Standard Swedish standard · SS-EN ISO 4491-2

Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)

Status: Withdrawn

· Replaced by: SS-EN ISO 4491-2:2023
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Standard Swedish standard · SS-EN ISO 4491-2

Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)
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Scope
This part of ISO 4491 specifies a method for the determination of the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specified conditions.
The purpose of this test is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not intended as a means for the determination of the content of specific elements. (See annex A and ISO 4491-1.)
The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in table 1 (see 6.1). It is not applicable to lubricated powders or to mixtures of metal powders.
The results can be influenced by the presence of reducible, oxidizable or volatile metals, metalloids or compounds (see annex A). The results obtained on such powders shall be used with caution and their interpretation shall be subject to agreement between supplier and user.
This part of ISO 4491 shall be read in conjunction with ISO 4491-1.

Subjects

Powder metallurgy (77.160)


Buy this standard

Standard Swedish standard · SS-EN ISO 4491-2

Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)
Subscribe on standards - Read more Dölj
Price: 735 SEK
standard ikon pdf

PDF

Price: 735 SEK
standard ikon

Paper

Price: 1 176 SEK
standard ikon pdf + standard ikon

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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-29137

Edition: 1

Approved: 11/10/2000

No of pages: 10

Replaces: SS-EN 24491-2

Replaced by: SS-EN ISO 4491-2:2023