ASTM-D5621 › Historical Revision Information
Standard Test Method for Sonic Shear Stability of Hydraulic Fluids
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Scope
1.1 This test method covers the evaluation of the shear stability of a hydraulic fluid in terms of the final viscosity that results from irradiating a sample of the hydraulic fluid in a sonic oscillator.
1.2 Evidence has been presented that a good correlation exists between the shear degradation that results from sonic oscillation and that obtained in a vane pump test procedure.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.4 This test method uses millimetres squared per second (mm ²/s), an SI unit, as the unit of viscosity. For information, the equivalent unit, cSt, is shown in parentheses.
Keywords
hydraulic fluid; shear stability; sonic shear test; viscosity stable
To find similar documents by ASTM Volume:
05.02 (Petroleum Products and Lubricants (II): D3711 - D6122)
To find similar documents by classification:
75.120 (Hydraulic fluids Fluid power systems, see 23.100)
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Document Number
ASTM-D5621-07R13
Revision Level
2019 EDITION
Status
Superseded
Modification Type
New
Publication Date
July 4, 2019
Document Type
Test Method
Page Count
3 pages
Committee Number
D02.07