ASTM E1417/E1417M-21e1 PDF

Full title and description

ASTM E1417/E1417M-21e1 — Standard Practice for Liquid Penetrant Testing. This practice establishes the minimum requirements and basic parameters for controlling the application of the liquid penetrant (penetrant) method used to detect surface‑opening discontinuities in nonporous metal and nonmetal components. It is written to be specified on engineering drawings, specifications, or contracts and is intended to be supplemented by a detailed procedure for inspection execution.

Abstract

This standard defines the minimum procedural, materials, equipment, and documentation requirements for performing liquid penetrant examinations on components that are nonporous. It covers the major process steps (surface preparation/cleaning, penetrant application and dwell, removal, developer application, inspection, and reporting), acceptance considerations, units of measurement (SI and inch‑pound treated as separate systems), and cautions for nonmetallic materials. The designation “-21e1” indicates the 2021 revision with an editorial update.

General information

• Status: Active
• Publication date: September 1, 2021 (editorial update e1 published/issued later in 2021; editorial correction noted December 2021)
• Publisher: ASTM International
• ICS / categories: 19.040 — Non-destructive testing
• Edition / version: E1417/E1417M-21e1 (2021 revision with editorial change e1)
• Number of pages: 12

Scope

The practice establishes the minimum requirements for conducting liquid penetrant examinations of nonporous metal and nonmetal components for in‑process, final, and maintenance (in‑service) inspections. It applies to detection of surface‑open or surface‑connected discontinuities (for example: cracks, laps, cold shuts, lack of fusion, porosity, and certain forms of corrosion). The standard notes special precautions for thermoplastic or other sensitive nonmetallic materials and clarifies that SI and inch‑pound units are to be used independently.

Key topics and requirements

• Process steps: surface cleaning/preparation, penetrant application, dwell time, penetrant removal, developer application, inspection and evaluation, and reporting.
• Materials: selection and control of penetrants, cleaners/removers, and developers appropriate to the substrate and the examination method (visible dye or fluorescent)
• Equipment and environmental controls: lighting (UV‑A for fluorescent penetrants), inspection booths, temperature considerations, and compatibility with substrates
• Performance and acceptance criteria: identification and classification of indications, guidance for distinguishing relevant indications from nonrelevant indications
• Units and measurement: SI and inch‑pound units provided separately; do not combine values from both systems
• Safety and material compatibility cautions: warnings about elevated temperatures and potential deleterious effects of chemicals on plastics and other nonmetals
• Requirement to supplement the practice with a detailed procedure and references to other practices/guides for procedural development and personnel qualification
• Replacement note: replaces MIL‑STD‑6866 and aligns terminology (e.g., “blacklight” updated to “UV‑A” per current terminology)

Typical use and users

Used by nondestructive testing (NDT) engineers, NDT technicians and inspectors, quality assurance personnel, manufacturing and maintenance organizations, and procurement/engineering groups that specify or perform liquid penetrant examinations. Common industries include aerospace, automotive, power generation, petrochemical, heavy fabrication, and military/defense maintenance.

Related standards

Commonly referenced documents and related standards include ASTM E165/E165M (guidance for developing procedures), ASTM E1316 (NDT terminology), ISO 3452 (liquid penetrant testing), ASNT and industry personnel qualification documents (for example SNT‑TC‑1A or ANSI/ASNT CP‑189), and product/qualification specifications such as AMS/QQ‑series and other applicable material or process specifications.

Keywords

liquid penetrant; penetrant testing; dye penetrant; fluorescent penetrant; NDT; nondestructive testing; surface inspection; E1417; inspection procedure; developer; dwell time; UV‑A; surface discontinuities

FAQ

Q: What is this standard?

A: ASTM E1417/E1417M-21e1 is a practice that sets the minimum requirements for performing liquid penetrant examinations to detect surface‑open discontinuities in nonporous metal and nonmetal components.

Q: What does it cover?

A: It covers the overarching requirements for the penetrant process including material selection, equipment and lighting, procedural steps (cleaning, application, dwell, removal, developer, inspection), measurement units, safety cautions, and the need for a detailed procedure that supplements this practice.

Q: Who typically uses it?

A: NDT technicians and inspectors, QA/QC engineers, procurement and design engineers, and maintenance personnel in industries such as aerospace, automotive, power, petrochemical, heavy manufacturing, and defense.

Q: Is it current or superseded?

A: The designation E1417/E1417M-21e1 indicates the 2021 revision with an editorial update (e1). As provided here the standard is active (2021 edition with editorial correction). Users should confirm directly with ASTM for any later revisions or amendments.

Q: Is it part of a series?

A: It is part of the ASTM E07 committee suite of nondestructive testing standards and is commonly used together with other NDT standards and guides (for example E165/E165M and E1316) and relevant industry specifications.

Q: What are the key keywords?

A: liquid penetrant, penetrant testing, dye/fluorescent penetrant, surface discontinuities, NDT, UV‑A, inspection procedure, developer, dwell time.