ASTM F1684-99

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

STANDARD published on 10.1.1999

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The information about the standard:

Designation standards: ASTM F1684-99
Note: WITHDRAWN
Publication date standards: 10.1.1999
SKU: NS-51162
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM F1684-99 :

Keywords:

Iron-nickel alloys, Iron-nickel-cobalt alloys, Low-expansion alloys, UNS K93050 (iron-nickel low-expansion alloy, Invar PC), UNS K93500 (iron-nickel low-expansion alloy, super Invar), ICS Number Code 77.100 (Ferroalloys), 77.120.40 (Nickel, chromium and their alloys)

Additional information

1. 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, 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.

2. Referenced Documents

E1019-18	Standard Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by Various Combustion and Inert Gas Fusion Techniques
E354-21e1	Standard Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys (Includes all amendments and changes 2/23/2022).
E18-22	Standard Test Methods for Rockwell Hardness of Metallic Materials
E1601-19	Standard Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
E228-22	Standard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
E140-12B(2019)e1	Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness (Includes all amendments and changes 5/7/2019).
E112-13(2021)	Standard Test Methods for Determining Average Grain Size
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E8-04	Standard Test Methods for Tension Testing of Metallic Materials
D1971-16(2021)e1	Standard Practices for Digestion of Water Samples for Determination of Metals by Flame Atomic Absorption, Graphite Furnace Atomic Absorption, Plasma Emission Spectroscopy, or Plasma Mass Spectrometry (Includes all amendments and changes 12/22/2021).
E10-23	Standard Test Method for Brinell Hardness of Metallic Materials
E45-18a(2023)	Standard Test Methods for Determining the Inclusion Content of Steel (Includes all amendments and changes 11/6/2023).
E92-23	Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials

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