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ASTM F1684-06(2021)

(Specification)

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

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 standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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.

General Information

Status
Published
Publication Date
28-Feb-2021
ICS
77.100 - Ferroalloys
77.120.40 - Nickel, chromium and their alloys
Technical Committee
F01 - Electronics
Drafting Committee
F01.03 - Metallic Materials, Wire Bonding, and Flip Chip
Current Stage
Ref Project

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ASTM F1684-06(2021) - Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion ApplicationsASTM F1684-06(2021) - Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications
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ASTM F1684-06(2021) - Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications
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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.
Designation:F1684 −06 (Reapproved 2021)
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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This specification covers two iron-nickel alloys and one 2.1 ASTM Standards:
iron-nickel-cobalt alloy, for low thermal expansion applica- D1971Practices for Digestion of Water Samples for Deter-
tions. The two iron-nickel alloys, both containing nominally minationofMetalsbyFlameAtomicAbsorption,Graphite
Furnace Atomic Absorption, Plasma Emission
36% nickel and 64% iron, with the conventional alloy
Spectroscopy, or Plasma Mass Spectrometry
designated by UNS No. K93603, and the free-machining alloy
E8Test Methods for Tension Testing of Metallic Materials
designated as UNS No. K93050. The iron-nickel-cobalt alloy,
[Metric] E0008_E0008M
containingnominally32%nickel,5%cobaltand63%iron,is
E10Test Method for Brinell Hardness of Metallic Materials
designated by UNS No. K93500.This specification defines the
E18Test Methods for Rockwell Hardness of Metallic Ma-
following product forms for UNS No. K93603 and UNS No.
terials
K93500: wire, rod, bar, strip, sheet plate, and tubing. The
E29Practice for Using Significant Digits in Test Data to
free-machining alloy, UNS No. K93050, is defined for bar
Determine Conformance with Specifications
products only. Unless otherwise indicated, all articles apply to
E45Test Methods for Determining the Inclusion Content of
all three alloys.
Steel
1.2 The values stated in inch-pound units are to be regarded
E92Test Methods for Vickers Hardness and Knoop Hard-
as standard. The values given in parentheses are mathematical
ness of Metallic Materials
conversions to SI units that are provided for information only
E112Test Methods for Determining Average Grain Size
and are not considered standard.
E140Hardness Conversion Tables for Metals Relationship
Among Brinell Hardness, Vickers Hardness, Rockwell
1.3 Thispertainsonlytothetestmethodsection,Section13.
Hardness, Superficial Hardness, Knoop Hardness, Sclero-
This standard does not purport to address all of the safety
scope Hardness, and Leeb Hardness
concerns, if any, associated with its use. It is the responsibility
E228Test Method for Linear Thermal Expansion of Solid
of the user of this standard to establish appropriate safety,
Materials With a Push-Rod Dilatometer
health, and environmental practices and determine the appli-
E354 Test Methods for Chemical Analysis of High-
cability of regulatory limitations prior to use.
Temperature,Electrical,Magnetic,andOtherSimilarIron,
1.4 This international standard was developed in accor-
Nickel, and Cobalt Alloys
dance with internationally recognized principles on standard-
E1019Test Methods for Determination of Carbon, Sulfur,
ization established in the Decision on Principles for the
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
Development of International Standards, Guides and Recom-
Alloys by Various Combustion and Inert Gas Fusion
mendations issued by the World Trade Organization Technical
Techniques
Barriers to Trade (TBT) Committee.
E1601Practice for Conducting an Interlaboratory Study to
Evaluate the Performance of an Analytical Method
1
This specification is under the jurisdiction of ASTM Committee F01 on
Electronicsand is the direct responsibility of Subcommittee F01.03 on Metallic
2
Materials, Wire Bonding, and Flip Chip. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2021. Published March 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1996. Last previous edition approved in 2016 as F1684–06 (2016). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/F1684-06R21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F1684−06 (2021)
3. Ordering Information bright anneal or anneal and descale by the manufacturer, and
supplied in the annealed temper.
3.1 Ordersformaterialunderthisspecificationshallinclude
the following information: 6.3 Strip and Sheet— (UNS No. K93603 and No. K93500
3.1.1 Alloy, as indicated with UNS number, only)Theseformsshallbesup
...

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SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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.

  • Guide
    12 pages
    English language
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  • Guide
    12 pages
    English language
    sale 15% off