ISO 10587-2000 PDF

Full title and description

ISO 10587:2000 — Metallic and other inorganic coatings — Test for residual embrittlement in both metallic‑coated and uncoated externally‑threaded articles and rods — Inclined wedge method. This International Standard specifies the inclined wedge test procedure used to detect residual hydrogen embrittlement or degradation in batches of plated or chemically processed externally‑threaded articles and rods.

Abstract

ISO 10587:2000 defines a statistical test method (the inclined wedge method) to determine the probability that a batch of barrel‑plated, autocatalytic‑plated, phosphated or chemically processed threaded articles, or rack‑plated threaded articles or rods, contains items affected by hydrogen embrittlement after hydrogen‑relief heat treatment. The method is intended for lot acceptance/rejection and process control (comparison of processing solutions, post‑bake regimes, etc.). It is applicable to steel threaded articles or rods with actual tensile strength ≥ 1 000 MPa (or surface‑hardened equivalents) and is explicitly not applicable to fasteners. The method can indicate embrittled items but does not guarantee complete freedom from embrittlement; Annex A provides guidance on hydrogen introduction sources.

General information

• Status: Published (confirmed on review).
• Publication date: February 2000 (Edition 1, 2000‑02).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.40 (Coatings and surface treatment).
• Edition / version: Edition 1 (2000).
• Number of pages: 8 (ISO published text).

Scope

Specifies the inclined wedge test for detecting residual hydrogen embrittlement in batches of externally‑threaded articles and rods that have undergone metallic or other inorganic coatings or chemical processing. Applicable to barrel and rack plated or chemically processed threaded articles/rods made of steel with tensile strength ≥ 1 000 MPa (or surface‑hardened equivalents). The test is performed after hydrogen‑relief heat treatment and may be used for lot acceptance/rejection or as a process control tool to assess plating/pickling/phosphating and baking procedures. The standard is not intended for use on general fasteners (see related fastener‑specific standards).

Key topics and requirements

• Test principle: assembly of test article with nut against a hardened inclined wedge and application of a measured tightening torque to impose a defined tensile/stress condition for an exposure period.
• Sampling and statistical approach for lot acceptance or rejection; typical sampling plans and survival grades (e.g., exposure times such as 48, 96, 200 h) are used to define acceptance confidence.
• Specification of mechanical set‑up: wedge, hardened filler plates and washer, thread engagement, torque determination (based on fraction of ultimate tensile load), and test temperature range.
• Exposure durations and classification of failures (cracks, breakage, transverse cracking, torque relaxation/retighten criteria); inspection techniques include visual, magnified, dye‑penetrant and magnetic particle where appropriate.
• Performed after hydrogen‑relief heat treatment; may be used to compare processing solutions and effectiveness of pre/post‑bake treatments to reduce mobile hydrogen.
• Limitations and safety: the method indicates embrittlement to the defined level but cannot guarantee complete absence of embrittlement; sudden breakage can create projectile hazards and appropriate shielding and safety measures are required during the full exposure period.
• Annex guidance: sources of hydrogen entry into threaded articles and process notes to help interpretation.

Typical use and users

Primary users are plating and surface‑treatment processors, metallurgical and quality control laboratories, manufacturers of externally‑threaded articles and rod (where applicable), procurement and QA engineers who need to verify batch integrity after plating/chemical processing, and R&D teams optimizing processing and post‑treatment bake schedules. Note: fastener manufacturers and users should consult fastener‑specific test methods where applicable.

Related standards

Standards commonly referenced together with or as complements to ISO 10587 include ISO 15330 (Preloading test for detection of hydrogen embrittlement — parallel bearing surface method) for fasteners, ISO 4042 (electroplated coating systems for fasteners and measures to reduce hydrogen embrittlement), ISO/TR 20491 (fundamentals of hydrogen embrittlement in steel fasteners — background guidance), and relevant ASTM methods such as ASTM B839 (inclined wedge method counterpart) and ASTM F519 (hydrogen embrittlement evaluation procedures). Users should select the method appropriate to the product type (threaded articles vs. fasteners) and contractual/specification requirements.

Keywords

hydrogen embrittlement, residual embrittlement, inclined wedge method, threaded articles, rack plating, barrel plating, electroplating, post‑bake, lot acceptance, sampling plan, process control, tensile strength ≥ 1000 MPa, inspection, safety.

FAQ

Q: What is this standard?

A: ISO 10587:2000 is an international test method (inclined wedge) for detecting residual hydrogen embrittlement in batches of metallic‑coated or chemically processed externally‑threaded articles and rods.

Q: What does it cover?

A: It covers the inclined wedge assembly and exposure procedure, torque/loading selection, sampling/statistical acceptance principles, failure criteria, inspection methods, safety considerations and guidance on hydrogen sources (Annex A). It is carried out after hydrogen‑relief heat treatment.

Q: Who typically uses it?

A: Plating and coating processors, QA/ metrology laboratories, manufacturers and purchasers of externally‑threaded articles and rods who need to verify residual embrittlement risk after processing; R&D groups optimizing plating and bake cycles also use it.

Q: Is it current or superseded?

A: ISO 10587 was published in February 2000 (Edition 1). The ISO bibliographic record indicates the publication has been reviewed and was confirmed (reviewed as current) during periodic review cycles (confirmed in the ISO review process). Users should check their national standards body or ISO store for the latest confirmation status before formal citation.

Q: Is it part of a series?

A: Not a numeric series, but ISO 10587 is part of the suite of standards and test methods addressing hydrogen embrittlement and coating acceptance. It is often used alongside fastener‑specific methods such as ISO 15330 and coating/fastener requirements in ISO 4042, and with ASTM equivalents where specified by procurement documents.

Q: What are the key keywords?

A: Hydrogen embrittlement, residual embrittlement, inclined wedge, threaded articles, barrel plating, rack plating, post‑bake, lot acceptance, statistical sampling, tensile strength ≥ 1000 MPa.