ASTM E1112-00 (2018) PDF

Full title and description

ASTM E1112-00 (Reapproved 2018) — Standard Practice for Selection, Calibration, and Use of Lebow Model LFC-15 and Similar Instruments for Measuring Hydrogen Permeation in Materials. This practice provides guidance on the selection, calibration, operation, and quality assurance of laboratory instruments used to measure hydrogen permeation and related parameters in metals and alloys, emphasizing procedures for consistent, reproducible testing and reporting.

Abstract

This practice describes recommended procedures for selecting, calibrating, and using instruments (notably the Lebow LFC-15 type and similar devices) for hydrogen permeation testing. It covers instrument setup, calibration routines, verification steps, common sources of error, and recommendations for data acquisition and documentation. The aim is to improve comparability of hydrogen permeation data among laboratories by standardizing instrument-related practices rather than prescribing a specific test method for permeation measurement.

General information

• Status: Reapproved (2018) of original 2000 publication
• Publication date: 2000 (reapproved 2018)
• Publisher: ASTM International
• ICS / categories: 71.040 (Chemical engineering. Electrochemical engineering); Materials testing
• Edition / version: E1112-00 (2018 reapproval)
• Number of pages: Typically 6–10 pages (short ASTM practice)

Scope

This practice applies to laboratory instruments used to measure hydrogen permeation and related responses in metals and alloys, focusing on the Lebow Model LFC-15 and equipment of similar design. It addresses instrument selection criteria, calibration procedures, performance checks, and operational practices needed to obtain reliable and repeatable permeation measurements. The practice is intended as supporting guidance for labs performing hydrogen permeation testing rather than a complete test method for determining absolute permeation coefficients.

Key topics and requirements

• Guidance on instrument selection and suitability for hydrogen permeation measurements
• Recommended calibration procedures and calibration gas/flow verification
• Performance verification and routine checks to identify drift or malfunction
• Recommended data acquisition, signal processing, and documentation practices
• Identification and mitigation of common error sources (leaks, temperature instability, membrane preparation, background signals)
• Quality assurance measures and recommended frequency of calibration/verification

Typical use and users

This practice is used by materials testing laboratories, corrosion and hydrogen embrittlement researchers, quality assurance and R&D groups in metallurgy and petrochemical industries, and instrument manufacturers or service providers calibrating hydrogen permeation equipment. Typical users include laboratory technicians, test engineers, and scientists responsible for instrument setup, calibration, and validation prior to carrying out hydrogen permeation experiments.

Related standards

Related documents include ASTM standards and practices covering hydrogen permeation and embrittlement testing, instrument calibration, and reporting for metals — for example other ASTM permeation test methods and practices, corrosion testing standards, and manufacturer instructions for the Lebow LFC series instruments. Laboratories often use this practice in conjunction with specific test methods that quantify permeation coefficients or diffusivity.

Keywords

hydrogen permeation, Lebow LFC-15, instrument calibration, permeation measurement, hydrogen embrittlement, laboratory practice, test instrument verification, calibration routine

FAQ

Q: What is this standard?

A: ASTM E1112-00 (Reapproved 2018) is an ASTM practice giving guidance on the selection, calibration, and use of Lebow Model LFC-15 and similar instruments for hydrogen permeation measurements in materials.

Q: What does it cover?

A: It covers instrument selection criteria, calibration procedures, routine performance checks, common error sources and mitigation, data acquisition recommendations, and documentation practices to ensure reliable, repeatable permeation-related measurements.

Q: Who typically uses it?

A: Materials testing laboratories, corrosion and hydrogen embrittlement researchers, instrument manufacturers and service technicians, and quality/R&D personnel in industries working with hydrogen and metals.

Q: Is it current or superseded?

A: The practice was originally published in 2000 and was reapproved in 2018; users should consult ASTM for the latest status and any subsequent revisions or related standards.

Q: Is it part of a series?

A: It is a standalone ASTM practice intended to complement other ASTM permeation and hydrogen embrittlement test standards and related calibration practices rather than being part of a numbered series.

Q: What are the key keywords?

A: Hydrogen permeation, Lebow LFC-15, calibration, instrument verification, permeation testing, hydrogen embrittlement.