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Aerospace Fluid Power - Cleanliness Classification for Hydraulic Fluids
- Aerospace Standard
- AS4059E
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Aerospace Standard (AS) defines cleanliness classes for particulate contamination of hydraulic fluids and includes methods of reporting related data (Appendix A). The contamination classes selected are based on the widely accepted NAS 1638 cleanliness classes. Conversion from NAS 1638 cleanliness class specifications to AS4059 class specifications is defined. Comparison of the NAS 1638 classes to AS4059 classes is defined and the differences explained (Appendix B). This document provides versatility in identifying a maximum class in multiple size ranges, total number of particles larger than a specific size or designating a class for each size. NAS 1638 classes based on weight of particles are not applicable to either of these classes and are not included.
Recommended Content
| Technical Paper | Hydraulic Fluid Contamination Study |
| Aerospace Standard | Aerospace Fluid Power - Contamination Classification for Hydraulic Fluids |
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| TABLE 1 | Cleanliness Classes For Differential Particle Counts (particles/100 mL) | |
| TABLE 2 | Cleanliness Classes for Cumulative Particle Counts (particles/100 mL) |
Issuing Committee
A-6C1 Fluids and Contamination Control Committee
A6C1 is responsible for the development of standards, processes, and practices related to Aerospace Fluids and Systems' cleanliness in aerospace engines, hydraulic systems and missiles, and the integration of these components for Commercial and Military air vehicles. The panel provides a forum for government engineers, prime contractors, and suppliers to exchange technical information, regulatory updates, recent technology developments, issues related to system development and in service operation and lessons learned.
Reference
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