SAE J2558-2014
Classification System for Thermoplastic Elastomers
- Standard No.
- SAE J2558-2014
- Release Date
- 2014
- Published By
- SAE - SAE International
- Status
- Replace By
- SAE J2558-2023
- Latest
- SAE J2558-2023
- Scope
- 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.
SAE J2558-2014 history
- 2023 SAE J2558-2023 Classification System for Thermoplastic Elastomers
- 2014 SAE J2558-2014 Classification System for Thermoplastic Elastomers
- 2005 SAE J2558-2005 Classification Systems for Thermoplastic Elastomers
- 2002 SAE J2558-2002 Classification System for Thermoplastic Elastomers
