Standard Swedish standard · SS-EN ISO 4263-3:2010

Petroleum and related products - Determination of the ageing behaviour of inhibited oils and fluids using the TOST test - Part 3: Anhydrous procedure for synthetic hydraulic fluids (ISO 4263-3:2010)

Status: Withdrawn

· Replaced by: SS-EN ISO 4263-3:2015
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Standard Swedish standard · SS-EN ISO 4263-3:2010

Petroleum and related products - Determination of the ageing behaviour of inhibited oils and fluids using the TOST test - Part 3: Anhydrous procedure for synthetic hydraulic fluids (ISO 4263-3:2010)
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Scope
This part of ISO 4263 specifies a method for the determination of the ageing behaviour of synthetic hydraulic fluids of categories HFDR, HFDU, HEES and HEPG as defined, for example, in ISO 12922[4] and ISO 15380[5]. The ageing is accelerated by the presence of oxygen and metal catalysts at elevated temperature, and the degradation of the fluid is followed by changes in acid number. Other parts of ISO 4263 specify similar procedures for the determination of ageing behaviour of mineral oils and specified categories of fire-resistant fluids used in hydraulic and other applications. NOTE Other signs of fluid deterioration, such as the formation of insoluble sludge, catalyst coil corrosion or decrease in viscosity, can occur which indicate oxidation of the fluid, but are not reflected in the calculated oxidation lifetime. The correlation of these occurrences with field service is under investigation. This test method can be used to compare the oxidation stability of fluids that are not prone to contamination with water. However, because of the large number of individual field-service applications, the correlation between the results of this test and actual service performance can vary markedly, and is best judged on experience. The precision of this test method for synthetic hydraulic fluids is not known because interlaboratory data are not available. This method might not be suitable for use in specifications or in the event of disputed results as long as these data are not available. However, precision for inhibited turbine oils is given in Clause 11 for guidance as an indication of the precision that could be obtained for synthetic hydraulic fluids.

Subjects

Hydraulic fluids (75.120)


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Standard Swedish standard · SS-EN ISO 4263-3:2010

Petroleum and related products - Determination of the ageing behaviour of inhibited oils and fluids using the TOST test - Part 3: Anhydrous procedure for synthetic hydraulic fluids (ISO 4263-3:2010)
Subscribe on standards - Read more Dölj
Price: 1 152 SEK
standard ikon pdf

PDF

Price: 1 152 SEK
standard ikon

Paper

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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-75838

Edition: 2

Approved: 11/4/2010

No of pages: 36

Replaces: SS-EN ISO 4263-3:2006

Replaced by: SS-EN ISO 4263-3:2015