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ASTM-A904 2009

$35.75

A904-09 Standard Specification for 50 Nickel-50 Iron Powder Metallurgy Soft Magnetic Parts

Published By Publication Date Number of Pages
ASTM 2009 3
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1.1 This specification covers the magnetic properties of 50 nickel-50 iron parts fabricated by powder metallurgy techniques and is intended for parts that require high magnetic permeability, high electrical resistivity, low coercive field strength, and low hysteresis loss. It differs from the wrought alloy specification (see Specification A753 ) because these parts are porous. A number of magnetic properties such as permeability are proportional to the sintered density.

1.2 This specification deals with powder metallurgy 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.

1.3 The values stated in customary (cgs-emu and inch-pound) units are to be regarded separately as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Ordering Information
Chemical Composition
2 Sintered Density Requirements
Magnetic Property Requirements
Workmanship, Finish and Appearance
Sampling
Rejection and Rehearing
Certification
Packaging and Package Marking
Keywords
TABLE 1
3 X1. TYPICAL MAGNETIC PROPERTIES
X1.1
X1.2
X2. HEAT TREATMENT OF MAGNETIC TEST SPECIMENS AND PARTS
X2.1
X2.2
TABLE X1.1
ASTM-A904 2009
$35.75