Seiya

Designation: D 1909 – 04

Standard

Table of Commercial Moisture Regains for Textile Fibers1
This standard is issued under the fixed designation D 1909; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e)indicates an editorial change since the last revision or reapproval.

1. Scope
1.1 This table lists the commercial moisture regains commonly used for a number of textile fibers. Such moisture regain
values are intended primarily for determining the commercial
weight of a specific fiber when the fiber is bought or sold on
this basis. These regain values also are used in calculating the
linear densityof yarn in procedures employing such factors and
in the quantitative analysis of fiber blends.

3. Terminology
3.1 Definitions:
3.1.1 commercial moisture regain (CMR), n—a formally
adopted, arbitrary value, to be used with the oven-dried mass of
textile fibers, when calculating the commercial mass of a
shipment or delivery.
3.1.2 For definitions of other textile terms used, refer toTerminology D 123.

2. Referenced Documents
2.1 ASTM Standards: 2
D 123 Terminology Relating to Textiles
D 2118 Practice for Assigning a Standard Commercial
Moisture Content for Wool and Its Products
D 2720 Practice for Calculation of Commercial Weight and
Yield of Scoured Wool, Top, and Noil for Various Commercial Compositions

4. Significance and Use
4.1 The value listed for the commercialmoisture regain of a
specific fiber type is not an experimentally determined quantity
but a purely arbitrary value arrived at for commercial purposes
by interested parties. The actual moisture regain values of
textile materials, when in moisture equilibrium with the standard atmosphere for testing, bear no consistent relation to the
commercial moisture regain values listed herein. Equilibriummoisture regain values depend upon the previous history of the
material.

1
This table is under the jurisdiction of ASTM Committee D13 on Textiles and
is the direct responsibility of Subcommittee D13.51 on Chemical Conditioning and
Performance Test Methods.
Current edition approved March 1, 2004. Published March 2004. Originally
approved in 1961. Last previous edition approved in 2001 as D1909 – 96(2001).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer tot he standard’s Document summary page on
the ASTM website.

5. Table of Commercial Moisture Regain Values
5.1 Commercial moisture regain values for specified fibers
are listed in Table 1.
6.Keywords
6.1 moisture regain; textile fiber

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1

D 1909 – 04
TABLE 1 Commercial Moisture Regain Values
Fiber

Regain, %

Acetate (secondary)
Acrylic
Aramid, for
High Modulus Yarn
Standard Yarn

6.5
1.5
A

Fiber

Regain, %

ModacrylicG
Class I
Class II0.4
2.0

3.5
7.0

Azlon
Cotton
Raw cotton
Natural cotton yarn
Dyed cotton yarn
Mercerized cotton yarn
Flax (raw)
Flax (linen)
Fluorocarbon
Glass
Hemp
Jute
Metallic

10.0
B

7.0C
8.0C
8.5C
12.0D
8.75
0.0
0.0
12.0D
13.75D
0.0

Class III
Nylon (polyamide)
Olefin
Polyester
Ramie
Raw
Scoured
Rayon (regenerated cellulose)
Rubber
Saran
Silk
SpandexTriacetate (primary)
Vinal
Vinyon
Wool (all forms)

3.0
4.5
0.0
0.4
7.6
7.8
11.0
0.0
0.0
11.0
1.3
3.5
4.5
0.0
13.6E,F

A
Aramid polymers are manufactured for specific but diverse end uses and have nominal regains that vary in the range 1.5 to 7.0 %. The values listed in the table are
the commercial regains of fibers currently produced.
B
There is no commercial regain value for raw...