingandthetestshall
the tempers given in Table 3 as specified. Unless otherwise
be performed in accordance with Test Methods E8.
specified, the material shall be bright annealed and supplied in
9.2 Wire and Rod:
Temper A (annealed).
9.2.1 Tensile strength shall be the basis for acceptance or
NOTE 1—For rod forms, air anneal, followed by centerless grinding to
rejection for the tempers given inTable 3 and shall conform to
remove scale, is an acceptable alternate.
the requirements prescribed.
9.2.2 The test shall be performed in accordance with Test
7. Grain Size
Methods E8.
7.1 Strip and sheet for deep drawing shall have an average
grain size not larger thanASTM No. 5 (Note 2), and no more
10. Surface Finish
than 10% of the grains shall be larger than No. 5 when
10.1 The standard surface finishes available shall be those
measured in accordance with Test Methods E112.
resulting from the following operations:
10.1.1 Hot rolling,
10.1.2 Forging,
TABLE 2 Tensile Strength Requirements for Strip and Sheet
10.1.3 Centerless grinding (rod),
Tensile Strength, ksi (MPa)
Temper Temper
10.1.4 Belt polishing,
UNS No. K94620
Designation Name
UNS No. K94630
10.1.5 Cold rolling, and
(Nominal Values)
10.1.6 Wire and rod drawing.
A annealed 82 max (565 max) 85 max (586 max)
B1 4hard 75to90(517to 85 to 100 (586 to
/
621) 689)
11. Inclusion Content
C half hard 85 to 100 (586 to 95 to 110 (655 to
689) 758) 11.1 Wire, Rod, Bar, Strip and Sheet—These product forms
D3 4 hard 95 to 110 (655 to 105 to 120 (724 to
/ shallbefreeofinclusions,cracks,blowholesandotherdefects
758) 827)
that are detrimental to the quality of subsequent product. The
E hard 100 min (689 min) 120 min (827 min)
maximum inclusion rating number shall be 2 for Inclusion
F1466 – 99 (2005)
NOTE 5—Asuggested etchant is a solution of three parts by volume of
Types,A, B, C and D in both the thin and heavy series shown
concentrated hydrochloric acid and one part of concentrated nitric acid
in Plate I using Practice E45, Method A, Worst-Field Tech-
saturated with cupric chloride (CuCl ·2H O). This etchant is more
2 2
nique.
effective when allowed to stand for 20 min after mixing. After several
hours it loses its strength and should be discarded at the end of the day.
NOTE 3—Thetestforinclusionsmaybeperformedonbilletsections.In
Etching is best accomplished by swabbing the specimen with cotton
suchcases,thesamplesectionmustincluderegionsthatcorrespondtothe
soaked with the etchant. Etching is usually complete when the surface of
top of the ingot.
the metal appears to have turned dull.
NOTE 4—Product section size information at which the inclusion
ratings were taken should be included.
15.2 Specimens that show no transformation and that show
partial transformation are illustrated in Fig. 1 and Fig. 2,
12. Thermal Expansion Characteristics
respectively.
12.1 The average linear coefficients of thermal expansion
shall be with
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.