ASTM F1684-06

Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications

ABSTRACT
This specification covers the requirements and corresponding test methods for two iron-nickel alloys and one iron-nickel-cobalt alloy, for low thermal expansion applications. The two iron-nickel alloys, which both contain nominally 36 % nickel and 64 % iron, are the conventional alloy designated as UNS No. K93603 and the free-machining alloy designated as UNS No. K93050. On the other hand, the iron-nickel-cobalt alloy contains nominally 32 % nickel, 5 % cobalt and 63 % iron, and is designated as UNS No. K93500. UNS No. K93603 and UNS No. K93500 shall be in the forms of wire, rod, bar, strip, sheet plate, and tubing, while UNS No. K93050 shall be for bar products only. When test, the alloys shall comply to specified requirements for chemical composition, surface finish, temper, grain size, hardness, tensile strength, thermal expansion, transformation, and dimensions.
SCOPE
1.1 This specification covers two iron-nickel alloys and one iron-nickel-cobalt alloy, for low thermal expansion applications. The two iron-nickel alloys, both containing nominally 36 % nickel and 64 % iron, with the conventional alloy designated by UNS No. K93603, and the free-machining alloy designated as UNS No. K93050. The iron-nickel-cobalt alloy, containing nominally 32 % nickel, 5 % cobalt and 63 % iron, is designated by UNS No. K93500. This specification defines the following product forms for UNS No. K93603 and UNS No. K93500: wire, rod, bar, strip, sheet plate, and tubing. The free-machining alloy, UNS No. K93050, is defined for bar products only. Unless otherwise indicated, all articles apply to all three alloys.
1.2 The values stated in inch-pound units are to be regarded as the standard. SI values, shown in parentheses, are for information only.
This pertains only to the test method section, Section 13.  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: 31-May-2006
• ICS: 77.100 - Ferroalloys
• ICS: 77.120.40 - Nickel, chromium and their alloys
• Technical Committee: F01 - Electronics
• Drafting Committee: F01.03 - Metallic Materials, Wire Bonding, and Flip Chip

Relations

• Replaces: ASTM F1684-99(2005)e1 - Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications
• Effective Date: 01-Jun-2006
• Replaced By: ASTM F1684-06(2011) - Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications
• Effective Date: 01-Jun-2011
• Referred By: ASTM D8303-20 - Standard Test Method for Determining Thermal Cracking Properties of Asphalt Mixtures Through Measurement of Thermally Induced Stress and Strain
• Effective Date: 01-Jun-2006

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: F1684 – 06
Standard Specification for
Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal
1
Expansion Applications
This standard is issued under the fixed designation F1684; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope E18 Test Methods for Rockwell Hardness of Metallic Ma-
terials
1.1 This specification covers two iron-nickel alloys and one
E29 Practice for Using Significant Digits in Test Data to
iron-nickel-cobalt alloy, for low thermal expansion applica-
Determine Conformance with Specifications
tions. The two iron-nickel alloys, both containing nominally
E45 Test Methods for Determining the Inclusion Content of
36 % nickel and 64 % iron, with the conventional alloy
Steel
designated by UNS No. K93603, and the free-machining alloy
E92 Test Method for Vickers Hardness of Metallic Materi-
designated as UNS No. K93050. The iron-nickel-cobalt alloy,
als
containingnominally32 %nickel,5 %cobaltand63 %iron,is
E112 Test Methods for Determining Average Grain Size
designated by UNS No. K93500. This specification defines the
E140 Hardness Conversion Tables for Metals Relationship
following product forms for UNS No. K93603 and UNS No.
Among Brinell Hardness, Vickers Hardness, Rockwell
K93500: wire, rod, bar, strip, sheet plate, and tubing. The
Hardness, Superficial Hardness, Knoop Hardness, and
free-machining alloy, UNS No. K93050, is defined for bar
Scleroscope Hardness
products only. Unless otherwise indicated, all articles apply to
E228 Test Method for Linear Thermal Expansion of Solid
all three alloys.
Materials With a Push-Rod Dilatometer
1.2 The values stated in inch-pound units are to be regarded
E354 Test Methods for Chemical Analysis of High-
as the standard. SI values, shown in parentheses, are for
Temperature, Electrical, Magnetic, and Other Similar Iron,
information only.
Nickel, and Cobalt Alloys
1.3 Thispertainsonlytothetestmethodsection,Section13.
E1019 Test Methods for Determination of Carbon, Sulfur,
This standard does not purport to address all of the safety
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
concerns, if any, associated with its use. It is the responsibility
Alloys by Various Combustion and Fusion Techniques
of the user of this standard to establish appropriate safety and
E1601 Practice for Conducting an Interlaboratory Study to
health practices and determine the applicability of regulatory
Evaluate the Performance of an Analytical Method
limitations prior to use.
3. Ordering Information
2. Referenced Documents
2 3.1 Orders for material under this specification shall include
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,
mination of Metals by FlameAtomicAbsorption, 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),
E8 Test Methods for Tension Testing of Metallic Materials
3.1.5 Marking and packaging (Section 18), and
E10 Test Method for Brinell Hardness of Metallic Materials
3.1.6 Certification, if required.
NOTE 1—Certification should include traceability of the heat to the
1
This specification is under the jurisdiction of ASTM Committee F01 on
original manufacturer.
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
Materials.
4. Chemical Requirements
CurrenteditionapprovedJune1,2006.PublishedJuly2006.Originallyapproved
´1
in 1996. Last previous edition approved in 2005 as F1684 – 99(2005) . DOI:
4.1 Each alloy shall conform to the requirements as to
10.1520/F1684-06.
2 chemical composition prescribed in Table 1.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
NOTE 2—Lower levels of phosphorus and sulfur may be required for
Standards volume information, refer to the standard’s Document Summary page on
certain welding applications. These lower levels shall be negotiated, as
the ASTM website.
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F1684 – 06
TABLE 1 Chemical Requirements TABLE 3 Tensile Strength Requirements for Wire and Rod
NOTE 1—Round observed or calculated values to the nearest unit in the NOTE 1—The tensile strength limits for Temper D apply only to
1
last right-hand place of figures used in expressing the limiting value, in material ⁄2 in. diameter and under.
...