ASTM D4030/D4030M-23

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D4030/D4030M − 15 D4030/D4030M − 23
Standard Specification for
Glass Fiber Cord and Sewing Thread
This standard is issued under the fixed designation D4030/D4030M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers the requirements for continuous glass filament sewing thread; and continuous filament cord,
untreated and neoprene treated.
1.2 This specification is intended to assist ultimate users by designating the types of these products that are typical in the industry.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system mayare not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from
the two systems maywill result in nonconformance with the 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 healthsafety, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D204 Test Methods for Sewing Threads
D578D578/D578M Specification for Glass Fiber Strands
D1423D1423/D1423M Test Method for Twist in Yarns by Direct-Counting
D1776D1776/D1776M Practice for Conditioning and Testing Textiles
D4963D4963/D4963M Test Method for Ignition Loss of Glass Fiber Strands and Fabrics
D7018D7018/D7018M Terminology Relating to Glass Fiber and Its Products (Withdrawn 2021)
2.2 ANSI Standard:
ANSI/ASQC Z1.4 Sampling Procedures for Inspection by Attributes
This specification is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.18 on Glass Fiber and its Products.
Current edition approved Feb. 1, 2015June 1, 2023. Published April 2015August 2023. Originally approved in 1981. Last previous edition approved in 20092015 as
ε1
D4030 – 09D4030/D4030M – 15. . DOI: 10.1520/D4030_D4030M-15.10.1520/D4030_D4030M-23.
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 to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D4030/D4030M − 23
3. Terminology
3.1 For all terminology under the jurisdiction of Subcommittee D13.18 (cord, neoprene treated, sewing thread, twist balance,
untreated), refer to Terminology D7018D7018/D7018M.
3.2 For definitions of other textile terms used in this specification, refer to Terminology D123.
4. Designation of Construction
4.1 The yarn designations of fiber glass cords and sewing threads are specified as directed in Specification D578D578/D578M
except that for the cords either the letter “U” or the letter “N” is added to the last segment of the designation.
4.1.1 Cord designations may include a type number that describes the relative diameter of the cords and treatment. The first
character of this designation is a numeral from 1 to 10 that indicates the relative diameter of the cord to other cords, that is, 2 is
larger than 1, 3 is larger than 2, etc. The second character of this designation is the letter “U” or the letter “N”. The “U” indicates
that the cord is untreated, and the “N” indicates that the cord is neoprene treated. The type number for cord is included in Tables
1 and 2 to show its relationship to designation.
4.1.2 Sewing thread construction includes a type number that describes a manufacturer’s code and the size. The second character
is a numeral and indicates the relative diameter of the sewing threads, that is, 4 is larger than 2, 6 is larger than 4, etc. This type
number for sewing thread is included in Table 3 to show its relationship to designation.
REQUIREMENTS
5. Material
5.1 The fiber shall be electrical grade, free of any free alkali metal oxides, such as soda or potash, and foreign particles, dirt, and
other impurities.
6. Designation
6.1 The nominal designation of glass fibercords listed in Table 1 or Table 2 shall conform to the requirements of Table 1 or Table
2. The nominal designation of glass fiber sewing threads listed in Table 3 shall conform to the requirements of Table 3. The nominal
designations of other lass fibercords or sewing threads shall be agreed upon between the purchaser and the supplier. The
requirements of the individual elements of the designation are specified in Sections 7 – 9.
7. Filament Diameter
7.1 The nominal filament diameter of glass fiber cords shall be designated by the letter designation “G”. The nominal filament
diameter of r glass fiber sewing threads shall be designated by the letter designation “B” to “DE”, as applicable. The numerical
values associated with letter designations are specified in Specification D578D578/D578M. The average filament diameter for the
yarns in the cord or sewing thread shall conform to Specification D578D578/D578M for the specified filament diameter.
TABLE 1 Physical Properties of Typical Continuous Filament Glass Cords, Untreated
Designation Nominal Yarn Number Breaking Strength, min Nominal Yarn Diameter
A
Type
tex inch-pound units tex yd/lb N lbf mm in.
1U EC9 33 2 × 2U ECG 150 2/2U 137 3620 44 10 0.25 0.010
2U EC9 33 4 × 5U ECG 150 4/5U 710 700 249 56 0.66 0.026
3U EC9 33 4 × 8U ECG 150 4/8U 1165 425 418 94 0.86 0.034
4U EC9 33 4 × 16U ECG 150 4/16U 2400 210 827 186 1.32 0.02
5U EC9 33 4 × 10 × 3U ECG 150 4/10/3U 4700 105 1277 287 1.93 0.06
6U EC9 33 4 × 12 × 3U ECG 150 4/12/3U 5500 90 1401 315 2.11 0.083
7U EC9 33 4 × 12 × 4U ECG 150 4/12/4U 7400 67 1601 360 2.41 0.095
8U EC9 33 4 × 24 × 3U ECG 150 4/24/3U 11000 45 2571 578 3.02 0.119
10U EC9 33 4 × 36 × 3U ECG 150 4/36/3U 17100 29 3363 756 3.78 0.149
A
Commercial designation.
D4030/D4030M − 23
TABLE 2 Physical Properties of Typical Continuous Filament Glass Cords, Treated
Designation Nominal Yarn Number Breaking Strength, min Nominal Yarn Diameter
A
Type
tex inch-pound units tex yd/lb N lbf mm in.
1N EC9 33 2 × 2N ECG 150 2/2N 153 3240 53 12 0.27 0.0105
2N EC9 33 4 × 5N ECG 150 4/5N 775 638 285 64 0.81 0.032
3N EC9 33 4 × 8N ECG 150 4/8N 1280 387 449 101 0.99 0.039
4N EC9 33 4 × 16N ECG 150 4/16N 2600 193 867 195 1.57 0.062
5N EC9 33 4 × 10 × 3N ECG 150 4/10/3N 5100 98 1290 290 2.13 0.084
6N EC9 33 4 × 12 × 3N ECG 150 4/12/3N 5900 84 1379 310 2.39 0.094
7N EC9 33 4 × 12 × 4N ECG 150 4/12/4N 8100 61 1512 340 2.79 0.110
8N EC9 33 4 × 24 × 3N ECG 150 4/24/3N 11800 42 2473 556 3.25 0.128
10N EC9 33 4 × 36 × 3N ECG 150 4/36/3N 18400 27 2998 674 4.19 0.165
A
Commercial designation.
TABLE 3 Physical Properties of Typical Continuous Filament Glass Sewing Threads
Designation Nominal Yarn Number Breaking Strength, min Nominal Yarn Diameter
A
Type
tex inch-pound units tex yd/lb N lbf mm in.
B-4 EC3.5 33 1 × 2 ECB 150 1/4 140 3550 58 13 0.36 0.014
B-6 EC3.5 33 2 × 3 ECB 150 2/3 213 2330 89 20 0.43 0.017
B-8 EC3.5 33 2 × 4 ECB 150 2/4 287 1730 111 25 0.51 0.020
T-12 EC6 33 1 × 4 ECDE 150 1/4 140 3550 58 13 0.36 0.014
T-18 EC6 33 2 × 4 ECDE 150 2/3 213 2330 89 20 0.43 0.017
T-24 EC6 33 2 × 4 ECDE 150 2/4 287 1730 111 25 0.51 0.020
B
E-12 EC 4.0 33 2 × 2 ECBC 150 2/2 140 3550 54 12 .36 .014
B
E-18 EC 4.0 33 2 × 3 ECBC 150 2/3 213 2330 80 18 .43 .017
B
E-24 EC 4.0 33 2 × 4 ECBC 150 2/4 287 1730 111 25 .051 .020
A
Commercial designation.
B
Finished PTFE (Teflon) coated sewing thread
NOTE 1—Because of the application of glass fiber sewing threads, it is desirable to utilize somewhat finer filament sizes.
8. Yarn Number
8.1 Since the yarn number in the designation does not include size, the nominal yarn number for strands including size is stated
separately for strands listed in Table 1, Table 2, or Table 3. For strands not listed in those tables, the nominal yarn number including
size shall be agreed upon between the purchaser and the supplier. The average yarn number for the lot shall be within the interval:
nominal yarn number 610 % of the nominal yarn number.
9. Strand Construction
9.1 For strands listed in Table 1, Table 2, or Table 3, the strand construction shall conform to the requirements of Table 1, Table
2, or Table 3. For strands not listed in Table 1, Table 2, or Table 3, the strand construction shall be agreed upon between the
purchaser and the supplier.
10. Direction of Twist
10.1 For glass fiber cords the primary twist shall be“ Z” twist and the final twist shall be “S” twist unless otherwise agreed upon
between the purchaser and the supplier. For glass fiber sewing threads the primary twist shall be “S” twist and the final twist shall
be “Z” twist unless otherwise agreed upon between the purchaser and the supplier.
11. Twist Level
11.1 The nominal twist of glass fiber cords and sewing threads shall be agreed upon between the purchaser and the supplier. The
tolerances for the primary twist and for the final twist shall conform to Table 4.
12. Breaking Strength
12.1 The minimum breaking strength for glass fibercords listed in Table 1 or Table 2 shall conform to the requirements of Table
1 or Table 2. The minimum breaking strength of glass fiber sewing thread listed in Table 3 shall conform to the requirements of
Table 3. The minimum breaking strength of other r glass fiber cords or sewing threads shall be agreed upon between the purchaser
and the supplier. No individual break shall be less than the specified minimum breaking strength.
D4030/D4030M − 23
TABLE 4 Twist Tolerances
Tolerances
Turns per Centimetre:
From zero to 0.4, incl ±0.1 turn per centimetre
From zero up to and including 0.4 ±0.1 turn per centimetre
Over 0.4 and up to and including 4.0 ±0.2 turn per centimetre
Over 4 ±5.0 % of the specified average
twist
Turns per Metre:
From zero to 40, incl ±10 turns per metre
From zero up to and including 40 ±10 turns per metre
Over 40 and up to and including 400 ±20 turns per metre
Over 400 ±5.0 % of the specified average
twist
Turns per Inch:
From zero to 1, incl ±0.25 turn per inch
From zer
...