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ASTM A801-09

Historical Revision

Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)

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1.1 This specification covers two wrought iron-cobalt alloy types for use in magnetic components requiring high permeability at and above 15 kG (1.5 T) or high magnetic saturation. The specific alloy types covered are:

Alloy TypeUNSNominal Composition
1R3000549 % Co, 49 % Fe, 2 % V
2K9265027 % Co, 0.50 % Cr, balance Fe

1.1.1 This specification also covers material supplied by a producer in the form and physical condition suitable for fabrication into parts that will later be given final heat treatment to achieve the desired magnetic characteristics and, where required, mechanical properties. It covers material supplied in form of forging billets, hot-rolled products (that is, bar, plate, and strip), cold-finished bars, and cold-rolled strip.

1.2 This specification does not cover parts produced by casting or by powder metallurgical techniques.

1.3 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.


This specification covers wrought iron-cobalt high magnetic saturation alloys, UNS R30005 (49 % Co, 49 % Fe, 2 % V) and UNS K92650 (27 % Co, balance Fe), for use in magnetic components. The specification covers alloy supplied in form of forging billets, hot-rolled bar, hot rolled plate, cold-finished bar, and cold rolled strip. It does not cover alloy produced either by casting or by powder metallurgical techniques. The material shall conform to the chemical requirements prescribed in this specification. Magnetic property requirements and dimensional tolerances are listed. Appendices giving useful information on the heat treatment of these alloys and typical physical properties are included.


SDO ASTM: ASTM International
Document Number A801
Publication Date Nov. 1, 2009
Language en - English
Page Count 5
Revision Level 09
Supercedes
Committee A06.02
Publish Date Document Id Type View
Feb. 1, 2021 A0801-21 Revision
May 1, 2014 A0801-14 Revision
Nov. 1, 2009 A0801-09 Revision
Oct. 1, 2004 A0801-04 Revision