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ASTM D2260-03(2013)

Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

standard by ASTM International , 07/01/2013

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1.1 These tables include (1) a series of conversion factors required to convert the number of a yarn measured in a specific system to the equivalent number measured in various other systems (see Table 1), and (2) specific equivalent numbers for yarns measured in various systems (see Table 2).

TABLE 1 Conversion Factors for Converting from One Yarn Numbering System to AnotherA

System for Which Yarn Number is
Needed

System for Which Yarn Number is Known

TexB

Denier

American
Grain Count

Cotton
Count

Worsted
Count

Woolen Run

Metric
Count

Linen Lea
Woolen Cut

Yd/lb

TexB (g/1000 m)

tex = 

...

Equation D2260-03R13_1

0.590 541
× gr

Equation D2260-03R13_2

Equation D2260-03R13_3

Equation D2260-03R13_4

Equation D2260-03R13_5

Equation D2260-03R13_6

Equation D2260-03R13_7

Denier (g/9000 m)

den = 

9 × tex

...

5.314 87
× gr

Equation D2260-03R13_8

Equation D2260-03R13_9

Equation D2260-03R13_10

Equation D2260-03R13_11

Equation D2260-03R13_12

Equation D2260-03R13_13

American Grain Count (grains/120 yd)

gr = 

Equation D2260-03R13_14

Equation D2260-03R13_15

...

Equation D2260-03R13_16

Equation D2260-03R13_17

Equation D2260-03R13_18

Equation D2260-03R13_19

Equation D2260-03R13_20

Equation D2260-03R13_21

Cotton count (840 yd lengths/lb)

cc = 

Equation D2260-03R13_22

Equation D2260-03R13_23

Equation D2260-03R13_24

...

Equation D2260-03R13_25

Equation D2260-03R13_26

0.590 541
× mc

Equation D2260-03R13_27

Equation D2260-03R13_28

Worsted count (560 yd lengths/lb)

wc = 

Equation D2260-03R13_29

Equation D2260-03R13_30

Equation D2260-03R13_31

1.5 × cc

...

Equation D2260-03R13_32

0.885 812
×mc

Equation D2260-03R13_33

Equation D2260-03R13_34

Woolen run (1600 yd lengths/lb)

wr = 

Equation D2260-03R13_35

Equation D2260-03R13_36

Equation D2260-03R13_37

0.525 × cc

0.35 × wc

...

0.310 034
× mc

0.187 5
×lea

Equation D2260-03R13_38

Metric count (1000 m/kg)

mc = 

Equation D2260-03R13_39

Equation D2260-03R13_40

Equation D2260-03R13_41

Equation D2260-03R13_42

Equation D2260-03R13_43

Equation D2260-03R13_44

...

Equation D2260-03R13_45

Equation D2260-03R13_46

Linen lea (300 yd lengths/lb)

lea = 

Equation D2260-03R13_47

Equation D2260-03R13_48

Equation D2260-03R13_49

2.8 × cc

1.866 67
× wc

0.187 5
× wr

1.653 52
× mc

...

Equation D2260-03R13_50

Yards per pound (yd/lb)

y = 

Equation D2260-03R13_51

Equation D2260-03R13_52

Equation D2260-03R13_53

840 × cc

560 × wc

1600 × wr

496.055
× mc

300 × lea

...

A The conversion factors are based on the following relationships given in Metric Practice SI 10SI10: 1 yard = 0.9144 m, exactly, and 1 lb (avoirdupois) = 0.453 592 37 kg, exactly. The conversion factors in Table 1 containing fewer than six significant digits are exact values.
B Multiples and submultiples of this basic unit may be used as a convenience to avoid large numbers or decimal fractions. For example, decitex (dtex) or tex × 10 is suitable for fine yarns and fibers; millitex (mtex) or tex × 1000 is suitable for fibers; while kilotex (ktex) or tex/1000 is often used for ropes, cords, rovings, tops, and slivers.

Examples of Table 1 use:

1) The English worsted count equivalent to a cotton count of 10 is 1.5 times 10, or 15 English worsted count.

2) The cotton count equivalent to 30 tex is 590.54 divided by 30, or 19.7 cotton count.

1.2 The content is basically consistent with recommendations of the International Organization for Standardization (ISO) Standard 2947.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 

Product Details

Published:
07/01/2013
Number of Pages:
12
File Size:
1 file , 100 KB
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Document History

  1. ASTM D2260-03(2018)


    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Most Recent

  2. ASTM D2260-03(2013)

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    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Historical Version

  3. ASTM D2260-03(2009)


    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Historical Version

  4. ASTM D2260-03


    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Historical Version

  5. ASTM D2260-02


    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Historical Version

  6. ASTM D2260-01


    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Historical Version

  7. ASTM D2260-96


    Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems

    • Historical Version