ASTM A839-02(2008)
Standard Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic Applications

Standard No.

ASTM A839-02(2008)

Release Date

2002

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM A839-15

Latest

ASTM A839-15(2023)

Scope

1.1 This specification covers parts produced from iron-phosphorus powder metallurgy materials. These parts are used in magnetic applications requiring higher permeability and electrical resistivity and lower coercive field strength 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 resintered or annealed.

1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

ASTM A839-02(2008) history

• 2023 ASTM A839-15(2023) Standard Specification for Iron-Phosphorus Powder Metallurgy Parts for Soft Magnetic Applications
• 2015 ASTM A839-15 Standard Specification for Iron-Phosphorus Powder Metallurgy Parts for Soft Magnetic Applications
• 2002 ASTM A839-02(2008) Standard Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic Applications
• 2002 ASTM A839-02 Standard Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic Applications
• 1996 ASTM A839/A839M-96 Standard Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic Applications