ASTM D4627-92(1997)

Standard Test Method for Iron Chip Corrosion for Water-Dilutable Metalworking Fluids

SCOPE
1.1 This test method covers evaluation of the ferrous corrosion control characteristics of water-dilutable metalworking fluids.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Nov-1997
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.L0.01 - Metal Removal Fluids and Lubricants

Relations

• Replaced By: ASTM D4627-92(2002) - Standard Test Method for Iron Chip Corrosion for Water—Dilutable Metalworking Fluids
• Effective Date: 10-Nov-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact
ASTM International (www.astm.org) for the latest information.
Designation: D 4627 – 92(Reapproved 1997) An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Iron Chip Corrosion for Water–Dilutable Metalworking
Fluids
This standard is issued under the fixed designation D 4627; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4.4 Spatula.
4.5 Pipettes, 5 mL.
1.1 This test method covers evaluation of the ferrous cor-
4.6 Glass Bottle, 4-oz. with cap.
rosion control characteristics of water–dilutable metalworking
4.7 Balance, accurate to one mg.
fluids.
4.8 Graduated Cylinder,50mL.
1.2 The values stated in SI units are to be regarded as the
4.9 Volumetric Flask,1L.
standard. The values given in parentheses are for information
4.10 Forceps.
only.
4.11 U.S. Standard Sieve, 18 mesh (1.0 mm sieve openings),
1.3 This standard does not purport to address all of the
stainless steel.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Reagents and Materials
priate safety and health practices and determine the applica-
5.1 Gray Cast Iron Drilling Chips.
bility of regulatory limitations prior to use. Table 1
NOTE 1—The chips are made from Class 30 gray cast iron, as cast. The
2. Summary of Test Method
structure is mostly pearlite with small amounts of ferrite and type A
graphite. Brinnell hardness is 179–217. The chips are made using a clean,
2.1 Cast iron chips are placed in a petri dish containing a
oil free jobbers length high speed drill of 29/64 in. diameter with 118°
filter paper and diluted metalworking fluid. The dish is covered
plain point, 29° helix and 12–15° clearance. Rotational speed should be
and allowed to stand overnight. The amount of rust stain on the
500 rpm at a feed rate of 0.015 in./rev. Hand feeding is not permissible.
filter paper is an indication of the corrosion control provided by
The chips are sieved on 5 and 18-mesh sieves and those retained on the
the fluid.
18-mesh sieve are immediately stored in air-tight pint glass bottles. Each
drilling is given a batch number. The bottle labels bear this batch number
3. Significance and Use
and the date of filling.
3.1 The results obtained by this test are a useful guideline in
5.2 Synthetic Hard Water, 20,000 mg/L stock solution
determining the ability of water diluted metalworking fluids to
prepared by dissolving 29.4 g reagent grade (ACS standard)
prevent or minimize rust under specific conditions. There is
CaCl ·2H O in 1 L of freshly boiled distilled water. A moderate
2 2
usually a relationship between the results of this test and a
hardness water is necessary in this test (100 ppm as CaCO ,71
similar ability of the subject coolant to prevent rust on nested
mg/L as chloride), and can be prepared at the time of the test
parts or in drilled holes containing chips, etc. It must be
by diluting the stock hard water 0.5 % in distilled water.
understood, however, that conditions, metal types, etc. found in
5.3 Metalworking Fluid of Interest.
practice will not correlate quantitatively with these controlled
laboratory conditions. The procedure may not be able to 6. Preparation of Diluted Metalworking Fluid
differentiate between two products with poor rust control due
6.1 Prepare 50 mL of fluid at each desired concentration by
to the wide spacing between test dilutions.
weight % in the 100 mg/L hardness water described above. The
water must be at room temperature as described in 7.1. Always
4. Apparatus
add the metalworking fluid concentrates into the water.
4.1 Disposable Petri Dishes, 35 by 10 mm plastic, with lids
6.2 The dilutions tested will be in weight % as follows:
No. 8-757-100A.
0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 7 and 10 % (1)
4.2 Glass-Fiber Filter Paper, Whatman No. 934-AH,
Each dilution must be separately prepared. Stock emulsions
3.2-cm diameter.
subsequently diluted must not be used.
4.3 Glass Stirring Rod.
6.3 Cap the bottle and shake vigorously until dispersion is
complete.
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee
D02.Lon Industrial Lubricants.
Current edition approved Sept. 15, 1992. Published November 1992. Originally Available from IAMS Inc., Technical Center, 1111 Edison Drive, Cincinnati,
published as D 4627–86. Last previous edition D 4627–86. OH 45216-2265.
NOTICE:¬This¬stan
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