|Number of pages||9|
1.1 This specification covers technically important, commercially available, magnetically hard sintered (fully dense) permanent magnets commonly known as samarium cobalt. These materials are available in two general composition families abbreviated “SmCo 1:5” and “SmCo 2:17.” The numbers indicate the approximate atomic ratio of samarium to the sum of other constituents. (Refer to for additional composition information.)
1.2 Samarium cobalt magnets have approximate magnetic properties of residual magnetic induction, Br, from 0.78 T (7800 G) to 1.18 T (11 800 G) and intrinsic coercivity, HcJ, typically greater than 800 kA/m (10 000 Oe). Special grades and isotropic (un-aligned) magnets can have properties outside these ranges (see ). Specific magnetic hysteresis behavior (demagnetization curve) can be characterized using Test Method .
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.
|Dutch title||Standard Specification for Sintered Samarium Cobalt (SmCo) Permanent Magnets|
|English title||Standard Specification for Sintered Samarium Cobalt (SmCo) Permanent Magnets|