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ASTM D445 - 24
Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
| Fecha edición: |
2024-04-01
En Vigor
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| Idiomas disponibles: | Inglés |
| Resumen: | |
| Keywords: | dynamic viscosity; kinematic viscosity; viscometer; viscosity; |
| Scope: | 1.1 This test method specifies a procedure for the determination of the kinematic viscosity, ν, of liquid petroleum products, both transparent and opaque, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. The dynamic viscosity, η, can be obtained by multiplying the kinematic viscosity, ν, by the density, ρ, of the liquid. Note 1: For the measurement of the kinematic viscosity and viscosity of bitumens, see also Test Methods D2170 and D2171. Note 2: ISO 3104 corresponds to Test Method D445 – 03. 1.2 The result obtained from this test method is dependent upon the behavior of the sample and is intended for application to liquids for which primarily the shear stress and shear rates are proportional (Newtonian flow behavior). If, however, the viscosity varies significantly with the rate of shear, different results may be obtained from viscometers of different capillary diameters. The procedure and precision values for residual fuel oils, which under some conditions exhibit non-Newtonian behavior, have been included. 1.3 The range of kinematic viscosities covered by this test method is from 0.2 mm2/s to 300 000 mm2/s (see Table A1.1) at all temperatures (see 6.3 and 6.4). The precision has only been determined for those materials, kinematic viscosity ranges and temperatures as shown in the footnotes to the precision section. 1.4 The values stated in SI units are to be regarded as standard. The SI unit used in this test method for kinematic viscosity is mm2/s, and the SI unit used in this test method for dynamic viscosity is mPa·s. For user reference, 1 mm2/s = 10-6 m2/s = 1 cSt and 1 mPa·s = 1 cP = 0.001 Pa·s. 1.5 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
| ICS: | 75.080 - Productos petrolíferos en general, 17.060 - Medición de volumen, masa, densidad, viscosidad |
| CTN: | D02.07 - D02.07 |
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Otras Relaciones |
Es referenciada por D6080-18A Es referenciada por D8278-20 Es referenciada por D7863-22 Es referenciada por D1763-00R21 Es referenciada por D8046-21 Es referenciada por D4924-21 Es referenciada por D6278-20A Es referenciada por D4652-20 Es referenciada por F3401-19 Es referenciada por D6871-17 Es referenciada por D8240-22E01 Es referenciada por D0333-01R21 Es referenciada por D4057-22 Es referenciada por D7279-20 Es referenciada por D2532-22 Es referenciada por D4052-22 Es referenciada por D6891-23 Es referenciada por D5967-21 Es referenciada por D6681-23 Es referenciada por D1243-22E01 |










