1、SURFACE VEHICLE STANDARD J2558 OCT2014 Issued 2002-04 Reaffirmed 2014-10 Superseding J2558 OCT2005 Classification System for Thermoplastic ElastomersRATIONALE J2558 has been reaffirmed to comply with the SAE five-year review policy. _ SAE Technical Standards Board Rules provide that: “This report is
2、 published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each tec
3、hnical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or trans
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5、 WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J2558_201410 1. Scope This SAE Standard provides a system for specifying significant material properties of thermoplastic elastomers (TPEs) that are
6、 intended for, but not limited to, use in automotive applications. NOTE 1For 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 so
7、ftened by heating and hardened by cooling within a temperature range characteristic of the material. NOTE 2When 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 t
8、he 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 classific
9、ation is based on SI units. 1.1 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 e
10、ach level of property or characteristic. EXAMPLEA thermoplastic vulcanizate might be specified as follows: SAE J2558 TPV (A35445, BS2440, DA55, EL290, G15, SGA970, TS4) 2. References 2.1 Applicable Publications The following publications form a part of this specification to the extent specified here
11、in. Unless otherwise indicated, the latest version of SAE publications shall apply. 2.1.1 SAE PUBLICATIONS Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 SAE J369Flammability of Automotive Interior MaterialsHorizontal Test Method SAE J1545Instrumental Color Difference Measurem
12、ent for Exterior Finishes, Textiles and Colored Trim SAE J1756Determination of Fogging Characteristics of Interior Automotive Materials SAE J1885Accelerated Exposure of Automotive Interior Trim Components Using a Controlled Irradiance Water Cooled Xenon-Arc Apparatus SAE J1960Accelerated Exposure of
13、 Automotive Exterior Materials Using a Controlled Irradiance Water Cooled Xenon-Arc Apparatus 2.1.2 FMVSS PUBLICATION Available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. FMVSS 302Flammability of Interior MaterialsPassenger Car, Multi-Purpose Passeng
14、er Vehicles 2.1.3 ISO PUBLICATIONS Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002. ISO 34Rubber, vulcanizedDetermination of tear strength (trouser, angle and crescent test pieces) ISO 37Rubber, vulcanized or thermoplasticDetermination of tensile stress-strain properties ISO 188Rub
15、ber, vulcanizedAccelerated aging or heat resistance tests ISO 812Rubber, vulcanizedDetermination of low-temperature brittleness ISO 815Rubber, vulcanized or thermoplasticDetermination of compression set at ambient, elevated or low temperature ISO 868Plastics and eboniteDetermination of indentation h
16、ardness by means of a durometer (Shore hardness) ISO 1183PlasticsMethods for determining the density and relative density of non-cellular plastics ISO 1431-1Rubber, vulcanized or thermoplasticResistance to ozone crackingPart 1: Static strain test ISO 1817Rubber, vulcanizedDetermination of the effect
17、 of liquids ISO 3384Rubber, vulcanizedDetermination of stress relaxation in compression at ambient and at elevated temperatures ISO 3795Road vehicles, and tractors and machinery for agriculture and forestryDetermination of burning behaviour of interior materials ISO 3865Rubber, vulcanized or thermop
18、lasticMethods of test for staining in contact with organic material third edition ISO 8013Rubber, vulcanizedDetermination of creep in compression or shear SAE INTERNATIONAL J2558 Reaffirmed OCT2014 Page 2 of 13_ 2.1.4 AATCC PUBLICATION Available from American Association of Textile Chemists and Colo
19、rists 1 Davis Drive, P.O. Box 12215, Research Triangle Park, NC 27709-2215. AATCC Evaluation Procedure 1Gray Scale Color Change 2.2 Related Publication The following publication is provided for information purposes only and is not a required part of this document. 2.2.1 UL PUBLICATION Available from
20、 Underwriters Laboratories, 333 Pfingsten Road, Northbrook, IL 60062-2096. UL-94Test for Flammability of Plastic Materials for Parts, Devices, and Appliances 3. General Classification 3.1 TPEs shall be identified by a symbol following the SAE J2558 specification number based on family type as found
21、in Table 1. TABLE 1SYMBOLS FOR TPE FAMILIES Symbol TPE Family Name TECEA Thermoplastic Elastomer Chlorinated Ethylene Alloy TEEE Thermoplastic Elastomer, Ether-Ester TES Thermoplastic Elastomer Styrenic TPO Thermoplastic Polyolefin TPV Thermoplastic Vulcanizate TPU Thermoplastic Polyurethane SAE INT
22、ERNATIONAL J2558 Reaffirmed OCT2014 Page 3 of 13_ 4. Compound Properties 4.1 Suffix Letters The suffix letters, which indicate additional tests, together with their meaning, appear in Table 2. TABLE 2MEANING OF SUFFIX LETTERS Suffix Letter Test Required A Heat Resistance B Compression Set Resistance
23、 C Ozone Resistance D Hardness EA Fluid Resistance (Aqueous) EF Fluid Resistance (Fuels) EO Fluid Resistance (Oils and Lubricants) EL Elongation F Low Temperature Resistance G Tear Resistance H Fogging Characteristics J Abrasion Resistance M Flammability Resistance P Staining Resistance SR Stress Re
24、laxation SG Specific Gravity T Creep Resistance TM Tensile Stress at a Given Elongation TS Tensile Strength WE UV Resistance (Exterior) WI UV Resistance (Interior) Z Special Requirements SAE INTERNATIONAL J2558 Reaffirmed OCT2014 Page 4 of 13_ 4.2 Heat Resistance (Suffix Letter A) As determined by I
25、SO 188. The first digit following the suffix letter A, in Table 3, shall designate the test time. The second digit following the suffix letter A, in Table 3, shall designate the test temperature. TABLE 3HEAT RESISTANCE SUFFIX NUMBER DESIGNATIONS 1st Digit Time (h) 2nd Digit Temperature (C) 1 22 1 23
26、 2 70 2 70 3 168 3 100 4 1008 4 125 5 150 The third, fourth and fifth digits are obtained from Suffix Table 4 and indicate changes in hardness, tensile strength, and elongation following heat aging. TABLE 4PROPERTY CHANGE TABLE Property 0 1 2 3 4 5 6 3rd Digit Hardness change, Shore pts Unspecified
27、2 3 4 5 8 10 4th Digit Tensile, % change max Unspecified 5 10 20 30 40 50 5th Digit Elongation, % change max Unspecified 5 10 20 30 40 50 EXAMPLEA44535 = 1008 h at 125 C, 8 max hardness change, 20 max tensile change, 40 max elongation change. SAE INTERNATIONAL J2558 Reaffirmed OCT2014 Page 5 of 13_
28、4.3 Compression Set (Suffix Letter B) As determined by ISO 815 Type A. Specimen type shall be denoted by means of the letter S (solid) or P (plied) following the B symbol. The test time shall be designated by the first digit following the suffix letters (BS or BP symbol) in Table 5. The second digit
29、 following the suffix letters in Table 5 shall designate the test temperature. The percent compression set value shall be no more than the numerical value expressed by the third and fourth digits following the suffix letters (BS or BP symbol). TABLE 5COMPRESSION SET SUFFIX NUMBER DESIGNATIONS 1st Di
30、git Time (h) 2nd Digit Temperature (C) 1 22 1 23 2 70 2 70 3 168 3 100 4 1008 4 125 5 150 EXAMPLEBS2325 = 25% max compression set after 70 h at 100 C. 4.4 Ozone Resistance (Suffix letter C) As determined by ISO 1431-1. The ozone concentration shall be specified by the first digit following the C sym
31、bol in Table 6. The percent elongation shall be designated by the second digit following the C symbol in the table below. No cracking shall be allowed following testing according to Procedure A. TABLE 6OZONE RESISTANCE SUFFIX NUMBER DESIGNATIONS 1st Digit Partial Pressure O32nd Digit % Elongation 2n
32、d Digit % Elongation 1 25 MPa 5 MPa 1 5 1 6 40 2 2 51 MPa 5 MPa 2 10 1 7 50 2 3 101 MPa 10 MPa 3 15 2 8 60 2 4 201 MPa 20 MPa 4 20 2 9 80 2 5 30 2 4.5 Hardness (Suffix letter D) Shall be determined by ISO 868 using either the Type A or Type D scale as indicated by the amending letter. The hardness s
33、hall be shown by the numerical value following the amending letter with a tolerance of 5 points for Type A values and 3 for Type D values. EXAMPLEDA60 = 60 5 Type A DD40 = 40 3 Type D SAE INTERNATIONAL J2558 Reaffirmed OCT2014 Page 6 of 13_ 4.6 Fluid Resistance (Suffix letters EA - Aqueous, EF - Fue
34、ls, and EO - Oils and Lubricants) As determined by ISO 1817. The first digit following the suffix letters EA, EF or EO in Table 7 shall designate the test time. The second digit following the suffix letters EA, EF, or EO in Table 7 shall designate the test temperature. TABLE 7FLUID RESISTANCE SUFFIX
35、 NUMBER DESIGNATIONS 1st Digit Time (h) 2nd Digit Temperature (C) 1 22 1 23 2 70 2 70 3 168 3 100 4 1008 4 125 5 150 The third, fourth, fifth, and sixth digits are obtained from Suffix Tables 8, 9, and 10, depending on fluid type, and indicate changes in hardness, tensile strength, elongation, and v
36、olume swell following fluid aging. TABLE 8FLUID RESISTANCE PROPERTY CHANGE TABLE (AQUEOUS) Property 0 1 2 3 4 5 6 3rd Digit Hardness change, Shore pts Unspecified 2 3 4 5 8 10 4th Digit Tensile, % change max Unspecified 5 10 20 30 40 50 5th Digit Elongation, % change max Unspecified 5 10 20 30 40 50
37、 6th Digit Change in Volume, % max Unspecified +2 +4 +6 +8 +10 +15 The type of aqueous fluid is designated by the letter symbol following the sixth digit as indicated as follows. A. Distilled water B. Distilled Water / Ethylene glycol (reagent grade) 50/50 by volume. EXAMPLEEA332336B = Age 168 hours
38、 at 100 C in distilled water/ethylene glycol, max changes hardness 2 points, tensile 20%, elongation 20%, volume +15%. TABLE 9FLUID RESISTANCE PROPERTY CHANGE TABLE (FUELS) Property 0 1 2 3 4 5 6 3rd Digit Hardness change, Shore pts Unspecified 5 10 15 20 25 30 4th Digit Tensile, % change max Unspec
39、ified 5 10 20 30 40 50 5th Digit Elongation, % change max Unspecified 5 10 20 30 40 50 6th Digit Change in Volume, % max Unspecified +10 +20 +40 +60 +80 +100 SAE INTERNATIONAL J2558 Reaffirmed OCT2014 Page 7 of 13_ The type of fuel is designated by the letter symbol following the sixth digit as indi
40、cated as follows (from ISO 1817, Annex Table 1). A. Reference Liquid A E. Reference Liquid E B. Reference Liquid B F. Reference Liquid F C. Reference Liquid C EXAMPLEEF214565C = Age 70 hours at 23 C in Reference Liquid C, max changes hardness 20 points, tensile 40%, elongation 50%, volume +80%. TABL
41、E 10FLUID RESISTANCE PROPERTY CHANGE TABLE (OILS) Property 0 1 2 3 4 5 6 3rd Digit Hardness change, Shore pts Unspecified 5 10 15 25 35 45 4th Digit Tensile, % change max Unspecified 5 10 20 30 40 50 5th Digit Elongation, % change max Unspecified 5 10 20 30 40 50 6th Digit Change in Volume, % max Un
42、specified 15 +30 +60 +90 +120 +140 The type of oil is designated by the letter symbol following the sixth digit as indicated as follows. A. Oil No. 1 B. IRM 902 C. IRM 903 D. Service Fluid 105 EXAMPLEEO245665C = Age 70 hours at 125 C in IRM 903 oil, max changes hardness 35 points, tensile 50%, elong
43、ation 50%, volume +120%. 4.7 Elongation (Suffix Letters EL) As determined by ISO 37 the percent elongation shall be no less than the numerical value following the EL symbol. EXAMPLEEL430 = 430% minimum 4.8 Low Temperature Brittleness (Suffix F) As determined by ISO 812, Procedure A. The value requir
44、ed shall be a maximum temperature express by the numerical value multiplied by 1 following the F symbol designated in degrees Celsius. EXAMPLEF40 = 40 C max brittleness temperature. SAE INTERNATIONAL J2558 Reaffirmed OCT2014 Page 8 of 13_ 4.9 Tear Strength (Suffix Letter G) As determined by ISO 34-1
45、 the test methods shall be specified by the letter symbol following the G symbol as designated as follows. The value required shall be no less than the numerical value following the second letter after the G symbol in kN/m. Test Methods (second letter) A. Method A: trouser test piece B. Method B, pr
46、ocedure (a): angle test piece without nick C. Method B, procedure (b): angle test piece with nick D. Method C: crescent test piece EXAMPLEGB30 = 30 kN/m minimum, Method B, procedure (a). 4.10 Fogging Characteristics (Suffix letter H) As determined by SAE J1756. The second letter P designates the photometric procedure and the second letter G designates the gravimetric procedure. The first digit following the second letter shall designate the test time as indicated in Table 11. The
