1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2017 09 01 Revised See Summary of Revisions M. Nestorowich, NA 2017 07 24 Revised See Summary of Revisions M. Nestorowich, NA 2016 05 24 Released B. Haggart, NA Controlled document at www.MATS Copyright 2017, Ford Global Technologies,
2、LLC Page 1 of 5 ELASTOMERIC PARTS, INTERIOR PERFORMANCE WSS-M9P8-C 1. SCOPE The performance characteristics defined by this specification may be used to evaluate the environmental resistance of elastomeric parts in the passenger compartment. 2. APPLICATION This specification was released originally
3、to be used in conjunction with industry standards or material specifications to provide a coherent structure for all environmental testing of elastomeric parts. An elastomeric part is defined as a material with a Durometer A hardness of 90 and below (Such as Soft TPEs TPE-V, SEBS, TEEE, TPU, etc) wh
4、ich fall in the 2D category. Testing must be conducted on parts when possible. 2.1 LIMITATIONS Not applicable for dynamic sealing (WSS-M9P9-C/latest), weather strips (WSS-M9P10-B/latest), throw in mat assemblies (WSS-M9P11-A/latest), cargo/trunk mats (WSS-M9P11-A2/latest). 3. REQUIREMENTS 3.1 APPROV
5、ED SOURCES This specification is performance based and does not have approved sources. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of
6、the material should occur in the conditioning environment or soon after removal. 3.3 DV/PV TEST PLAN PEC/FEC/PV testing must be conducted in compliance with program milestones unless otherwise specified by Ford Engineering. See Table 1 for DV/PV testing. 3.4 APPEARANCE Color, gloss, grain, tactile e
7、ffect shall match master Trim Sample and/or Master Appearance Sample as approved by Color and Materials. 3.5 ENVIRONMENTAL TESTING 3.5.1 Short Term Environmental Cycling (FLTM BO 040-01 Procedure A, XX C) Rating 4 min 3.5.2 Long Term Environmental (FLTM BO 040-01 Procedure B, XX C) Rating 4 min ENGI
8、NEERING MATERIAL SPECIFICATION WSS-M9P8-C Copyright 2017, Ford Global Technologies, LLC Page 2 of 5 The temperature to be used for testing of Short and Long Term Environmental is identified by vehicle location as shown in the table below Vehicle Location Test Temperature Horizontal or vertical parts
9、 at or above the belt line 100+/- 2 C Horizontal or vertical parts Below the belt line 90 +/- 2 C Non Sun Loaded 80 +/- 2 C 3.5.3 Humidity Exposure (14 d at 38 +/- 1 C, 95 - 100% R.H.) Requirements: The assemblies shall remain relatively unaffected by the exposure cycles during and after the tests a
10、s demonstrated: (1) Tactually/visually - no excessive tackiness, or surface-color change (AATCC Procedure 1, Rating 4, min); no cracking, chalking, wrinkling, distortion, blistering, warping, delamination, blushing, iridescence, hazing, milkiness, staining, waviness, bloom or other objectionable vis
11、ual appearance. (2) Functionally - no excessive expansion, shrinking, or warping that will interfere with normal functional operations. (3) Any successful attempt to separate the components of coated and/or composite parts must result in cohesive failure only. Any adhesive failure will be cause for
12、rejection. 3.5.4 Cold Flexibility at -30C No cracks (180 bend over a 20 1 mm diameter mandrel, sample size 50 x 150 1 mm) 3.5.5 Ozone Resistance (Except for TPE, TPO) Rating 0 max (FLTM BP 101-01, Procedure A) 3.6 COLOR PROPERTIES 3.6.1 Contact and Migration Staining of Paint (FLTM BP 153-01 AATCC E
13、valuation Procedure 2) No migration staining Rating 5 min Slight contact staining permitted Rating 4 min (NOTE: Only required when an elastomeric part comes in contact with a painted surface.) 3.6.2 Crocking Test Rating 4 min (FLTM BN 107-01, AATCC Evaluation Procedure 2, Wet Method) 3.6.3 Soiling a
14、nd Cleanability (for light colors only) (FLTM BN 112-08, AATCC Evaluation Procedure 2) Standard Soil Rating 3 min Grease Rating 3 min Coffee Rating 3 min ENGINEERING MATERIAL SPECIFICATION WSS-M9P8-C Copyright 2017, Ford Global Technologies, LLC Page 3 of 5 3.6.4 Resistance to Interior Weathering (F
15、LTM BO 116-01, sample size 60 x 150 mm minimum, AATCC Evaluation Procedure 1) In Vehicle Sunlight Exposure Level FLTM BO 116-01 Test Exposure AATCC Rating After Exposure, min. Severe Exposure: Parts used in these locations Instrument panel top, defroster grille, parcel shelf assembly/package tray, i
16、nterior rear view mirror housing. 3609.6 kJ/m2 Rating 4 Heavy Exposure: Parts used in these locations Instrument panel lower top cover, 2 tone IP, IP bezel, airbag, steering wheel, message center, appliqus and center finish panel. 2406.4 kJ/m2 Rating 4 Above the Belt-line: Parts used in these locati
17、ons Instrument panel lower, door trim, interior trim, pillars, garnish moldings, seats, head rest, sunshade, sun visor, seat belt webbing Otherwise, PV testing must be run. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of
18、this specification. Contact for questions concerning Engineering Material Specifications. 4.1 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally a
19、pproved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the ENGINEERING MATERIAL SPECIFICATION WSS-M9P8-C Copyright 2017,
20、Ford Global Technologies, LLC Page 5 of 5 proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications, all samples tested to the specifications for Design Verification (DV), Pro
21、duction Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.2 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identifie
22、d in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. 5. SUMMARY OF REVISIONS 2017 09 01 Split DV testing up between visible and non visible
23、Addeed for visible and non visible for PV test column 2017 07 24 Removed Engine reference in limitations Added DV/PV test plan para 3.3 Updated short and long term environmental testing to FLTM BO 040-01 Changed cold flexibity from -40 to -30 C Removed SAE for flammability Added conditioning for fogging Update table quantities,added clarity regarding DV/PV testing, added MCDCC testing columns
