ANSI/ASTM A839-1997
软磁性磷铁粉末冶金技术零件规范

Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic Applications

ANSI/ASTM A839-1997 发布历史

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. Two powder types are covered; Type I containing nominally 0.45% phosphorus, and Type II containing nominally 0.8% phosphorus. 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.The values stated in either customary (cgs-emu and inch-pound) units or SI units are to be regarded seperately 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.

ANSI/ASTM A839-1997由美国国家标准学会 US-ANSI 发布于 1997。

ANSI/ASTM A839-1997 在中国标准分类中归属于: H72 粉末冶金材料与制品，在国际标准分类中归属于: 77.160 粉末冶金。

ANSI/ASTM A839-1997的历代版本如下：

• 1997年 ANSI/ASTM A839-1997 软磁性磷铁粉末冶金技术零件规范

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标准号

ANSI/ASTM A839-1997

发布日期

1997年

实施日期

废止日期

无

中国标准分类号

H72

国际标准分类号

77.160

发布单位

US-ANSI

适用范围

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. Two powder types are covered; Type I containing nominally 0.45% phosphorus, and Type II containing nominally 0.8% phosphorus. 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.The values stated in either customary (cgs-emu and inch-pound) units or SI units are to be regarded seperately 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.