ASTM C810-90(2011)e1

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

SIGNIFICANCE AND USE
This test method is an accurate and rapid means for measuring nickel deposits on steel sample plates and such parts that can be fitted into the X-ray spectrometer. Its accuracy extends over a wide range of nickel deposits.
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 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Mar-2011
• ICS: 25.220.20 - Surface treatment
• Technical Committee: B08 - Metallic and Inorganic Coatings
• Drafting Committee: B08.12 - Materials for Porcelain Enamel and Ceramic-Metal Systems

Relations

• Replaces: ASTM C810-90(2006) - Standard Test Method for Nickel on Steel for Porcelain Enameling by X-Ray Emission Spectrometry
• Effective Date: 01-Apr-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
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Designation: C810 − 90 (Reapproved 2011)
Standard Test Method for
Nickel on Steel for Porcelain Enameling by X-Ray Emission
Spectrometry
This standard is issued under the fixed designation C810; 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 (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Test Method was corrected editorially in 2011
INTRODUCTION
It is important that a nickel layer, of the proper amount, be applied to steel parts prior to applying
a —direct-onǁ covercoat porcelain enamel (i.e., no groundcoat underneath). This standard test is to
determine the amount of nickel on the steel using Xray emission spectrometry. There is also an
alternative wet chemical method – Method C715. In some cases both tests may be run to develop
comparative data.
1. Scope 3. Summary of Test Method
1.1 This test method covers the measurement of the amount 3.1 Steel samples coated with a light nickel deposit are
of nickel deposited on sheet steel during its preparation for inserted in the sample position of an X-ray spectrometer. The
porcelain enameling. It is an X-ray emission method used for count rate for nickel is measured and converted by means of a
2 2
testing sample panels or certain commercial parts.
calibration curve to g/m (g/f ).
2 2
NOTE 1—An alternative wet chemical method is Test Method C715.
NOTE 2—1 m = 10.75 ft . Industry usage is typically in mixed units,
grams per square foot. For example, 0.10 g/ft equals a little more than 1
1.2 The values stated in inch-pound units are to be regarded 2
g/m .
as the standard. The values given in parentheses are for
information only.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 This test method is an accurate and rapid means for
safety concerns, if any, associated with its use. It is the
measuringnickeldepositsonsteelsampleplatesandsuchparts
responsibility of the user of this standard to establish appro-
that can be fitted into the X-ray spectrometer. Its accuracy
priate safety and health practices and determine the applica-
extends over a wide range of nickel deposits.
bility of regulatory limitations prior to use. For a specific
hazards statement, see Section 7.
5. Interferences
2. Referenced Documents 5.1 There are no interferences from other elements present.
However, low values can result from absorption of the X rays
2.1 ASTM Standards:
by overlaying material. Grease on the sample or rust due to
C715 Test Method for Nickel on Steel for Porcelain Enam-
storage in humid areas are examples of such material. Low
eling by Photometric Analysis
results are also obtained on de-enameled samples because the
nickel deposit is converted to a nickel iron alloy at enameling
temperatures. The presence of the iron in the alloy layer
ThistestmethodisunderthejurisdictionofASTMCommitteeB08onMetallic
absorbs some of the X radiation and accounts for the lower
and Inorganic Coatingsand is the direct responsibility of Subcommittee B08.12 on
result.
Materials for Porcelain Enamel and Ceramic-Metal Systems.
Current edition approved April 1, 2011. Published April 2011. Originally
approved in 1975. Last previous edition approved in 2006 as C810 – 90 (2006).
6. Apparatus
DOI: 10.1520/C0810-90R11E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Suitable X-Ray Emission Spectrometer complete with
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
50-kV power supply goniometer, detector with pressure-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. regulated gas flow attachments, scaler-counter, lithium fluoride
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C810 − 90 (2011)
analyzing crystal, and 0.02° Soller slit collimator is required. 8.2 Prepare a parer mask which, when placed over each
About a 1-in. (25.4-mm) diameter area of the sample is plate, will show the areas measured by the X-ray spectrometer.
irradiated. The mask is used later to indicate the same areas for wet
determination of nickel deposition by Test Method C715.In
6.2 Special Sample Holder (Fig. 1), to permit insertion of a
thisway,comparativedataareobtainablebybothmeasurement
2 by 2-in. (51 by 51-mm) flat corner of a large flat sample.
methods on the same areas of the standard plates.
Alternatively, the standard sample holder supplied with the
equipment may be used, but the sample must be cut to 1.5 by 8.3 The spectrometer is set to the K-alpha line of nickel at
1.25 in. (38 by 32-mm). 1.66 A and the X-ray intensity in counts/s is scaled for each
measurement.Areference plate of Type 321 stainless steel (Cr
6.3 Steel Sheet
...