ASTM C810-90(1995)

Standard Test Method for Nickel on Steel for Porcelain Enameling by X-Ray Emission Spectrometry

SCOPE
1.1 This test method covers the measurement of the amount of nickel deposited on sheet steel during its preparation for porcelain enameling. It is an X-ray emission method used for testing sample panels or certain commercial parts.
Note 1--An alternative wet chemical method is Test Method C715.
1.2 Values stated in inch-pound units are to be regarded as the standard. Values in parentheses are provided for information only.
1.3 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. For a specific hazards statement, see Section 7.

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 C810-90(2000) - Standard Test Method for Nickel on Steel for Porcelain Enameling by X-Ray Emission Spectrometry
• 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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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 810 – 90 (Reapproved 1995)
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 X-Ray Emission
Spectrometry
This standard is issued under the fixed designation C 810; 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 5. Interferences
1.1 This test method covers the measurement of the amount 5.1 There are no interferences from other elements present.
of nickel deposited on sheet steel during its preparation for However, low values can result from absorption of the X rays
porcelain enameling. It is an X-ray emission method used for by overlaying material. Grease on the sample or rust due to
testing sample panels or certain commercial parts. storage in humid areas are examples of such material. Low
results are also obtained on de-enameled samples because the
NOTE 1—An alternative wet chemical method is Test Method C 715.
nickel deposit is converted to a nickel iron alloy at enameling
1.2 The values stated in inch-pound units are to be regarded
temperatures. The presence of the iron in the alloy layer
as the standard. The values given in parentheses are for
absorbs some of the X radiation and accounts for the lower
information only.
result.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 6. Apparatus
responsibility of the user of this standard to establish appro-
6.1 Suitable X-Ray Emission Spectrometer complete with
priate safety and health practices and determine the applica-
50-kV power supply goniometer, detector with pressure-
bility of regulatory limitations prior to use. For a specific
regulated gas flow attachments, scaler-counter, lithium fluoride
hazards statement, see Section 7.
analyzing crystal, and 0.02° Soller slit collimator is required.
About a 1-in. (25.4-mm) diameter area of the sample is
2. Referenced Documents
irradiated.
2.1 ASTM Standards:
6.2 Special Sample Holder (Fig. 1), to permit insertion of a
C 715 Test Method for Nickel on Steel for Porcelain Enam-
2 by 2-in. (51 by 51-mm) flat corner of a large flat sample.
eling by Photometric Analysis
Alternatively, the standard sample holder supplied with the
equipment may be used, but the sample must be cut to 1.5 by
3. Summary of Test Method
1.25 in. (38 by 32-mm).
3.1 Steel samples coated with a light nickel deposit are
6.3 Steel Sheets with various amounts of nickel deposits are
inserted in the sample position of an X-ray spectrometer. The
required for calibration and standardization.
count rate for nickel is measured and converted by means of a
6.4 Nickel-Base Alloy Sample, such as 18-8 stainless steel,
2 2
calibration curve to g/m (g/f ).
for routine calibration.
2 2
NOTE 2—1 m 5 10.75 ft . Industry usage is typically in mixed units,
2 7. Hazards
grams per square foot. For example, 0.10 g/ft equals a little more than 1
g/m .
7.1 Equipment should be periodically checked for radiation
leaks to ensure against exposure to X radiation.
4. Significance and Use
8. Calibration and Standardization
4.1 This test method is an accurate and rapid means for
measuring nickel deposits on steel sample plates and such parts
8.1 Prepare approximately 18 standard plates by cleaning
that can be fitted into the X-ray spectrometer. Its accuracy
and pickling 4 by 6 in. (102 by 152 mm) commercial
extends over a wide range of nickel deposits.
enameling iron stock (any steel used in commercial enameling
operations may be used) and applying nickel in the conven-
tional manner for varying treatment times to give a range of
2 2
nickel deposition from 0 to 3 g/m (0 to 0.4 g/ft ).
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
Materials for Porcelain Enamel and Ceramic-Metal Systems.
Current edition approved Feb. 23, 1990. Published April 1990. Originally
Available from the following: (1) Philips Electronic Instruments, 750 S. Fulton
e1
published as C 810 – 75. Last previous edition C 810 – 75 (
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