ASTM D2229-10(2014)
Standard Test Method for Adhesion Between Steel Tire Cords and Rubber

Standard No.

ASTM D2229-10(2014)

Release Date

2010

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D2229-10(2014)

Scope

5.1 This test method is considered satisfactory for the acceptance testing of commercial shipments of steel tire cord because current estimates of between-laboratory precision for single materials are considered acceptable and the method has been used extensively in the trade for acceptance testing.

5.1.1 If there are differences or practical significances between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, the test samples should be used that are as homogenous as possible, that are drawn from the material from which the disparate test results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing. Other materials with established test values may be used for this purpose. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.

5.2 The mold described in this test method is primarily designed for quality acceptance testing for steel cord where the sample size for each cord is 4 or a multiple thereof, but any mold/cavity combination which will provide the required test block dimensions (Figs. 1 and 2) is acceptable.

FIG. 1 Definition of Test Block Dimensions

TOLERANCES
8199;8199;All dimensions8199;±0.2
8199;8199;Angular8199;±2°
8199;8199;Except where noted

Note 1—All dimensions in millimetres except where noted.

Note 2—Material—Mild steel.

Note 3—Mold should be coated permanently with a polytetrafluoro-ethylene, such as Teflon®, or preferably, with a stainless steel reinforced polytetrafluoro-ethylene with a polyamid binder, such as Excalibur®.⁴

Note 4—Dimensions with “*” may be altered to accommodate test grips.

FIG. 2 Four-Cavity Steel Cord Adhesion Mold

5.3 Appendix X1 contains suggested ranges of environmental conditions for aging tests.

5.4 The property measured by this test method indicates whether the adhesion of the steel cord to the rubber is greater than the cohesion of the rubber, that is, complete rubber coverage of the steel cord, or less than the cohesion of the rubber, that is, lack of rubber coverage.

1.1 This test method covers the determination of the force required ......

ASTM D2229-10(2014) Referenced Document

• ASTM D123 Standard Terminology Relating to Textiles
• ASTM D1566 Standard Terminology Relating to Rubber
• ASTM D2904 Standard Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data
• ASTM D6477 Standard Terminology Relating to Tire Cord and Fabrics
• ASTM D76 Standard Specification for Tensile Testing Machines for Textiles
• ASTM E105 Standard Practice for Probability Sampling Of Materials
• ASTM E122 Standard Practice for Calculating Sample Size to Estimate, With a Specified Tolerable Error, the Average for Characteristic of a Lot or Process

ASTM D2229-10(2014) history

• 2010 ASTM D2229-10(2014) Standard Test Method for Adhesion Between Steel Tire Cords and Rubber
• 2010 ASTM D2229-10 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber
• 2004 ASTM D2229-04e1 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber
• 2004 ASTM D2229-04 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber
• 2002 ASTM D2229-02 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber
• 1999 ASTM D2229-99 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber