ASTM-D4417 Historical Revision Information
Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel

ASTM-D4417 - 2014 EDITION - SUPERSEDED
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Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
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Scope

1.1 These test methods cover the description of techniques for measuring the profile of abrasive blast cleaned surfaces in the laboratory, field, or in the fabricating shop. There are additional techniques suitable for laboratory use not covered by these test methods.

1.2 Method B may also be appropriate to the measurement of profile produced by using power tools.

1.3 SSPC standard SSPC PA 17 provides additional guidance for determining conformance with surface profile requirements.

1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

4.1 The height of surface profile has been shown to be a factor in the performance of various coatings applied to steel. For this reason, surface profile should be measured prior to coating application to ensure that it meets that specified. The instruments described are readily portable and sufficiently sturdy for use in the field.

Note 1Optical microscope methods serve as a referee method for surface profile measurement methods A and B. Profile depth designations are based on the concept of mean maximum profile ( h max); this value is determined by averaging a given number (usually 20) of the highest peak to lowest valley measurements made in the field of view of a standard measuring microscope. This is done because of evidence that coatings performance in any one small area is primarily influenced by the highest surface features in that area and not by the average roughness.4

Keywords

abrasive; abrasive blast cleaning; anchor pattern; surface profile; surface roughness; ICS Number Code 17.040.20 (Properties of surfaces); 77.140.01 (Iron and steel products in general)

To find similar documents by ASTM Volume:

06.02 (Paint -- Products and Applications; Protective Coatings; Pipeline Coatings)

To find similar documents by classification:

17.040.20 (Properties of surfaces)

77.140.01 (Iron and steel products in general)

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Document Number

ASTM-D4417-14

Revision Level

2014 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

March 1, 2014

Document Type

Test Method

Page Count

4 pages

Committee Number

D01.46