Ratings of Fiber Properties

View a legend of how to interpret fiber property ratings for upper half mean length, fiber elongation, uniformity, fiber fineness, fiber maturity ratio and fiber strength for the fiber chart data.

 

Upper Half Mean Length
Below 0.99 Short
0.99-1.10 Medium
1.11-1.26 Long
Above 1.26 Extra Long

 

Fiber Elongation (%)
Below 5.0 Very Low
5.0-5.8 Low
5.9-6.7 Average
6.8-7.6 High
Above 7.6 Very High

 

Uniformity Index
Below 77 Very Low
77-79 Low
80-82 Average
83-85 High
Above 85 Very High

Length Uniformity Index (LUI) = 100 x Mean Length
Upper Half Mean Length

 

Fiber Fineness (millitex)
Below 135 Very Fine
135-175 Fine
175-200 Average
200-230 Coarse
Above 230 Very Coarse

 

Fiber Maturity Ratio
Below 0.7 Uncommon
0.7-0.8 Immature
0.8-1.0 Mature
Above 1.0 Very Mature

 

Fiber Strength
(1/8-in. gauge strength in grams/tex)
23 and below Weak
24-25 Intermediate
26-28 Average
29-30 Strong
31 and above Very Strong
 

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