1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2016 05 12 Released D. Stark, A. Wagenhals FNA Controlled document at www.MATS.com Copyright 2016, Ford Global Technologies, LLC Page 1 of 7 ACETAL (POM) MOLDING COMPOUND, HOMOPOLYMER, WSS-M4D744-A5 HIGH IMPACT, LOW VOC EMISSION, INTER
2、IOR 1. SCOPE The material defined by this specification is a low volatile organic compound (VOC) emission, UV stabilized thermoplastic homopolymer acetal. 2. APPLICATION This specification was released originally for material used for visible, mold-in-color interior applications such as head rest gu
3、ides, restraint push buttons and D-rings. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The l
4、ist of approved sources is located within Ford at or available externally through a Ford Materials Engineer. The approved source for this specification is DuPont Delrin 127UVE 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to test
5、ing in a controlled environment of 23 2 C and 50 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.3 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS 3.3.1 This specification is based on virgin material and does not allow the addition o
6、f recycled content (PIR/PCR). 3.3.2 Materials requiring High Strain Rate, Creep or fiber oriented Tensile Modulus must test to the requirements of WSS-M99D68-A1/Latest, Thermoplastic Property Determination. For CAE, High Strain Rate Tensile, Creep and Tensile Modulus. Data must be included in the ma
7、terial submission package. 3.3.3 Performance Criteria: Parts using this specification shall meet the appropriate performance specification, WSS-M15P4-F/Latest. 3.4 PREPARATION OF TEST SPECIMENS All tests shall be carried out on production materials manufactured from the production process unless cor
8、relation to a non-production process has been reviewed and approved by Ford Materials Engineering. ENGINEERING MATERIAL SPECIFICATION WSS-M4D744-A5 Copyright 2016, Ford Global Technologies, LLC Page 2 of 7 Unless otherwise specified all tests shall be carried out on injection molded one-end gated te
9、st specimens. Specimens shall be as follows: Specimen A 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 527-2, Specimen Type 1A) Specimen B 355 x 100 x 1.0 +/- 0.1 mm Specimen C 145 x 60 x 3.2 +/- 0.2 mm Specimen D 80 x 10 x 4.0 +/- 0.2 mm (may be cut from the center of Specimen A) Specimen E 100 mm diameter
10、 x 3.2 mm Specimen F 80 mm diameter x 3.2 mm Specimen G 90 mm x 200 mm Specimen H 50 +/- 1 mm diameter x 3.2 +/- 0.2 mm Specimen I 100 mm x 150 mm, min 3.5 APPEARANCE 3.5.1 Weathering Resistance Rating 4 min (FLTM BO 116-01, 2406.4 kJ/m2 exposure Specimen C, ungrained, non-polished mold. ISO 105-A02
11、 / AATCC Evaluation Procedure 1) 3.6 MATERIAL PROPERTIES 3.6.1 Density 1.39 1.44 g/cm3 (ISO 1183, Method A) 3.6.2 Tensile Strength at Yield 71 MPa min (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed) 3.6.3 Elongation at Break 25% min (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute t
12、est speed) 3.6.4 Tensile Modulus 2.8 GPa min (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.6.5 Flexural Modulus 2.8 GPa min (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5 +/- 0.1 mm and of the
13、supports 2.0 +/- 0.2 mm) 3.6.6 Impact Strength, Notched Charpy (ISO 179-1/1eA, Specimen D) 3.6.6.1 At 23 2 C 15 kJ/m2 min Report Break Type3.6.6.2 At -40 2 C 10 kJ/m2 min Report Break Type The test specimen must be conditioned for minimum of 6 hours at the above specified ENGINEERING MATERIAL SPECIF
14、ICATION WSS-M4D744-A5 Copyright 2016, Ford Global Technologies, LLC Page 3 of 7 temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. 3.6.7 Heat Deflection Temperature 93 C min (ISO 75-1/
15、ISO 175-2, specimen D, flatwise Bath silicone oil, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.6.8 Heat Aging Performance (ISO 188, 150 50 air changes/h, 1000 h at 110 2 C) Anneal the test specimens at 120 oC for 72 hours. After heat aging test specimens are to be conditioned in a desiccator for 3 -
16、5 h at 23 2 oC. Unaged property values shall be determined at the time of the aged properties determination. 3.6.8 1 Tensile Strength at 120 C, Change 2.5 % max (Test Method per para 3.6.2 Annealing is allowed to calculate the percent change in Tensile Strength. The initial and final heat age tensil
17、e strength should be determined using annealed samples.) 3.6.8.2 Impact Strength, Charpy at 120 C, Change 11% max (Test Method per para 3.6.6 specimens to be notched before heat aging) 3.6.9 Interior Odor Test Rating 3 max (FLTM BO 131-03, Variant C, Specimen G) 3.6.10 Determination of the Fogging C
18、haracteristics of Interior Automotive Materials Photometric (SAE J1756, Specimen F, 3 h at 100 oC heating, 21 oC cooling plate, post test conditioning 16 h) Fog Number 70 min Formation of clear film, droplets or crystals is cause for rejection. 3.6.11 Flammability (ISO 3795/SAE J369, Specimen B, smo
19、oth surface) Burn Rate 100 mm/min max ENGINEERING MATERIAL SPECIFICATION WSS-M4D744-A5 Copyright 2016, Ford Global Technologies, LLC Page 4 of 7 3.7 MATERIAL PROPERTIES REPORT ONLY 3.7.1 Melt Flow Rate Report Value, g/10 min (ISO 1133, 190 C, 2.16 kg) 3.7.2 Mold Shrinkage (Report method used, sample
20、 size and value) After 48 h at 23 2 C Flow Report Value, % Cross Flow Report Value, % 3.7.3 Coefficient of Linear Thermal Expansion (ISO 11359-2, -30 2 C to Tg, Tg to 100 2 C) Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 mm/mm/ C 3.7.4 Water Absorption Report Value, % (ISO 62, 24 h i
21、mmersion, Specimen H) 3.7.5 Poissons Ratio Report Ratio (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.7.6 Supplemental Information The following curves are to be submitted with the data packages: FTIR TGA DSC first and second heat Engineering Stress/Strain at 23 C 4. GENERAL INFORM
22、ATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. ENGINEERING MATERIAL SPECIFICATION WSS-M4D744-A5 Copyright 2016, Ford Global Technologies, LLC Page
23、 5 of 7 4.1 TYPICAL PROPERTIES USING METHODS IN SECTION 3.7 Para. Test Typical Value Units 3.7.1 Melt Flow Rate 1.6 3.3 g/10 min 3.7.2 Molding Shrinkage (Report method used, sample size and value) After 48 h at 23 2 C Flow Cross Flow 1.9 2.1 1.9 2.1 % % 3.7.3 Coefficient of Linear Thermal Expansion
24、Flow Cross Flow 13 13 E-5 mm/mm/ C E-5 mm/mm/ C 3.7.4 Water Absorption 0.19 % 3.7.5 Poissons Ratio 0.37 N/A 4.2 GENERIC IDENTIFICATION AND MARKING OF PLASTIC PRODUCTS POM (ISO 1043) 4.3 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest
25、from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Sp
26、ecification. Tested material samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.4 SUPPLIER
27、S 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 approved, whether or not such changes affect the materials ability to meet the specification requirement
28、s, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Materi
29、al Specifications, all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.5 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company
30、direction applies to the materials addressed by this document. The restrictions are identified 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 repor
31、ting. ENGINEERING MATERIAL SPECIFICATION WSS-M4D744-A5 Copyright 2016, Ford Global Technologies, LLC Page 6 of 7 Table 1: Minimum Sample Size Initial Approval and/or Initial Approval in a New Region and New Manufacturing Location Approval for Recycled Materials New Manufacturing Location for Previou
32、sly Approved Material Para. Test Minimum Lots Specimens per Lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.3.2 WSS-M99P2222-D1/Latest Total Carbon, Hazardous Substances, Formaldehyde, Acraldehyde, Acetaldehyde (See below for Odor and Fogging) Reference the Performance Specifi
33、cation 3.3.3 Thermoplastic Property Determination For CAE WSS-M99D68-A1 Reference the Performance Specification 3.3.4 WSS-M15P4-F 3.6.1 Density 1 3 3 1 3 3 3.6.2 Tensile Strength at Yield 3 5 15 1 5 5 3.6.3 Elongation at Break 3 5 15 1 5 5 3.6.4 Tensile Modulus* 3 10 30 3.6.5 Flexural Modulus 1 10 1
34、0 1 10 10 3.6.6 Impact Strength Notched Charpy (per condition)* 3 10 30 1 10 10 3.6.7 Heat Deflection Temperature (per condition)* 3 2 6 1 2 2 3.6.8 Heat Aging Performance 3.6.8.1 Tensile Strength at 120 oC, Change 1 5 5 3.6.8.2 Impact Strength, Notched Charpy, Change 1 10 10 3.6.9 Odor (Interior ap
35、plications only) 1 9 9 3.6.10 Fogging Photometric (Interior applications only) 1 3 3 3.6.11 Flammability 1 5 5 ENGINEERING MATERIAL SPECIFICATION WSS-M4D744-A5 Copyright 2016, Ford Global Technologies, LLC Page 7 of 7 Table 2: Minimum Color Property Testing - Contact Materials Engineering for Color
36、Test Work Plan 5. SUMMARY OF REVISIONS Para. Test Lots Specimens per Lot Total Test Specimens Color Test Direction 3.5.1 Weathering Resistance 1 1 1 Every color 3.6.2 Tensile Strength at Yield 1 5 5 As directed by Materials Engineering 3.6.5 Flexural Modulus 1 10 10 As directed by Materials Engineering 3.6.6 Impact Strength, Notched Charpy at 23 2 C 1 10 10 As directed by Materials Engineering 3.6.9 Odor 1 9 9 As directed by Materials Engineering 3.6.11 Flammability 1 5 5 As directed by Materials Engineering
