ASTM C715-90(1996)

Standard Test Method for Nickel on Steel for Porcelain Enameling by Photometric Analysis

SCOPE
1.1 This test method covers the determination of the amount of nickel deposited on sheet steel during its preparation for porcelain enameling. It is a photometric method commonly used on production parts and is suitable for determining the heavier nickel deposits that may be obtained during the processing of steel for one-coat enameling.
Note 1--An alternative X-ray emission spectrometry method is Test Method C810.
1.2 This standard does not purport to address all of the safety problems 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: 31-Dec-1999
• Technical Committee: B08 - Metallic and Inorganic Coatings
• Drafting Committee: B08.12 - Materials for Porcelain Enamel and Ceramic-Metal Systems

Relations

• Replaced By: ASTM C715-90(2000) - Standard Test Method for Nickel on Steel for Porcelain Enameling by Photometric Analysis
• Effective Date: 01-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 715 – 90 (Reapproved 1996)
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
Nickel on Steel for Porcelain Enameling by Photometric
Analysis
This standard is issued under the fixed designation C 715; 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.
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1. Scope area of 0.01 ft (0.000929 m ), a wall configuration as shown
in Fig. 1, and the lower portion beveled at a 45° angle (0.78
1.1 This test method covers the determination of the amount
rad) to reduce the contact area and ensure a better seal. The
of nickel deposited on sheet steel during its preparation for
metal outer ring shall weigh about 3.5 lb (1.5 kg), suitably
porcelain enameling. It is a photometric method commonly
machined to fit over the top of the rubber ring as shown in Fig.
used on production parts and is suitable for determining the
1.
heavier nickel deposits that may be obtained during the
4.2.1 The exact area covered by the rubber ring will
processing of steel for one-coat enameling.
gradually increase as the rubber ring itself is consumed by the
NOTE 1—An alternative X-ray emission spectrometry method is Test
acid reagent used. In the most accurate analysis, the area etched
Method C 810.
by the rubber ring shall be calculated occasionally, factored
1.2 This standard does not purport to address all of the
against the prescribed area, and that number applied to the
safety concerns, if any, associated with its use. It is the
reading obtained from the graph.
responsibility of the user of this standard to establish appro-
4.3 Aspirator, consisting of a calibrated 500-mL flask,
priate safety and health practices and determine the applica-
equipped with a twohole stopper, an aspirator bulb, and a
bility of regulatory limitations prior to use.
suction tube formed from 0.079-in. (2-mm) inside diameter
capillary glass tubing.
2. Referenced Documents
5. Reagents and Materials
2.1 ASTM Standards:
C 810 Test Method for Nickel on Steel for Porcelain Enam-
5.1 Reagent grade chemicals shall be used in all tests.
eling by X-Ray Emission Spectrometry
Unless otherwise indicated, it is intended that all reagents shall
E 30 Test Methods for Chemical Analysis of Steel, Cast
conform to the specifications of the Committee of Analytical
Iron, Open-Hearth Iron, and Wrought Iron
Reagents of the American Chemical Society. Other grades
E 60 Practice for Photometric and Spectrophotometric
may be used, provided it is first ascertained that the reagent is
Methods for Chemical Analysis of Metals
of sufficiently high purity to permit its use without lessening
the accuracy of the determination.
3. Significance and Use
5.2 Purity of Water—Use distilled or deionized water.
3.1 This test method is primarily used to control the nickel
5.3 Ammonium Hydroxide (sp gr 0.90)—Concentrated am-
dipping operation to ensure that the desired level of nickel
monium hydroxide (NH OH).
deposition is attained. It is also used to prepare test plates used
5.4 Ammonium Persulfate—(NH ) S O .
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for calibration in Test Method C 810.
5.5 Dimethylglyoxime—Prepare a 1 % solution of dimeth-
ylglyoxime in methyl alcohol or a 2.62 % solution of sodium
4. Apparatus
dimethylglyoximate in water (store in a polyethylene bottle).
4.1 Photoelectric Photometer, conforming to Practice E 60.
5.6 Hydrochloric Acid (1+5)—Dilute 1 vol of concentrated
4.2 Weighted Rubber Ring Assembly, required to confine
hydrochloric acid (HCl, sp gr 1.19) with 5 vol of water.
stripping agents to a definite area, consisting of a molded
5.7 Nickel Sulfate, Standard Solution—Dissolve 0.448 g of
rubber ring and a metal outer ring. The rubber ring shall have
nickel sulfate (NiSO ·6H O) in water. When the material is
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an inside diameter of 1.35 in. (34.3 mm) in order to encircle an
completely dissolved, cautiously add 10 mL of concentrated
H SO and transfer the solution to the 1000-mL flask. When
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This test method is under the jurisdiction of ASTM Committee B-8 on Metallic
and Inorganic Coatings and is the direct responsibility of Subcommittee B08.12 on Reagent Chemicals, American Chemical Society Specifications, American
Materials for Porcelain Enamel and Ceramic-Metal Systems. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Current edition approved Feb. 23, 1990. Published April 1990. Originally listed by the American Chemical Society, see Analar Standards for Laboratory
published as C 715 – 77. Last previous edition C 715 – 77 (1983). Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Annual Book of ASTM Standards, Vol 02.05. and Natio
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