AS 2331.1.5-2001 PDF

Full title and description

AS 2331.1.5-2001 — Methods of test for metallic and related coatings — Method 1.5: Local thickness tests — Beta‑backscatter method. This standard specifies a non‑destructive test method using beta‑backscatter gauges to measure the local thickness of metallic and non‑metallic coatings on metallic and non‑metallic substrates.

Abstract

Sets out the procedure for measuring coating thickness with beta‑backscatter instruments, including instrument use, calibration principles and limitations. The method requires a sufficient difference in (equivalent) atomic number between coating and substrate for reliable results and highlights radiation safety precautions because beta‑backscatter gauges employ radioactive sources. Appendices provide isotope characteristics and common atomic numbers for coatings and substrates.

General information

• Status: Current (reconfirmed by Standards Australia on 07 April 2017).
• Publication date: 12 November 2001.
• Publisher: Standards Australia.
• ICS / categories: Surface treatment and coating; Metallic coatings (ICS classification commonly mapped under 25.220.40 / surface treatment and coating classifications).
• Edition / version: Second edition (2001).
• Number of pages: 15 pages (PDF/printed product details).

Scope

This Standard specifies a method for the non‑destructive measurement of coating thicknesses using beta‑backscatter gauges. It applies to both metallic and non‑metallic coatings on metallic and non‑metallic substrates, provided the coating and substrate differ sufficiently in (equivalent) atomic number to permit the beta‑backscatter technique. The Standard includes cautionary guidance on radiation safety and notes on instrument isotopes and typical atomic numbers used for reference.

Key topics and requirements

• Non‑destructive local thickness measurement using beta‑backscatter gauges.
• Requirement that coating and substrate atomic numbers (or equivalent) differ sufficiently for reliable measurement.
• Instrument calibration and use instructions to ensure accuracy and repeatability.
• Radiation safety warnings and regulatory compliance when handling beta sources (appendix on isotope characteristics).
• Reference tables/examples of atomic numbers for commonly used coatings and substrates (to assist method application and interpretation).

Typical use and users

Used by quality control and inspection technicians in electroplating and surface‑finishing facilities, metallurgical and coatings laboratories, inspection bodies, and manufacturers who need rapid, non‑destructive local thickness checks (for example plating shops, electronics finishers, automotive and aerospace component suppliers). It is also used by technical auditors and R&D teams validating coating processes.

Related standards

Part of the AS 2331 series (Methods of test for metallic and related coatings). Commonly referenced companion standards include AS 2331.1.4 (magnetic induction and eddy current local thickness methods), AS 2331.1.3 (magnetic method), AS 2331.2.1 (dissolution methods for average thickness/mass), and other AS 2331.x parts in the 2001 suite. Historical draft and consolidated documents that led to the 2001 series are also noted in Standards Australia records.

Keywords

beta‑backscatter, coating thickness, non‑destructive test (NDT), metallic coatings, local thickness, gauge calibration, radiation safety, Standards Australia, AS 2331.

FAQ

Q: What is this standard?

A: AS 2331.1.5-2001 is a Standards Australia test method that specifies the beta‑backscatter technique for measuring local coating thickness on various substrates.

Q: What does it cover?

A: It covers the measurement procedure, instrument use and calibration, applicability limits (atomic number differences), interpretation guidance and safety considerations for beta radiation sources.

Q: Who typically uses it?

A: Coating and plating inspectors, QC laboratories, manufacturers of plated/ coated components, technical auditors and researchers who require rapid, non‑destructive local thickness assessments.

Q: Is it current or superseded?

A: As published in 2001, AS 2331.1.5-2001 was reconfirmed by Standards Australia on 07 April 2017 and is listed as current in several standards catalogues. Users should check Standards Australia or their national standards body for any editions or amendments published after that reconfirmation date.

Q: Is it part of a series?

A: Yes — it is one method within the AS 2331 series (Methods of test for metallic and related coatings), which contains multiple parts covering micrographic, magnetic, eddy current and other thickness and mass measurement methods.

Q: What are the key keywords?

A: Beta‑backscatter, coating thickness, NDT, metallic coatings, gauge calibration, radiation safety, AS 2331.