This SAE Standard provides a system for specifying significant material properties of thermoplastic elastomers (TPEs) that are intended for, but not limited to, use in automotive applications.

NOTE 1 - For the purposes of this document a TPE is defined as a polymeric material that, without further chemical modifications, is capable of recovering from deformations quickly and forcibly and is also capable of being repeatedly softened by heating and hardened by cooling within a temperature range characteristic of the material.

NOTE 2 - When the TPE product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system, it is necessary for the purchaser to consult the supplier in advance to establish the appropriate properties, test methods, and specification test limits.

In all cases where provisions of this classification system would conflict with those of the detailed specifications for a particular product, the latter shall take precedence.

This classification is based on SI units.

Purpose

The purpose of this classification system is to provide a method by which TPEs may be specified by the use of a simple line call-out designation. To allow line call-outs, the system includes a symbol for the type of TPE to be used and letters and numbers for each level of property or characteristic.

EXAMPLE - A thermoplastic vulcanizate might be specified as follows:

SAE J2558 TPV (A35445, BS2440, DA55, EL290, G15, SGA970, TS4)

Rationale

Allow use of industry standard engine oil in characterization of various TPE materials covered by SAE J2558.

Customers who purchased SAE J2558
also purchased

• SAE J200 : Classification System for Rubber Materials
• ASTM D4000 : Standard Classification System for Specifying Plastic Materials
• ASTM D6779 : Standard Classification System for and Basis of Specification for Polyamide Molding and Extrusion Materials (PA)
• GMW GMW3059 : Restricted and Reportable Substances for Parts-English; Revision K; Replaces HN 1000, EDS-A-0101 and STD 3977

See More Documents