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Microhidráulica Industrial

NAS 1638 Table

NAS* 1638 Number of Particles per 100 mL Micron Range ISO 4406
Class 5-15 µ 15-25 µ 25-50 µ 50-100 µ >100 µ Class
00 125 22 4 1 8/5
0 250 44 8 2 9/6
1 500 89 16 3 1 10/7
2 1K 178 32 6 1 11/8
3 2K 356 63 11 2 12/9
4 4K 712 126 22 4 13/10
5 8K 1425 253 45 8 14/11
6 16K 2.8K 506 90 16 15/12
7 32K 5.7K 1012 180 32 16/13
8 64K 11.4K 2.0K 360 64 17/14
9 128K 22.8K 4.1K 720 128 18/15
10 256K 45.6K 8.1K 1440 256 19/16
11 512K 91.2K 16.2K 2.8K 512 20/17
12 1M 182K 32.4K 5.8K 1024 21/18

• SAE standard AS 4059 also applies. This lists fluid particulate contamination cumulatively for 5 ranges for contamination classes from 000 to 12.

•  >2 µ    •  >5 µ    •  >15 µ    •  >25 µ    •  >50 µ

NAS* 1638 Number of Particles per 100 mL Micron Range ISO 4406
Class 5-15 µ 15-25 µ 25-50 µ 50-100 µ >100 µ Class
00 125 22 4 1 8/5
0 250 44 8 2 9/6
1 500 89 16 3 1 10/7
2 1K 178 32 6 1 11/8
3 2K 356 63 11 2 12/9
4 4K 712 126 22 4 13/10
5 8K 1425 253 45 8 14/11
6 16K 2.8K 506 90 16 15/12
7 32K 5.7K 1012 180 32 16/13
8 64K 11.4K 2.0K 360 64 17/14
9 128K 22.8K 4.1K 720 128 18/15
10 256K 45.6K 8.1K 1440 256 19/16
11 512K 91.2K 16.2K 2.8K 512 20/17
12 1M 182K 32.4K 5.8K 1024 21/18

• SAE standard AS 4059 also applies. This lists fluid particulate contamination cumulatively for 5 ranges for contamination classes from 000 to 12.

•  >2 µ    •  >5 µ    •  >15 µ    •  >25 µ    •  >50 µ