ASTM D4627-22

Standard Test Method for Iron Chip Corrosion for Water–Miscible Metalworking Fluids

SIGNIFICANCE AND USE
5.1 The results obtained by this test are a useful guideline in determining the ability of water-miscible metalworking fluids to prevent or minimize rust under specific conditions. There is usually a relationship between the results of this test and a similar ability of the subject coolant to prevent rust on nested parts or in drilled holes containing chips, etc. It must be understood, however, that conditions, metal types, etc. found in practice will not correlate quantitatively with these controlled laboratory conditions. The procedure may not be able to differentiate between two products with poor rust control due to the wide spacing between test dilutions.
SCOPE
1.1 This test method covers evaluation of the ferrous corrosion control characteristics of water–miscible metalworking fluids.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.2.1 Exception—Note 1 contains inch-pound units since the drill sizes and feed rates do not have readily available metric equivalents.  
1.2.2 Exception—U.S. Standard sieve sizes include mesh values.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

• Status: Published
• Publication Date: 30-Sep-2022
• ICS: 75.080 - Petroleum products in general
• ICS: 75.100 - Lubricants, industrial oils and related products
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.L0.01 - Metal Removal Fluids and Lubricants

Standards Content (Sample)

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: D4627 − 22
Standard Test Method for
Iron Chip Corrosion for Water–Miscible Metalworking
1
Fluids
This standard is issued under the fixed designation D4627; 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* 3.1.1 For definitions of terms used in this test method, refer
to Terminology D4175.
1.1 This test method covers evaluation of the ferrous cor-
3.1.2 rust, n—corrosion product consisting primarily of
rosion control characteristics of water–miscible metalworking
hydrated iron oxides.
fluids.
3.2 Definitions of Terms Specific to This Standard:
1.2 The values stated in SI units are to be regarded as
3.2.1 breakpoint, n—weakest concentration of the water-
standard. No other units of measurement are included in this
miscible metalworking fluid tested that leaves no rust stain on
standard.
the filter paper.
1.2.1 Exception—Note 1 contains inch-pound units since
the drill sizes and feed rates do not have readily available
4. Summary of Test Method
metric equivalents.
4.1 Cast iron chips are placed in a petri dish containing a
1.2.2 Exception—U.S. Standard sieve sizes include mesh
filter paper and diluted metalworking fluid.The dish is covered
values.
and allowed to stand overnight.The amount of rust stain on the
1.3 This standard does not purport to address all of the
filterpaperisanindicationofthecorrosioncontrolprovidedby
safety concerns, if any, associated with its use. It is the
the fluid.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
5. Significance and Use
mine the applicability of regulatory limitations prior to use.
5.1 The results obtained by this test are a useful guideline in
1.4 This international standard was developed in accor-
determining the ability of water-miscible metalworking fluids
dance with internationally recognized principles on standard-
to prevent or minimize rust under specific conditions. There is
ization established in the Decision on Principles for the
usually a relationship between the results of this test and a
Development of International Standards, Guides and Recom-
similar ability of the subject coolant to prevent rust on nested
mendations issued by the World Trade Organization Technical
parts or in drilled holes containing chips, etc. It must be
Barriers to Trade (TBT) Committee.
understood,however,thatconditions,metaltypes,etc.foundin
practice will not correlate quantitatively with these controlled
2. Referenced Documents
laboratory conditions. The procedure may not be able to
2
2.1 ASTM Standards:
differentiate between two products with poor rust control due
D4175 Terminology Relating to Petroleum Products, Liquid
to the wide spacing between test dilutions.
Fuels, and Lubricants
6. Apparatus
3. Terminology
6.1 Disposable Petri Dishes, 35 mm by 10 mm plastic, with
lids.
3.1 Definitions:
6.2 Glass-Fiber Filter Paper, 1.5 µm particle retention
rating, 3.2 cm diameter.
1
This test method is under the jurisdiction of ASTM Committee D02 on
6.3 Glass Stirring Rod.
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.L0.01 on Metal Removal Fluids and Lubricants.
6.4 Spatula.
Current edition approved Oct. 1, 2022. Published October 2022. Originally
6.5 Pipettes, 5 mL.
approved in 1986. Last previous edition approved in 2017 as D4627 – 12 (2017).
DOI: 10.1520/D4627-22.
6.6 Glass Bottle, 4 oz with cap.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.7 Balance, accurate to 1 mg.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6.8 Graduated Cylinder, 50 mL.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4627 − 22
6.9 Volumetric Flask,1L. the stirring rod (6.3) to be certain all chips are submerged, all
air bubbles released, and the chips are evenly distributed.
6.10 Forceps.
9.6 Cover the dish with its lid and allow to stand for 20 h to
6.11 U.S. Standard Sieve,18 mesh(1.0 mmsieveopenings),
24 h.
stainless steel.
9.7 Drain the fluid from the dish. Invert the dish on its lid
7. Reagents and Materials
and tap to remove the chips.
3
7.1 Gray Cast Iron D
...

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: D4627 − 12 (Reapproved 2017) D4627 − 22
Standard Test Method for
Iron Chip Corrosion for Water–Miscible Metalworking
1
Fluids
This standard is issued under the fixed designation D4627; 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 Scope*
1.1 This test method covers evaluation of the ferrous corrosion control characteristics of water–miscible metalworking fluids.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Exception—Note 1 contains inch-pound units since the drill sizes and feed rates do not have readily available metric
equivalents.
1.2.2 Exception—U.S. Standard sieve sizes include mesh values.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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:
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology D4175.
3.1.2 rust, n—corrosion product consisting primarily of hydrated iron oxides.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 breakpoint, n—weakest concentration of the water-miscible metalworking fluid tested that leaves no rust stain on the filter
paper.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.L0.01 on Metal Removal Fluids and Lubricants.
Current edition approved Dec. 1, 2017Oct. 1, 2022. Published December 2017October 2022. Originally approved in 1986. Last previous edition approved in 20122017
as D4627 – 12.D4627 – 12 (2017). DOI: 10.1520/D4627-12R17.10.1520/D4627-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4627 − 22
4. Summary of Test Method
4.1 Cast iron chips are placed in a petri dish containing a filter paper and diluted metalworking fluid. The dish is covered and
allowed to stand overnight. The amount of rust stain on the filter paper is an indication of the corrosion control provided by the
fluid.
5. Significance and Use
5.1 The results obtained by this test are a useful guideline in determining the ability of water-miscible metalworking fluids to
prevent or minimize rust under specific conditions. There is usually a relationship between the results of this test and a similar
ability of the subject coolant to prevent rust on nested parts or in drilled holes containing chips, etc. It must be understood, however,
that conditions, metal types, etc. found in practice will not correlate quantitatively with these controlled laboratory conditions. The
procedure may not be able to differentiate between two products with poor rust control due to the wide spacing between test
dilutions.
6. Apparatus
6.1 Disposable Petri Dishes, 35 mm by 10 mm plastic, with lids.
6.2 Glass-Fiber Filter Paper, 1.5 μm particle retention rating, 3.2 cm diameter.
6.3 Glass Stirring Rod.
6.4 Spatula.
6.5 Pipettes, 5 mL.
6.6 Glass Bottle, 4 oz with cap.
6.7 Balance, accurate to 1 mg.
6.8 Graduated Cylinder, 50 mL.
6.9 Volumetric Flask, 1 L.
6.10 Forceps.
6.11 U.S. Standard Sieve, 18 mesh (1.0 mm sieve openings), stainless steel.
7. Reagents and Materials
3
7.1 Gray Cast Iron Drilling Chips.
NOTE 1—The chips are made from Class 30
...