ASTM D7548-09
(Test Method)Standard Test Method for Determination of Accelerated Iron Corrosion in Petroleum Products
Standard Test Method for Determination of Accelerated Iron Corrosion in Petroleum Products
SIGNIFICANCE AND USE
In general, wherever the possibility exists of water getting mixed with products/material (covered under 1.1) the results obtained by this test method will indicate the degree to which corrosion of iron components can be expected.
Test also determines the antirust properties of products/material (covered under 1.1) in preparation for the various stages through which the tested product may pass prior to or during its transport through a pipeline.
Test results are also meant to show whether or not the dosage levels and type of iron corrosion inhibitor added to a product/material (covered under 1.1) is sufficient for achieving the desired protection of affected assets such as storage tanks, process lines, and shipment systems.
SCOPE
1.1 This test method covers an accelerated laboratory and field procedure for the determination of corrosion of iron, in the presence of water, on samples such as gasoline and gasoline blended with 10% ethanol, E10 (Specification D 4814); gasoline-blend components (except butane); diesel fuel and biodiesel B5, except Grade No. 4-D (Specification D 975); biodiesel B6 to B20 (Specification D 7467); diesel-blend component such as light cycle-oil; No.1 fuel oil, No.2 fuel oil (Specification D 396); aviation turbine fuel (Specification D 1655).
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7548 − 09
StandardTest Method for
Determination of Accelerated Iron Corrosion in Petroleum
Products
This standard is issued under the fixed designation D7548; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D7467Specification for Diesel Fuel Oil, Biodiesel Blend
(B6 to B20)
1.1 This test method covers an accelerated laboratory and
G15TerminologyRelatingtoCorrosionandCorrosionTest-
field procedure for the determination of corrosion of iron, in
ing (Withdrawn 2010)
thepresenceofwater,onsamplessuchasgasolineandgasoline
2.2 Other Standards:
blended with 10% ethanol, E10 (Specification D4814);
gasoline-blend components (except butane); diesel fuel and 070 M20 of BS 970-1 or European Steel C22E number
1.1151Carbon and Carbon Manganese Steels including
biodiesel B5, except Grade No. 4-D (Specification D975);
biodiesel B6 to B20 (Specification D7467); diesel-blend com- Free Cutting Steels
ponent such as light cycle-oil; No.1 fuel oil, No.2 fuel oil
(Specification D396); aviation turbine fuel (Specification 3. Terminology
D1655).
3.1 Definitions:
3.1.1 corrosion, n—chemical or electrochemical reaction
1.2 The values stated in SI units are to be regarded as the
between a material, usually a metal, and its environment that
standard. The values in parentheses are for information only.
producesadeteriorationofthematerialanditsproperties. G15
1.3 This standard does not purport to address all of the
3.1.2 rust, n—corrosion product consisting primarily of
safety concerns, if any, associated with its use. It is the
hydrated iron oxide.
responsibility of the user of this standard to establish appro-
3.1.2.1 Discussion—Rust is a term properly applied only to
priate safety and health practices and determine the applica-
ferrous alloys. G15
bility of regulatory limitations prior to use.
3.2 Acronyms:
2. Referenced Documents
3.2.1 TP—temperature probe.
2.1 ASTM Standards:
4. Summary of Test Method
A108Specification for Steel Bar, Carbon and Alloy, Cold-
Finished
4.1 Apolishedironcorrosiontest-rodisimmersedin50mL
D97Test Method for Pour Point of Petroleum Products
of the sample being tested and heated to 37.8°C (100°F), at
D396Specification for Fuel Oils
which point 5 mLof reagent water,Type III or better, is added
D665Test Method for Rust-Preventing Characteristics of
tothesample.Sampletemperatureismaintainedbetween37to
Inhibited Mineral Oil in the Presence of Water
39°C (98 to 102°F), with the target being 37.8°C (100°F), for
D975Specification for Diesel Fuel Oils
1 h. At the end of the heating period, test-rod is removed,
D1193Specification for Reagent Water
rinsed, and examined for the degree/category of corrosion
D1655Specification for Aviation Turbine Fuels
against the “ASTM Iron Corrosion Rating Chart–Test Method
D4814Specification for Automotive Spark-Ignition Engine
D7548.”
Fuel
5. Significance and Use
5.1 In general, wherever the possibility exists of water
This test method is under the jurisdiction of ASTM Committee D02 on
getting mixed with products/material (covered under 1.1) the
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
results obtained by this test method will indicate the degree to
Subcommittee D02.14 on Stability and Cleanliness of Liquid Fuels.
which corrosion of iron components can be expected.
Current edition approved June 15, 2009. Published September 2009. DOI:
10.1520/D7548-09.
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 last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7548 − 09
5,7
5.2 Testalsodeterminestheantirustpropertiesofproducts/ 6.5.1 Holder, Ethanol-resistant plastic or PTFE. Total
material (covered under 1.1) in preparation for the various length: 63.5 mm (2.5 in.), with a 2-step handle at top which is
stages through which the tested product may pass prior to or disc-type, ~22.2 mm (0.875 in.) in diameter by 15.9 mm
during its transport through a pipeline. (0.625in.) thick. Below this is a circular step or rim which is
~17.5mm (0.69 in.) diameter by 6.4 mm (0.25 in.) thick. The
5.3 Test results are also meant to show whether or not the
stemportionoftheholderis~41.3mm(1.625in.)longby12.7
dosage levels and type of iron corrosion inhibitor added to a
mm (0.5 in.) in diameter, with a ~6.4 mm (0.25 in.) female-
product/material (covered under 1.1) is sufficient for achieving
threaded hole in the bottom to accept the male-threaded
the desired protection of affected assets such as storage tanks,
corrosion rod.
process lines, and shipment systems.
5,9
6.6 Temperature Probe, Digital, calibrated, with stem
6. Apparatus
about 200 mm (8 in.) long by 3.0 mm (0.125 in.) in diameter
4,5
and covering a temperature range of about 20°C (68°F) to at
6.1 Stirring Hotplate, Single or multi-position (see Ap-
least 60°C (140°F).
pendix X1), ceramic top, capable of accommodating Acceler-
ated Iron Corrosion Test (AICT) apparatus specified in A1.1.
NOTE3—Calibrated,digitaltemperatureprobe,orequivalentcalibrated
Stirrershouldbecapableofstirringatarateof900 6100rpm. temperature measurement device, covering a range of -50°C (-58°F) to
+300°C(+572°F)willbesuitable.Alternatively,calibratedthermocouples
6.2 Water Bath—Beaker, 150 to 200 mL capacity, borosili-
may be used.
cate glass, containing 100 mL of distilled water, or other type
6.7 Stirring Bar—Magnetic, PTFE (polytetrafluoro-
of water bath capable of accommodating Accelerated Iron
ethylene)-coated, 25.4 6 2.54 mm (1.0 6 0.1 in.) long by 8 6
Corrosion Test (AICT) apparatus specified in A1.1.
0.8 mm (0.31 6 0.03 in.) in diameter.
6.3 Test Jar—Cylindrical, clear glass, 90-mL capacity, flat
6.8 Syringe—Plastic, 5 mL, with 63.5 mm (2.5 in.) long
bottom,115to125mm(4.53to4.92in.)inheight,33.2to34.8
needle,5ccsyringeandneedle,oranyotherequivalentsyringe
mm (1.31 to 1.37 in.) outside diameter, 30.0 to 32.4 mm (1.18
and needle.
to 1.28 in.) inside diameter, 1.6 mm (0.06 in.) maximum wall
6.9 Timing Device—Electronic or manual, capable of mea-
thickness.
NOTE 1—The pour point test jar specified in Test Method D97 meets
suring the test duration with an accuracy of at least 1%.
this requirement.Atest jar meeting requirements of 6.3 and graduated at
6.10 Grinding and Polishing Apparatus—Any suitable
50 mL is more suitable.
apparatus, with a mounting or bench stand, capable of rotating
NOTE 2—Optionally, to prevent accidental breakage of the test jar, a
rubber O-ring, 32 mm (1.25 in.) inside diameter, and 3 mm (0.12 in.)
at1700to1800rpm,andhavingthemeanstomountasuitable
5,10
thick, could be slipped over the test jar up to about 25 mm (1.0 in.) below
chuck into which the corrosion test rod can be screwed in.
its rim.
See A1.4.
5,6
6.4 Cover, Test Jar—Plastic, such as high density poly-
ethylene (HDPE), with three holes, meeting dimensions and
7. Reagents and Materials
features seen and outlined in A1.2.
7.1 Reagent Water—TypeIIIorbetter,SpecificationD1193.
5,7,8
6.5 Corrosion Test Rod, With a plastic or polytetrafluo-
7.2 Wash Solvent.
roethylene(PTFE)holder;round,threadedsteelrod,taperedat
7.2.1 2,2,4-trimethylpentane (isooctane)—Minimum
oneend;81mm(3.19in.)long,includingthe12.7mm(0.5in.)
99.75% purity. (Warning—Flammable. Health hazard.)
long threaded portion, and 12.7 mm (0.5 in.) in diameter. See
7.2.2 Acetone—Minimum 99.5% purity. (Warning—
A1.3. Test rod should be made of steel conforming to Grade
Flammable. Health hazard.)
1015, 1018, 1020 or 1025 of the Specifications for Cold
7.3 Hydrochloric Acid (HCl)—Prepare 15% solution by
Finished Carbon Steel Bars and Shafting (Specification A108,
dissolving 42 mL of concentrated HCl in 100 mL distilled
or to 070 M20 of BS 970-1 or European Steel C22E number
water. (Warning—Corrosive. Burn hazard.)
1.1151). If these steels are unavailable, other equivalent steels
5,11
may be used, provided that they are satisfactory according to
7.4 Polishing Material—Abrasive cloth roll ; silicon
comparative tests using this test method.
carbide,C-100openmesh,38mmwidthby22.5mlength(1.5
in. by 25 yd) roll.
7.5 Magnifier—Lighted, 2× magnification power.
The sole source of supply of the apparatus “Super-Nuova” Multi position
stirring hot plate, Model No. SP135935Q known to the committee at this time is
7.6 Lintless Cloth or Tissue.
Thermo Fisher Scientific, 2000 Park Lane Dr., Pittsburgh, PA 15275-9952.
If you are aware of alternative suppliers, please provide this information to
ASTM International Headquarters. Your comments will receive careful consider-
ation at a meeting of the responsible technical committee, which you may attend. The sole source of supply of the apparatus, Part No. 14-648-44, known to the
Thesolesourceofsupplyoftheapparatusknowntothecommitteeatthistime committee at this time is Thermo Fisher Scientific, 81 Wyman St., Waltham, MA
isK&C Manufacturing, 210 S. Main, Newkirk, OK 74647. 02454.
7 10
The sole source of supply of the apparatus, Test rod and holder—Part No. The sole source of supply of the apparatus, Part No. K30100, known to the
K30130, known to the committee at this time is Koehler Instruments Co., 1595 committee at this time is Koehler Instrument Co., 1595 Sycamore Ave., Bohemia,
Sycamore Ave, Bohemia, NY 11716. NY 11716.
8 11
The sole source of supply of the apparatus, Test rod only—Part No. 408–A The sole source of supply of the apparatus, Part No. 8230A76, known to the
(SAE-1018),knowntothecommitteeatthistimeisMetaspecLLC,790WMayfield committee at this time is McMaster-Carr Supply Co., PO Box 4355, Chicago, IL
Blvd., San Antonio, TX 78211. 60680-4355.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.