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ASTM A839-02(2008)
Standard Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic Applications
Automaticky preložený názov:
Štandard Specification pre Iron-fosfor práškovej metalurgie (P / M), diely pre magneticky mäkkého aplikácie
NORMA vydaná dňa 1.5.2008
Informácie o norme:
Označenie normy: ASTM A839-02(2008)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.5.2008
Kód tovaru: NS-4461
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM A839-02(2008) :
Keywords:
coercive field strength, iron-phosphorus, powder metallurgy (P/M), P/M parts, Metallographic analysis/inspection, Permeability--magnetic alloys, Phosphorus iron, Powder metallurgy (P/M) materials--specifications, Coercive force, Electrical resistance/resistivity--electrical contact materials, Fabricated materials--specifications, Iron--specifications, Magnetic materials/applications--specifications, ICS Number Code 77.160 (Powder metallurgy)
Doplňujúce informácie
| 1. Scope | ||||||||||
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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. |
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| 2. Referenced Documents | ||||||||||
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