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ASTM-A1070:2022 Edition

ASTM-A1070:2022 Edition

$34.13

A1070-16(2022) Standard Specification for Cast and Sintered Alnico Permanent Magnets

Published By Publication Date Number of Pages
ASTM 2022 8
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ASTM A1070-16-Reapproved2022

Active Standard: Standard Specification for Cast and Sintered Alnico Permanent Magnets

ASTM A1070

Scope

1.1 This specification covers technically important, commercially available, magnetically hard, cast and sintered permanent magnets known commonly as Alnico.

1.2 Alnico magnets have approximate magnetic properties of residual magnetic induction, Br, from 0.52 T (5200 G) to 1.35 T (13500 G) and coercivity, HcB, from 38 kA/m (475 Oe) to 175 kA/m (2200 Oe). Their specific magnetic hysteresis behavior (demagnetization curves) can be characterized using Test Method A977/A977M.

1.3 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.

1.4 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.

1.5 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.

Keywords

Alnico magnet; cast Alnico magnet; coercive field strength; magnetic flux density; magnetic properties; maximum energy product; permanent magnet; residual induction; sintered Alnico magnet;

ICS Code

ICS Number Code 29.100.10 (Magnetic components)

DOI: 10.1520/A1070-16R22

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