# ASTM D4417

Source: https://coatmentor.com/standards/astm-d4417/ · Updated 2026-10-14

Field measurement of the surface profile of blast-cleaned steel.

**Publisher**: ASTM International

**Area**: Surface preparation and conditions

ASTM D4417 gives four field methods:

- **Method A:** visual comparison with a profile comparator.
- **Method B:** a depth micrometer with a pointed probe.
- **Method C:** replica tape read with a spring micrometer.
- **Method D:** a portable stylus instrument that reports Rt and peak count.

## Replica tape in practice

Subtract the 2 mil (50.8 µm) of incompressible film from the micrometer reading, or set the gauge to do it. Coarse tape covers 20–64 µm (0.8–2.5 mils) and X-Coarse 38–115 µm (1.5–4.5 mils). One measurement is the mean of two readings. The specification gives the profile range and how many measurements make a result.

## Where the methods are named

- SSPC-SP 15 and SP 11 need a profile of at least 25 µm (1 mil) after power-tool cleaning. SP 15 measures it by Method B unless the specification says otherwise; SP 11 by Method B, C or D.
- Method D replaced ASTM D7127, which ASTM withdrew in 2021.
- The CIP Level 1 exam guide names ASTM D4417 among its standards.

## Common mistake

Saying that D4417 has three methods. It has had four since 2021.

**Use it:** [Practical station: replica tape](https://coatmentor.com/practical/)

**10** practice items in the members area mention ASTM D4417 (CIP 1: 5 · CIP 2: 3 · FROSIO written: 2).

## Related

- **Concepts:** [Surface profile (anchor pattern)](https://coatmentor.com/learn/surface-profile/)
- **Standards:** [ISO 8503](https://coatmentor.com/standards/iso-8503/)
- **Defects:** [Pinpoint rusting](https://coatmentor.com/defects/pinpoint-rusting/)

## About this page

This page describes the subject of ASTM D4417 in our own words; it does not reproduce the standard. For the full text, buy the current edition from ASTM International. Checked on 2026-10-14; errors go in the [corrections log](https://coatmentor.com/method/). CoatMentor is an independent study aid. It is not affiliated with ISO, AMPP, SSPC, NACE International, ASTM or FROSIO.