ASTM A838-24

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ASTM A838-24

2024

Most Recent

Standard Specification for Free-Machining Ferritic Stainless Soft Magnetic Alloy Bar for Relay Applications

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1.1 This specification covers free-machining ferritic stainless soft magnetic alloy produced or supplied expressly in cold-finished bar form for use in magnetic cores and other parts requiring a high permeability, low-coercivity stainless steel.

1.1.1 This specification does not cover either cast parts or parts produced by powder metallurgy techniques.
1.2 Two specific alloy types are covered. The primary constituents are shown in Table 1. These types have corrosion resistance similar to AISI Type 430F and Type 430F, Specification A582/A582M.

1.3 This specification covers only these alloy types supplied in cold-finished bars in cross-sectional shapes such as rounds, squares, hexagons, and octagons with diameters (diagonals) greater than or equal to 6.35 mm (0.250 in.) and less than or equal to 41.5 mm (1.63 in.).2
1.4 Certain cold-finished round bar products are capable of being supplied mill annealed to required magnetic properties such as low coercivity. The size range that can be mill annealed is from 6.35 mm to 41.5 mm (0.250 in. to 1.63 in.). Other products of these alloys cannot be mill annealed to produce equivalently low coercivity; hence, the final machined parts should be heat treated as recommended by the producer.
1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to customary (cgs-emu and inch-pound) units which are provided for information only and are not considered standard.
1.6 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.
1.7 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.
ASTM A838-24
STANDARD INFO:
Standard NameASTM A838-24
ScopeStandard Specification for Free-Machining Ferritic Stainless Soft Magnetic Alloy Bar for Relay Applications
PublisherASTM - ASTM International
LanguagesEnglish
State
Publication Year2024
Most recent VersionMOST RECENT
Whether to be replaced
Addendum
FILE INFO:
File Size1 file , 270 KB
NoteThis product is unavailable in Russia, Ukraine, Belarus
Number of Pages4
Published05/01/2024
Redline File Size2 files , 340 KB
This document does not provide a preview.
ASTM A838-24
HistoryPublisher Year
ASTM A838-242024Current
ASTM A838-182018
ASTM A838-02(2013)2013
ASTM A838-02(2007)2007
ASTM A838-022002

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