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ASTM A309-01(2012)
Standard Test Method for Weight and Composition of Coating on Terne Sheet by the Triple-Spot Test (Withdrawn 2015)
Automaticky přeložený název:
Standardní zkušební metoda pro hmotnost a složení potahu na Terne listu u Triple-Spot test
NORMA vydána dne 1.9.2012
Informace o normě:
Označení normy: ASTM A309-01(2012)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.9.2012
Kód zboží: NS-1963
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM A309-01(2012) :
Keywords:
coating composition, coating weight, metallic coatings, steel sheet&mdash,terne coated, terne coating, ICS Number Code 77.140.50 (Flat steel products and semi-products)
Doplňující informace
| Significance and Use | ||||||||
|
3.1 A coating of terne metal on iron or steel articles is intended to provide drawability, solderability, or corrosion resistance, or combination thereof, which can require different amounts of coating. Specifications for terne-coated sheets frequently provide for these different classes (weights) of coating so that purchasers can select that most suitable for their needs. This test method provides a means of determining the weight of coating for comparison with the material specification requirements. |
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| 1. Scope | ||||||||
|
1.1 This test method covers the determination of the weight and composition of coating on terne sheet by the triple-spot method. The following three procedures are described: 1.1.1 Procedure A—Stripping with sulfuric acid. 1.1.2 Procedure D—Stripping with hydrochloric acid and antimony trichloride. 1.1.3 Procedure E—Stripping with hydrobromic acid-bromine solution. 1.2 If the percent of tin in the
coating is required, stripping with hydrobromic acid-bromine is the
preferred procedure. Steel with a predeposited electrolytic nickel
coating requires a two-stage stripping method to determine total
tin content. If both the tin and lead percentage are required,
stripping with sulfuric acid is recommended, but caution is advised
since the sulfuric acid procedure has been found to produce high
tin results (see Section 11).
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.
Methods for Chemical Analysis of White
Metal Bearing Alloys (Withdrawn 1987) Practice for Conducting Interlaboratory
Studies of Methods for Chemical Analysis of Metals (Withdrawn
1997) Standard Practices for Apparatus,
Reagents, and Safety Considerations for Chemical Analysis of
Metals, Ores, and Related Materials Standard Specification for Steel Sheet,
Terne (Lead-Tin Alloy) Coated by the Hot-Dip Process (Withdrawn
2015) |
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