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ASTM F1684-99

Historical Revision

Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications (Withdrawn 2024)

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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.


SDO ASTM: ASTM International
Document Number F1684
Publication Date Jan. 10, 1999
Language en - English
Page Count 7
Revision Level 99
Supercedes
Committee F01.03
Publish Date Document Id Type View
March 1, 2021 F1684-06R21 Revision
June 1, 2006 F1684-06 Revision
Jan. 10, 1999 F1684-99 Revision
May 1, 2016 F1684-06R16 Reaffirmation
June 1, 2011 F1684-06R11 Reaffirmation
Jan. 1, 2005 F1684-99R05E01 Reaffirmation