ASTM D885/D885M : 25

Standard Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers

Standard Details

1.1 This standard covers the testing of industrial yarns wholly made of manufactured organic-based fibers; twisted cords made of these yarns; fabrics woven from these twisted cords; and other structures made specifically for use in manufacture of pneumatic tires.

1.1.1 These test methods can also be applicable when these yarn structures are used for reinforcing other rubber goods and fabrics made with these cords.

1.1.2 The test methods are relevant for evaluating various yarns: nylon, polyester, and rayon yarns; tire cords twisted from these yarns, and fabrics made from these yarns.

1.2 The sections on “Growth of Conditioned Yarns and Cords,” “Properties of Yarns and Cords at Elevated Temperature,” and “Properties of Wet Yarns and Cords” have been moved to Appendix X1 – Appendix X3 as non-mandatory informational items because of their very limited use by the industry and because precision and bias statements are not included.

1.3 This standard includes the following sections:

	Section
Adhesion of Cord to Elastomers	34
Bibliography of Tire Cord Test Methods	Appendix X5
Breaking Strength (Force) of Yarns and Cords at Elevated Temperature	X2.3
Breaking Force of Conditioned Yarns and Cords	16
Breaking Force of Oven-Dried Rayon Yarns and Cords	23
Breaking Strength of Rayon Yarns and Cords at Specified Moisture Regain Level, Adjustment of	17
Breaking Tenacity of Conditioned Yarns and Cords	18
Breaking Tenacity of Oven-Dried Rayon Yarns and Cords	24
Breaking Toughness of Yarns and Cords	28
Commercial Mass	9
Conditioning	7
Contraction of Wet Yarns and Cords	Appendix X3
Count of Tire Cord Fabric	37
Dip (Adhesive) Solids Pickup on Yarns and Cords	33
Elongation at Break of Conditioned Yarns and Cords	19
Elongation at Break of Oven-Dried Rayon Yarns and Cords	25
Elongation of Rayon Yarns and Cords at a Specified Moisture Regain Level, Adjustment of Observed	20
Extractable Matter in Yarns and Cords	32
Force at Specified Elongation (FASE) of Conditioned Yarns and Cords	21
Force-at-Specified-Elongation (FASE) of Oven-Dried Rayon Yarns and Cords	26
Growth of Conditioned Yarns and Cords	Appendix X1
Identification of Fibers	8
Keywords	40
Linear Density	11
Mass of per Unit Area of Tire Cord Fabric	36
Modulus of Conditioned Yarns and Cords	22
Moisture Regain, Actual	10
Precision and Bias of Certain Yarn and Cord Tests	39
Properties of Tire Cord Fabric	35 to 38
Sampling	6
Shrinkage Force of Conditioned Yarns and Cords at Elevated Temperature	X2.5
Shrinkage of Conditioned Yarns and Cords at Elevated Temperature	X2.4
Significance and Use, General	5
Significance and Use, Tensile Properties	14
SI Calculations (examples for work-to-break, specific work-to-break, and breaking toughness)	Appendix X4
Stiffness of Fabric	38
Tensile Properties of Yarns and Cords	12 to 28
Terminology	3
Thickness of Cords	31
Twist in Yarns and Cords	30
Width of Tire Cord Fabric	35
Work-to-Break of Yarns and Cords	27

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 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.