ASTM D6158-18
(Specification)Standard Specification for Mineral Hydraulic Oils
Standard Specification for Mineral Hydraulic Oils
ABSTRACT
This specification covers the standard for mineral oils used in hydraulic systems which require refined base oil (Class HH), refined mineral base oil with rust and oxidation inhibitors (Class HL) or refined mineral base oil with rust and oxidation inhibitors plus antiwear characteristics (Class HM). This specification only covers lubricating oils before they are installed in the hydraulic system and does not include all hydraulic oils. Requirements for the mineral oils shall include, but not limited to, viscosity, specific gravity, appearance, flash point, chemical acid number, corrosion, water separation, elastomer compatibility, air release, and thermal stability.
SCOPE
1.1 This specification covers mineral and synthetic oils of the types API groups I, II, III, and IV used in hydraulic systems, where the performance requirements demand fluids with one of the following characteristics:
1.1.1 A refined base oil or synthetic base stock (Class HH),
1.1.2 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors (Class HL),
1.1.3 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors plus anti-wear characteristics (Class HM),
1.1.4 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors, anti-wear characteristics, and increased viscosity index higher than 140 (Class HV),
1.1.5 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors plus anti-wear characteristics meeting a higher performance level than an HM fluid to address higher demanding hydraulic systems (Class HMHP), and
1.1.6 A refined mineral base oil with rust or synthetic base stock and oxidation inhibitors, anti-wear characteristics, and increased viscosity index higher than 140 meeting a higher performance level than an HV fluid to address higher demanding hydraulic systems (Class HVHP).
1.2 This specification defines the requirements of mineral oil-based or synthetic-based hydraulic fluids that are compatible with most existing machinery components when there is adequate maintenance.
1.3 This specification defines only new lubricating oils before they are installed in the hydraulic system.
1.4 This specification defines specific types of hydraulic oils. It does not include all hydraulic oils. Some oils that are not included may be satisfactory for certain hydraulic applications. Certain equipment or conditions of use may permit or require a wider or narrower range of characteristics than those described herein.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5.1 Exception—In X1.3.9 on Wear Protection, the values of pump pressure are in MPa, and the psi follows in brackets as a reference point immediately recognized by a large part of the industry.
1.6 The following safety hazard caveat pertains to the test methods referenced in this specification. 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.
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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.
Designation:D6158 −18
Standard Specification for
1
Mineral Hydraulic Oils
This standard is issued under the fixed designation D6158; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.5 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
1.1 This specification covers mineral and synthetic oils of
standard.
the types API groups I, II, III, and IV used in hydraulic
1.5.1 Exception—In X1.3.9 on Wear Protection, the values
systems, where the performance requirements demand fluids
ofpumppressureareinMPa,andthepsifollowsinbracketsas
with one of the following characteristics:
a reference point immediately recognized by a large part of the
1.1.1 Arefined base oil or synthetic base stock (Class HH),
industry.
1.1.2 Arefined mineral base oil or synthetic base stock with
1.6 The following safety hazard caveat pertains to the test
rust and oxidation inhibitors (Class HL),
methods referenced in this specification. This standard does
1.1.3 Arefined mineral base oil or synthetic base stock with
not purport to address all of the safety concerns, if any,
rust and oxidation inhibitors plus anti-wear characteristics
associated with its use. It is the responsibility of the user of this
(Class HM),
standard to establish appropriate safety, health, and environ-
1.1.4 Arefined mineral base oil or synthetic base stock with
mental practices and determine the applicability of regulatory
rust and oxidation inhibitors, anti-wear characteristics, and
limitations prior to use.
increased viscosity index higher than 140 (Class HV),
1.7 This international standard was developed in accor-
1.1.5 Arefined mineral base oil or synthetic base stock with
dance with internationally recognized principles on standard-
rust and oxidation inhibitors plus anti-wear characteristics
ization established in the Decision on Principles for the
meeting a higher performance level than an HM fluid to
Development of International Standards, Guides and Recom-
address higher demanding hydraulic systems (Class HMHP),
mendations issued by the World Trade Organization Technical
and
Barriers to Trade (TBT) Committee.
1.1.6 A refined mineral base oil with rust or synthetic base
stock and oxidation inhibitors, anti-wear characteristics, and
2. Referenced Documents
increased viscosity index higher than 140 meeting a higher
performance level than an HV fluid to address higher demand- 2
2.1 ASTM Standards:
ing hydraulic systems (Class HVHP).
D92 Test Method for Flash and Fire Points by Cleveland
1.2 This specification defines the requirements of mineral Open Cup Tester
D97 Test Method for Pour Point of Petroleum Products
oil-based or synthetic-based hydraulic fluids that are compat-
ible with most existing machinery components when there is D130 Test Method for Corrosiveness to Copper from Petro-
leum Products by Copper Strip Test
adequate maintenance.
D445 Test Method for Kinematic Viscosity of Transparent
1.3 This specification defines only new lubricating oils
and Opaque Liquids (and Calculation of Dynamic Viscos-
before they are installed in the hydraulic system.
ity)
1.4 This specification defines specific types of hydraulic
D471 Test Method for Rubber Property—Effect of Liquids
oils.Itdoesnotincludeallhydraulicoils.Someoilsthatarenot
D664 Test Method for Acid Number of Petroleum Products
included may be satisfactory for certain hydraulic applications.
by Potentiometric Titration
Certain equipment or conditions of use may permit or require
D665 Test Method for Rust-Preventing Characteristics of
a wider or narrower range of characteristics than those de-
Inhibited Mineral Oil in the Presence of Water
scribed herein.
D892 Test Method for Foaming Characteristics of Lubricat-
ing Oils
1
This specification is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
2
Subcommittee D02.N0 on Hydraulic Fluids. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2018. Published October 2018. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1997. Last previous edition approved in 2016 as D6158 – 16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6158-18. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6158 − 16 D6158 − 18
Standard Specification for
1
Mineral Hydraulic Oils
This standard is issued under the fixed designation D6158; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers mineral and synthetic oils of the types API groups I, II, III, and IV used in hydraulic systems,
where the performance requirements demand fluids with one of the following characteristics:
1.1.1 A refined base oil or synthetic base stock (Class HH),
1.1.2 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors (Class HL),
1.1.3 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors plus anti-wear characteristics (Class
HM),
1.1.4 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors, anti-wear characteristics, and
increased viscosity index higher than 140 (Class HV),
1.1.5 A refined mineral base oil or synthetic base stock with rust and oxidation inhibitors plus anti-wear characteristics meeting
a higher performance level than an HM fluid to address higher demanding hydraulic systems (Class HMHP), and
1.1.6 A refined mineral base oil with rust or synthetic base stock and oxidation inhibitors, anti-wear characteristics, and
increased viscosity index higher than 140 meeting a higher performance level than an HV fluid to address higher demanding
hydraulic systems (Class HVHP).
1.2 This specification defines the requirements of mineral oil-based or synthetic-based hydraulic fluids that are compatible with
most existing machinery components when there is adequate maintenance.
1.3 This specification defines only new lubricating oils before they are installed in the hydraulic system.
1.4 This specification defines specific types of hydraulic oils. It does not include all hydraulic oils. Some oils that are not
included may be satisfactory for certain hydraulic applications. Certain equipment or conditions of use may permit or require a
wider or narrower range of characteristics than those described herein.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5.1 Exception—In X1.3.9 on Wear Protection, the values of pump pressure are in MPa, and the psi follows in brackets as a
reference point immediately recognized by a large part of the industry.
1.6 The following safety hazard caveat pertains to the test methods referenced in this specification. 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 safety, health, and healthenvironmental practices and determine the applicability of regulatory
limitationlimitations 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D97 Test Method for Pour Point of Petroleum Products
D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
1
This specification is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.N0D02.N0.10 on Hydraulic FluidsSpecifications.
Current edition approved Jan. 15, 2016Oct. 1, 2018. Published February 2016October 2018. Originally approved in 1997. Last previous edition approved in 20142016
as D6158 – 14.D6158 – 16. DOI: 10.1520/D6158-16.10.1520/D6158-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, W
...
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