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For hot-dip galvanizing applications, it is possible to measure and verify the steel surface profile according to ASTM D, Standard Test. ASTM D – 11 Standard Test Methods for Field Measurement of Surface Profile of Blast – Download as PDF File .pdf), Text File .txt) or read. ASME B, Surface Texture (Surface Roughness, Waviness and Lay); ASTM D, Standard Test Methods for Measurement of Surface Profile of Blast.

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A number in parentheses indicates the year of last reapproval. Summary of Test Method 2.

f4417 If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Hold the gage by its base and press?

Differences in Surface Profile Measurements: ASTM D4417- Method B vs. Method C

Typical comparator surfaces are prepared with steel shot, steel grit, or sand or other nonmetallic abrasive, since the appearance of the pro? How is Surface Profile Depth Quantified?

October 18, Authored by Alana Hochstein.

By continuing to use our site, you accept our use of cookies To learn more, click Read More to view our Privacy and Cookies Policy. Note 1 — Optical microscope methods serve as a referee method for surface profile measurement methods A and B.

Updates to ASTM D | American Galvanizer’s Association

Visual Comparator – This test method, as well as the comparator discs available on the market, have stayed the same, and therefore there were no updates for this test method. To avoid these discrepancies, it is recommended that a single method be employed on a project.


Standards for Measurement of Surface Profile There are currently four primary standards for measurement of surface profile in steel surfaces. The distance from the bottoms of many of the deepest valleys awtm the tops of the highest peaks maximum pro? Inspection Instruments Pipeline Coatings — Volume 2: 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.

NOTE 2—The test methods measure different values and the qualitative rating on which the applicability was determined also measures a different value.

According to ASTM D, a minimum of 10 readings is obtained per area; the maximum surface profile is reported discarding obvious outliers. We use cookies to understand how you use our site and to improve your experience.

This method can be used to measure the surface profile depth that is zstm by abrasive blast cleaning or impact-type power tools.

Standards for Measurement of Surface Profile. Each area is marked giving the nominal pro? Your comments are invited either for revision of this f4417 or for additional standards and should be addressed to ASTM International Headquarters.

Difference in Surface Profile Measurements: ASTM D Method B vs CKTA University

The comparator areas are used with or without magni? For more information related to surface preparation as it relates to hot-dip galvanized steel, you can contact AGA Corrosion Engineer Alana Hochstein at ahochstein galvanizeit. Surface profile is defined x4417 a ashm of the maximum peak-to-valley depth created by abrasive impingement against a surface during abrasive blast cleaning operations, or by an impact-type power tool. This movement may be caused by expansion and contraction of the substrate due to temperature fluctuation, or live loads placed onto a structure; for example, traffic crossing a bridge.


A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Updates to ASTM D4417

Subtract the thickness of the noncompressible plastic? There are additional techniques suitable for laboratory use not covered by these test methods. Current edition approved May 10, The base of the instrument rests on the peaks of the surface profile while the cone-shaped point projects into the valley. Models from a few gage manufacturers are available that conform to this standard. Replica Tape – Although the technology has adtm mostly constant for replica tape since its introduction, industry research has addressed the sufficient number of readings required to achieve an accurate measurement.

Aztm material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel.

Instead, recording of the highest reading when using a depth micrometer most closely matches the same measurements produced using replica tape. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.