ISO 20844:2015
Current
The latest, up-to-date edition.
Petroleum and related products — Determination of the shear stability of polymer-containing oils using a diesel injector nozzle
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French, English
01-09-2015
ISO 20844:2015 specifies a method to assess the resistance to shear stresses applied to mineral oils, synthetic oils, and other fluids containing polymers, when passed through a specified diesel injector nozzle. The shear stability is measured by the change in viscosity of the fluid under test, brought about by the polymer degradation during stress. Under normal circumstances, this International Standard is applied to hydraulic fluids of categories HR and HV as defined in ISO 6743‑4[1] and specified in ISO 11158 [2], but it may also be applied to fire-resistant hydraulic fluids within categories HFA, HFB, HFC, and HFD, with modified conditions as specified in ISO 12922[3].
No formal correlation has been established between the viscosity loss, or the absence of viscosity loss, obtained using the procedures described in this International Standard and that of oils and fluids in actual service. However, it provides standardized conditions for the evaluation of polymer stability under minimized thermal and oxidative stresses. It is normally used by manufacturers of fluids and additives, and users, as a means of ranking existing and potential formulations.
NOTE Changes to properties other than viscosity are specified in some specifications, but these are not covered by the procedures specified in this International Standard.
DevelopmentNote |
Supersedes ISO/DIS 20844. (09/2015)
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DocumentType |
Standard
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Pages |
11
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PublisherName |
International Organization for Standardization
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Status |
Current
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Supersedes |
Standards | Relationship |
DIN EN ISO 20844:2015-12 | Identical |
NF EN ISO 20844 : 2015 | Identical |
NBN EN ISO 20844 : 2015 | Identical |
NEN EN ISO 20844 : 2015 | Identical |
NS EN ISO 20844 : 2004 | Identical |
I.S. EN ISO 20844:2015 | Identical |
PN EN ISO 20844 : 2015 | Identical |
SN EN ISO 20844 : 2016 | Identical |
UNI EN ISO 20844 : 2005 | Identical |
UNI EN ISO 20844 : 2015 | Identical |
SS-EN ISO 20844 : 2015 | Identical |
UNE-EN ISO 20844:2016 | Identical |
BS EN ISO 20844:2015 | Identical |
EN ISO 20844:2015 | Identical |
ABNT NBR ISO 20844:2024 | Identical |
NBR ISO 20844 : 2010 | Identical |
08/30178054 DC : DRAFT FEB 2008 | BS EN ISO 12922 - LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY H (HYDRAULIC SYSTEMS) - SPECIFICATIONS FOR CATEGORIES HFAE, HFAS, HFB, HFC, HFDR AND HFDU |
04/30127170 DC : DRAFT DEC 2004 | ISO 24254 - LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY E (INTERNAL COMBUSTION ENGINE OILS) - SPECIFICATIONS FOR OILS FOR USE IN FOUR-STROKE CYCLE MOTORCYCLE GASOLINE ENGINES AND ASSOCIATED DRIVETRAINS |
DIN ISO 15380:2004-05 | LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY H (HYDRAULIC SYSTEMS) - SPECIFICATIONS FOR CATEGORIES HETG, HEPG, HEES AND HEPR |
EN ISO 12922:2012 | Lubricants, industrial oils and related products (class L) - Family H (Hydraulic systems) - Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU (ISO 12922:2012) |
BS EN ISO 12922:2012 | Lubricants, industrial oils and related products (class L). Family H (Hydraulic systems). Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU |
BS ISO 26422:2014 | Petroleum and related products. Determination of shear stability of lubricating oils containing polymers. Method using a tapered roller bearing |
DIN EN ISO 12922:2013-04 | LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY H (HYDRAULIC SYSTEMS) - SPECIFICATIONS FOR HYDRAULIC FLUIDS IN CATEGORIES HFAE, HFAS, HFB, HFC, HFDR AND HFDU (ISO 12922:2012) |
09/30196499 DC : 0 | BS ISO 26422 - PETROLEUM AND RELATED PRODUCTS - DETERMINATION OF SHEAR STABILITY OF LUBRICATING OILS CONTAINING POLYMERS - METHOD USING A TAPERED ROLLER BEARING |
14/30290161 DC : 0 | BS ISO 26422 - PETROLEUM AND RELATED PRODUCTS - DETERMINATION OF SHEAR STABILITY OF LUBRICATING OILS CONTAINING POLYMERS - METHOD USING A TAPERED ROLLER BEARING |
ISO 26422:2014 | Petroleum and related products Determination of shear stability of lubricating oils containing polymers Method using a tapered roller bearing |
UNI EN ISO 12922 : 2013 | LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY H (HYDRAULIC SYSTEMS) - SPECIFICATIONS FOR HYDRAULIC FLUIDS IN CATEGORIES HFAE, HFAS, HFB, HFC, HFDR AND HFDU |
UNE-EN ISO 12922:2013 | Lubricants, industrial oils and related products (class L) - Family H (Hydraulic systems) - Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU (ISO 12922:2012) |
I.S. EN ISO 12922:2012 | LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY H (HYDRAULIC SYSTEMS) - SPECIFICATIONS FOR HYDRAULIC FLUIDS IN CATEGORIES HFAE, HFAS, HFB, HFC, HFDR AND HFDU (ISO 12922:2012) |
BS ISO 24254:2007 | Lubricants, industrial oils and related products (class L). Family E (internal combustion engine oils). Specifications for oils for use in four-stroke cycle motorcycle gasoline engines and associated drivetrains (categories EMA and EMB) |
15/30310648 DC : 0 | BS ISO 15380 - LUBRICANTS, INDUSTRIAL OILS AND RELATED PRODUCTS (CLASS L) - FAMILY H (HYDRAULIC SYSTEMS) - SPECIFICATIONS FOR HYDRAULIC FLUIDS IN CATEGORIES HETG, HEPG, HEES AND HEPR |
BS ISO 15380:2016 | Lubricants, industrial oils and related products (class L). Family H (Hydraulic systems). Specifications for hydraulic fluids in categories HETG, HEPG, HEES and HEPR |
ISO 15380:2016 | Lubricants, industrial oils and related products (class L) — Family H (Hydraulic systems) — Specifications for hydraulic fluids in categories HETG, HEPG, HEES and HEPR |
ISO 24254:2007 | Lubricants, industrial oils and related products (class L) Family E (internal combustion engine oils) Specifications for oils for use in four-stroke cycle motorcycle gasoline engines and associated drivetrains (categories EMA and EMB) |
ISO 12922:2012 | Lubricants, industrial oils and related products (class L) Family H (Hydraulic systems) Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU |
ISO 3170:2004 | Petroleum liquids — Manual sampling |
ISO 12922:2012 | Lubricants, industrial oils and related products (class L) Family H (Hydraulic systems) Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU |
ISO 4113:2010 | Road vehicles Calibration fluids for diesel injection equipment |
ISO 11158:2009 | Lubricants, industrial oils and related products (class L) — Family H (hydraulic systems) — Specifications for categories HH, HL, HM, HV and HG |
ISO 6743-4:2015 | Lubricants, industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems) |
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