ISO 4406:2017 specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system. ISO 4406:1999 Code Chart Range Particles per milliliter Code More than Up to/including 24 0 8000 4000 200 100 50 2500 17 640 1300 16 320 640 15 160 320 14 80 160 13 40 80 12 20 40 11 10 20 10 5 10 9 2.5 5 8 1.3 2.5 7 0.64 1.3 6 0.32 0.64 UNDERSTANDING ISO CODES.

• Iso 4406 Standard Pdf
• Iso 4406 Pdf Download
• Iso 4406 Pdf

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ISO 4406:2017 specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system.

General information

• Publication date : 2017-08
  Corrected version (en) : 2018-03
• Number of pages : 6
• :

• ICS :

• CHF38

Life cycle

A standard is reviewed every 5 years

• 40
• 50
• 60
  Publication
• 90.92
• 95

Revisions / Corrigenda

• Previously
  ISO 4406:1999
  
• Now under review
  ISO 4406:2017
• Revised by
  ISO 4406
  

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There are a number of different cleanliness code standards, we will detail a few of the common ones here.

Iso 4406 Standard Pdf

ISO 4406 is a three part code (e.g. 18/17/13), where the first number encodes the number of particles greater than 4µm in size, the second number refers to particles greater than 6µm, and the third number quantifies particles greater than 14µm (>4/>6/>14)*. The ISO Code numbers themselves are quantified in the below table. It is important to note that a cumulative count is used (i.e. particles >4µm rather than between 4 and 6 µm).

Thus an ISO Code of 15/14/12 means that there are between 160 and 320 particles per ml greater than 4µm, between 80 and 160 particles per ml greater than 6µm and between 20 and 40 particles per ml greater than 14µm.

*An older version of the standard referred to particles >2µm/>5µm/>15µm. The change was due to a different calibration dust standard being used and was also designed to separate the 4-6µm range, as relevant to hydraulic systems with clearances around 5µm.

Iso 4406 Pdf Download

In NAS 1638 classification the code number refers to a maximum quantity of particles within a specific size class. Most users use a single code number based on the highest particle count in any of the size ranges. This standard is now considered obsolete, however it is still widely used.

SAE AS4059 Rev E Table is technically identical to ISO 11218. The below table refers to cumulative counts, with the different particle size ranges quoted for calibrations to different standard**. Dialog mega run game download for android. Results are presented in the format of A6/B6/C5/D5/E4/F3.

Iso 4406 Pdf

**Instances of particle sizes given as “µm” refer to ACFTD (i.e. Air Cleaner Fine Test Dust) distributions. Download archicad 15 mac crack. Instances of particle sizes given as “µm(c)” refer to MTD (i.e. ISO Medium Test Dust) distributions.