ASTM-D6080 2012

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D6080-12a Standard Practice for Defining the Viscosity Characteristics of Hydraulic Fluids

Published By	Publication Date	Number of Pages
ASTM	2012	6

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Description

ASTM D6080-12a

Historical Standard: Standard Practice for Defining the Viscosity Characteristics of Hydraulic Fluids

ASTM D6080

Scope

1.1 This practice covers all hydraulic fluids based either on petroleum, synthetic, or naturally-occurring base stocks. It is not intended for water-containing hydraulic fluids.

1.2 For determination of viscosities at low temperature, this practice uses millipascal·second (mPa·s) as the unit of viscosity. For reference, 1 mPa·s is equivalent to 1 centipoise (cP). For determination of viscosities at high temperature, this practice uses millimetre squared per second (mm²/s) as the unit of kinematic viscosity. For reference, 1 mm²/s is equivalent to 1 centistoke (cSt).

1.3 This practice is applicable to fluids ranging in kinematic viscosity from about 4 to 150 mm²/s as measured at a reference temperature of 40°C and to temperatures from −50 to +16°C for a fluid viscosity of 750 mPa·s.

Note 1—Fluids of lesser or greater viscosity than the range described in 1.3 are seldom used as hydraulic fluids. Any mathematical extrapolation of the system to either higher or lower viscosity grades may not be appropriate. Any need to expand the system should be evaluated on its own merit.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

Keywords

Brookfield viscosity; hydraulic fluid; shear stability; viscosity; viscosity classification

ICS Code

ICS Number Code 75.120 (Hydraulic fluids)

DOI: 10.1520/D6080-12A

Additional information

Standard Title	D6080-12a Standard Practice for Defining the Viscosity Characteristics of Hydraulic Fluids
Published Code	ASTM
Publication Date	2012
Pages Count	6