ISO 18413-2015 PDF

Full title and description

St ISO 18413-2015 — Hydraulic fluid power — Cleanliness of components — Inspection document and principles related to contaminant extraction and analysis, and data reporting. This International Standard defines the content of an inspection/acceptance document for hydraulic fluid power components, and provides guidance on extraction, analysis and reporting of particulate contamination found on wetted surfaces and volumes of components.

Abstract

ISO 18413:2015 specifies what an inspection document should contain when declaring the cleanliness requirement for a hydraulic component and the inspection method to verify that requirement. It gives guidelines for particle extraction methods, laboratory analysis approaches and data reporting formats used to quantify particulate contamination on wetted component surfaces and internal volumes. The standard does not set specific cleanliness levels (those are determined by the parties or via complementary standards) and excludes appearance defects and liquid or gaseous contamination.

General information

• Status: Published.
• Publication date: April 2015 (Edition 2, 2015).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.100.60 (Filters, seals and contamination of fluids).
• Edition / version: Edition 2 (2015).
• Number of pages: 46 pages (ISO edition).

Scope

ISO 18413:2015 applies to particulate contamination on the wetted surfaces and internal volumes of hydraulic fluid power components and assemblies; it specifies the required content of an inspection/acceptance document (cleanliness requirement and inspection method) and offers guidelines for contaminant extraction, analysis and expression of results. It does not prescribe the numerical cleanliness requirement itself (see ISO 12669 for methods to determine required cleanliness levels) and does not cover appearance defects or contamination by liquids or gases. The standard also clarifies that approved functional liquids can be treated as components for inspection purposes. Safety practices and regulatory compliance related to handling extraction fluids or hazardous materials are not addressed and remain the user's responsibility.

Key topics and requirements

• Structure and minimum content of an inspection/acceptance document for component cleanliness (requirement statement and agreed inspection method).
• Guidance on particle extraction methods from components (pressure rinsing, solvent extraction, ultrasonic, bench-test extraction) and sample handling to minimise extraneous contamination.
• Recommended laboratory analysis techniques and data reporting formats (particle counting, sizing, microscopy and cumulative reporting conventions).
• Requirements for expressing results in standard contamination codes and numerical formats (linkage to ISO 4406 coding and calibrated particle-counting practice).
• Notes on applicability, exclusions (appearance, liquid/gaseous contamination) and the responsibility of parties to agree required cleanliness levels.

Typical use and users

Used by hydraulic component manufacturers, OEMs, procurement and quality engineers, acceptance/test laboratories and end‑users who need to specify, verify or accept the particulate cleanliness of valves, pumps, cylinders, hoses, filters, and other wetted components. It is helpful for suppliers preparing inspection certificates, test houses performing extraction and particle analysis, and quality teams managing incoming inspection or final assembly cleanliness verification.

Related standards

ISO 18413:2015 is complementary to other hydraulic cleanliness and particle‑analysis standards, notably ISO 12669 (method for determining the required cleanliness level of a hydraulic system), ISO/TR 10686 (method to relate the cleanliness of the system to the cleanliness of its components and filling fluid), ISO 4406 (coding method for contamination levels by solid particles) and ISO 11171 (calibration of automatic particle counters / particle‑count data reporting). These documents are commonly used together when specifying component requirements, choosing inspection methods and reporting particle counts.

Keywords

hydraulic fluid power, cleanliness, component cleanliness, inspection document, contaminant extraction, particle analysis, data reporting, ISO 18413, ISO 12669, ISO TR 10686, ISO 4406, ISO 11171.

FAQ

Q: What is this standard?

A: ISO 18413:2015 specifies the content of an inspection/acceptance document for hydraulic fluid power components and gives guidance on extraction, analysis and reporting of particulate contamination found on wetted surfaces and internal volumes.

Q: What does it cover?

A: It covers particulate contamination on wetted surfaces and volumes of hydraulic components, the structure and content of the inspection document (cleanliness requirement + inspection method), and guidance on contaminant extraction and laboratory analysis and data reporting. It does not set specific numerical cleanliness requirements, nor does it address appearance defects or liquid/gaseous contamination.

Q: Who typically uses it?

A: Component manufacturers, OEMs, procurement and quality engineers, test laboratories and maintenance/assembly teams who specify or verify component cleanliness before final assembly or delivery.

Q: Is it current or superseded?

A: ISO 18413:2015 is the 2nd edition published in 2015 and replaced ISO 18413:2002. The ISO catalogue lists the 2015 edition as published (subject to periodic review). Users should confirm the current status at the time of purchase or application because standards are reviewed and occasionally updated.

Q: Is it part of a series?

A: It forms part of the hydraulic fluid power cleanliness family of standards (managed by ISO/TC 131/SC 6) and is intended to be used with other documents such as ISO 12669, ISO/TR 10686, ISO 4406 and ISO 11171 for determining required cleanliness levels, relating component/system cleanliness and ensuring calibrated particle-count reporting.

Q: What are the key keywords?

A: Cleanliness, component cleanliness, inspection document, contaminant extraction, particle analysis, data reporting, hydraulic fluid power, ISO 18413.