ASTM G33-99(2010)

Standard Practice for Recording Data from Atmospheric Corrosion Tests of Metallic-Coated Steel Specimens

SIGNIFICANCE AND USE
Use of this practice will maximize the benefits to be gained from atmospheric testing of metallic-coated steel. It will also aid in comparing results from one location to another where similar tests have been conducted.
SCOPE
1.1 This practice covers a procedure for recording data of atmospheric corrosion tests of metallic-coated steel specimens. Its objective is the assurance of (1) complete identification of materials before testing, (2) objective reporting of material appearance during visual inspections, and (3) adequate photographic, micrographic, and chemical laboratory examinations at specific stages of deterioration, and at the end of the tests.
1.2 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

• Status: Historical
• Publication Date: 30-Apr-2010
• ICS: 77.060 - Corrosion of metals
• Technical Committee: G01 - Corrosion of Metals
• Drafting Committee: G01.04 - Corrosion of Metals in Natural Atmospheric and Aqueous Environments

Relations

• Replaces: ASTM G33-99(2004) - Standard Practice for Recording Data from Atmospheric Corrosion Tests of Metallic-Coated Steel Specimens
• Effective Date: 01-May-2010
• Referred By: ASTM G50-20 - Standard Practice for Conducting Atmospheric Corrosion Tests on Metals
• Effective Date: 01-May-2010
• Referred By: ASTM G109-23 - Standard Test Methods for Determining Effects of Chemical Admixtures on Corrosion of Embedded Steel Reinforcement in Concrete Exposed to Chloride Environments
• Effective Date: 01-May-2010
• Referred By: ASTM G1-03(2017)e1 - Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
• Effective Date: 01-May-2010

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: G33 − 99(Reapproved 2010)
Standard Practice for
Recording Data from Atmospheric Corrosion Tests of
Metallic-Coated Steel Specimens
This standard is issued under the fixed designation G33; 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.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Data to be Recorded Before Testing
1.1 This practice covers a procedure for recording data of
4.1 Material Characteristics:
atmospheric corrosion tests of metallic-coated steel specimens. 4.1.1 Coating and Basis Metal:
Its objective is the assurance of (1) complete identification of
4.1.1.1 Type of coating (zinc, aluminum, nickel-chromium,
materials before testing, (2) objective reporting of material and so forth).
appearance during visual inspections, and (3) adequate
4.1.1.2 Method of application (hot-dip, electroplated,
photographic, micrographic, and chemical laboratory examina-
electroless, mechanical plated, and so forth),
tions at specific stages of deterioration, and at the end of the
(1) Area coated (if not 100 % of surface),
tests.
(2) Pre-treatment (basis metal: flux, sand-blast, and so
forth), and
1.2 This standard does not purport to address all of the
(3) Post-treatment (heating, sealing, and so forth),
safety concerns, if any, associated with its use. It is the
4.1.1.3 Coating composition,
responsibility of the user of this standard to establish appro-
4.1.1.4 Basis metal product.
priate safety and health practices and determine the applica-
(1) Basis metal composition, and
bility of regulatory limitations prior to use.
(2) Metallurgical history prior to coating (if any).
2. Referenced Documents
4.1.1.5 Chemical treatment of coating.
4.1.1.6 Black and white photograph of typical surface area
2.1 ASTM Standards:
illustrating texture (1:1 magnification ratio).
A90/A90M Test Method for Weight [Mass] of Coating on
4.1.1.7 Micrograph of typical coating cross section (magni-
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
fication and etchant to be specified).
A428/A428M Test Method for Weight [Mass] of Coating on
4.1.2 Coating Weight and Thickness:
Aluminum-Coated Iron or Steel Articles
4.1.2.1 Weight by stripping. (See Test Method A90/A90M
E376 Practice for Measuring Coating Thickness by
or A428/A428M.)
Magnetic-Field or Eddy-Current (Electromagnetic) Test-
(1) Method.
ing Methods
4.1.2.2 Measured Thickness.
G46 Guide for Examination and Evaluation of Pitting Cor-
(1) Method (for example, eddy current, back scattering,
rosion
magnetic),
3. Significance and Use
NOTE 1—If a magnetic type instrument is used, refer to Practice E376.
3.1 Use of this practice will maximize the benefits to be
(2) Number of determinations,
gainedfromatmospherictestingofmetallic-coatedsteel.Itwill
(3) Mean,
also aid in comparing results from one location to another
(4) Standard deviation, and
where similar tests have been conducted.
(5) Range (spread of determinations).
4.2 Specimen Identification and Exposure Location:
4.2.1 Marking (method to be specified).
This practice is under the jurisdiction of ASTM Committee G01 on Corrosion
of Metals and is the direct responsibility of Subcommittee G01.04 on Atmospheric
4.2.2 Specimen position in test area.
Corrosion.
4.2.3 Angle of exposure from horizontal.
Current edition approved May 1, 2010. Published May 2010. Originally
4.2.4 Direction of specimen faces.
approved in 1972. Last previous edition approved in 2004 as G33–99(2004). DOI:
10.1520/G0033-99R10.
4.2.5 Location of test area.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.6 Description of test area (location of nearby industry,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
ocean,andsoforth,andrecordeddataonspecificcontaminants
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. where possible).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
G33 − 99 (2010)
4.2.7 Exposure starting date: (3) Cracking—Any fissure in the coating other than a
4.2.7.1 Weather conditions (for example, bright, cloudy, mechanical cut,
sunshine, rain, and so forth), (4) Checking—Cracking in a cross-hatch manner resem-
bling mud cracking,
4.3 Specimen Characteristics:
(5) Rust—Corrosion products of iron characterized by
4.3.1 Description (sheet, wire, hardware, and so forth).
rough, reddish brown particles. Rust is always rough to the
4.3.2 Specimen size:
touch,
4.3.2.1 Specimen surface dimensions.
(6) Tubercles—Knob-like protrusions of corrosion prod-
4.3.2.2 Gage or thickness.
ucts,
4.3.3 Specimen weight (when applicable).
(7) Nodules—Little lumps, and
4.3.4 Edge condition (to be specified).
(8) Pits—Cavities or holes in the metal surface.
4.3.5 Specimen preparation (method of cleaning).
5.3.3.2 Blisters, cracks, nodules, tubercles, and pits should
4.3.6 Surface appearance (verbal description, color, texture,
be reported by number and size. Peeling, checking, and rust
and so forth) (see 5.3).
should be reported by percent area affected.
5. Data to be Recorded During Field Inspections
6. Data to Be Recorded When Samples Are Removed at
5.1 Specimen Identification:
the Conclusion of the Test
5.1.1 Marking.
6.1 Specimen Iden
...