ASTM-A839 Standard Specification for Iron-Phosphorus Powder Metallurgy Parts for Soft Magnetic Applications

ASTM-A839 - 2015 R23 EDITION - CURRENT
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Standard Specification for Iron-Phosphorus Powder Metallurgy Parts for Soft Magnetic Applications
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Scope

1.1 This specification covers parts produced from iron phosphorous powder metallurgy materials. These parts are used in magnetic applications requiring higher permeability and electrical resistivity and lower coercive force than attainable routinely from parts produced from iron powder.

1.2 Two powder types are covered; Type I containing nominally 0.45% phosphorus, and Type II containing nominally 0.8% phosphorus.

1.3 This specification deals with P/M parts in the sintered or annealed condition. Should the sintered parts be subjected to any secondary operation that causes mechanical strain, such as machining or sizing, they should be re-sintered or annealed.

1.4 The values stated in either customary (cgs-emu and inch-pound) units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from two systems may result in nonconformance with this specification.

Keywords

Coercive force; iron-phosphorus; powder metallurgy (P/M); P/M parts

To find similar documents by ASTM Volume:

03.04 (Magnetic Properties)

To find similar documents by classification:

77.160 (Powder metallurgy Including sintered metal materials and hardmetals)

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Document Number

ASTM-A0839-15R23

Revision Level

2015 R23 EDITION

Status

Current

Modification Type

Revision

Publication Date

April 27, 2023

Document Type

Specification

Page Count

4 pages

Committee Number

A06.02