1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2017 07 05 Released A. Wagenhals, NA Controlled document at www.MATS.com Copyright 2017, Ford Global Technologies, LLC Page 1 of 8 PERFORMANCE, LEATHER STEERING WHEEL, WSS-M98P12-C2 SHIFT KNOB OR BOOT 1. SCOPE This specification define
2、s the performance requirements for tanned top grain or split leather made from steer hides to be used in steering wheel, shift/handbrake boot or knob applications. 2. APPLICATION This performance specification is to be used for steering wheel, shift/handbrake boot or knob applications. The material
3、must also meet its respective WSS-M1F21 or WSS-M1F22-X specification requirements. 2.1 LIMITATION Foam used on the leather wrapped steering wheel cannot contain Dioctyl phthalate (DOP) in its formulation. Foam containing DOP will migrate thru the leather and cause topcoat peel in the field. 3. MATER
4、IAL REQUIREMENTS 3.1 APPROVED 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% rel
5、ative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.3 SAMPLE SELECTION LOCATIONS The location of the test samples is described in ISO 2418 or ASTM D2813 for physical testing of leather samples. For the material approval, samples are to be tak
6、en for the belly and backbone as noted in Table 1. Component level DV/PV testing requirements are referenced in Table 2. Additional FSMS/SDS requirements are to be met as required from Ford Product Development Engineering. 3.4 APPEARANCE The color, grain, gloss and hand shall match the approved Corp
7、orate Design master sample. ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Technologies, LLC Page 2 of 8 3.5 LOT CERTIFICATION Each lot of finished hides is required to be inspected and certified by the finisher to the requirements listed in the control plan (see Table
8、1). 3.6 FOGGING (GRAVIMETRIC) (SAE J1756 16 h at 100 C heating, 21 C cooling plate, post testing conditioning, 4 h) Weight of Condensate 4.0 mg max All materials, parts and components should be stored in an open environment for 14-28 days after manufacture, and then must be bagged in sealed polyethy
9、lene (PE) or PE coated aluminum bags for shipping. Parts for testing must be labelled with supplier and date of manufacture. After conditioning, the samples shall be pre-dried by storing in a desiccator over silica gel or equivalent for a period of 2 days. 3.7 ODOR (FLTM BO 131-03, 90 X 200 mm speci
10、men, Variant B) Condition 1 Rating 3 max Condition 2 Rating 3 max Condition 3 Rating 3 max 3.8 FLAMMABILITY (ISO 3795) Burn Rate 100 mm/minute max 3.9 COLOR AND RESISTANCE PROPERTIES 3.9.1 Resistance to Interior Weathering Rating 4 min (FLTM BO 116-01, AATCC Evaluation Procedure 1) Component Exposur
11、e Steering Wheel 2406.4 kJ/m2 Shift Knob, Boot 977.6 kJ/m2 General Acceptance Criteria: The material shall not exhibit any change in appearance such as color change, fading or gloss change in excess of the required AATCC rating. In addition, the material must remain flexible and exhibit no cracking
12、at 6 6.5X magnification when bent around a 10 mm mandrel when tested on a hide. 3.9.2 Resistance to Heat Aging Rating 4 min (7 days at 107 +/- 2 C, AATCC Evaluation Procedure 1) 3.9.3 Resistance to Humidity (7 days at 70 +/- 2 C and 95 +/-5% RH Rating 4 min AATCC Evaluation Procedure 1) There shall
13、be no tone or gloss change or any loss of grain definition. Samples to be suspended vertically in the test cabinet. ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Technologies, LLC Page 3 of 8 3.9.4 Soiling and Cleanability Rating 4 min (FLTM BN 112-08, AATCC Evaluation
14、 Procedure 1) Test only grease and standard soil. 3.9.5 Leather Test for Color Fastness-Rub Resistance Rating 4 min (ISO 11640, 10% elongation/mount felt pad 2-3 mm in the holder/ AATCC Evaluation Procedure 2) The surface shall show no evidence of wear through of top coat or painted layer, including
15、 bubbling of surface coating or particulate transfer onto felt pad. 3.9.5.1 Dry Felt 2,000 cycles 3.9.5.2 Wet Felt 500 cycles 3.9.5.3 Commercially Available Window Cleaner 100 cycles 3.9.5.4 Leather Cleaner per FLTM BN 112-08 100 cycles 3.9.5.5 Acetic Acid Solution (5% in deionized water) 100 cycles
16、 3.9.5.6 Ethyl Alcohol/ Deionized water 70% v/v 100 cycles 3.9.5.7 Suntan Lotion 100 cycles (Apply 0.16 +/- 0.01 grams of Sunscreen or sunblock lotion with SPF factor of 30, water-proof and commercially available) 3.9.5.8 Insect Repellant 100 cycles (20-30% DEET commercially available) 3.9.6 Leather
17、 Test for Color Fastness-Rub Resistance/ Rating 4 min Perspiration Agent (ISO 11640/EN ISO 105-E04, 500 cycles AATCC Evaluation Procedure 2) Use both acid and alkaline perspiration solutions. 3.9.6.1 Sample as received 3.9.6.2 Sample after Fade Resistance Per para 3.9.1 3.9.6.3 Sample after Heat Agi
18、ng Per para 3.9.2 3.9.6.4 Sample after Humidity per para 3.9.3 The surface shall show no evidence of wear through of top coat or painted layer, including bubbling of surface coating or particulate transfer onto felt pad. ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Te
19、chnologies, LLC Page 4 of 8 3.10 CONSTRUCTION PROPERTIES 3.10.1 Abrasion Resistance- Taber Abrader 5,000 cycles (SAE J948, CS-10 wheel, 500 g load, S-36 specimen mounting card) The surface shall show no evidence of top coat wear through to the russet or significant loss of grain from the original. 3
20、.10.2 Resistance to Scuffing 1,000 cycles (SAE J365, A head, 0.9 kg, S-36 specimen mounting card) The surface shall show no evidence of top coat wear through to the russet or cracking or significant loss of grain from the original. 3.10.3 Cold Flexibility No cracking (SAE J323, Method A, -30 C) The
21、material must remain flexible and be without cracks after bending 180 around the mandrel. The material also must exhibit no cracking at 6 6.5X magnification when bent around a 10 mm mandrel when tested on a hide. 3.10.4 Bally Flex Test, (Shift Boot Only) (FLTM BN 162-01) 3.10.4.1 Original 60,000 cyc
22、les 3.10.4.2 After Heat Aging per 3.9.2 30,000 cycles 3.10.4.3 After Humidity Aging per 3.9.3 30,000 cycles The material must remain flexible and exhibit no cracking at 6 6.5X magnification when bent around a 12 +/- 2 mm mandrel when tested on a hide. 3.11 PART ASSEMBLY/COMPOSITE TESTING (to be done
23、 on wrapped steering wheels assemblies) 3.11.1 Steering Wheel Wear Rubbing 180,000 cycles (RQT-110601-017086/9/latest) Test procedure: - Secure production representative steering wheel in test fixture. - Position a 44.5 +/- 2mm wide strip of #10 unbleached and unsized duck cloth on the steering whee
24、l rim. - Ensure a smooth and reciprocating stroke od 95 +/- 2mm at 25 +/- 2 strokes per minute is achieved. - The cloth must cover the steering wheel rim from one parting line to the other. - Weigh the free end of the cloth with a 0.45 +/- 0.05 Kg mass. - The test is to be run 180,000 cycles at an a
25、mbient air temperature of 21 +/- 3 degrees C. - The cloth is to be replaced at 90,000 cycles. - The number of cycles reached when wear becomes apparent is to be noted. Wear is defined as wear through to the russet. Fully losing the grain texture is allowed. - Test 6 samples per color. - Record and r
26、etain the test results and samples for review with the appropriate Ford representative. ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Technologies, LLC Page 5 of 8 This test applies to all steering wheel substrate materials. Note: The Duck cloth can be obtained at the
27、following address: Test Fabrics Inc P.O Box 26 415 Delaware Ave. West Pittston, Pennsylvania 18643 PH: 507-603-0432 Fax 507-603-0433 3.11.2 Steering Wheel Environmental Dimensional Stability Rating 4 min (RQT-110601-017089/10/latest, FLTM BO 040-01, Procedure A, 100 C) 3.11.3 Resistance to Heat Agin
28、g Rating 4 min (7 days at 107 +/- 2 C, AATCC Evaluation Procedure 1) Appearance Evaluation: No evidence of cracks, blisters, peeling, delamination, or change in gloss when compared with original unaged sample. 3.11.4 Steering Wheel Twist Retention 5 Nm min at 22 C (RQT-110601-017081/10/latest) 5 Nm
29、min at 60 C Test procedure: Cement 4 pieces of leather (4mm x 50mm x rim circumference) at the points where the torques are to be applied. An alternative method would be to use a toothed clamping block to apply torque to the rim material. Apply only enough clamping force as is required to prevent th
30、e clamp from slipping on the rim surface material. The test samples must be conditioned for a minimum of 3 hours at 22 +/- 2 C or 60 +/- 2 C. The high and low temperature samples must be tested within 5 minutes after removal from the conditioning chamber, or an appropriate time as determined by cool
31、ing rate tests at supplier facility. The Ford engineering approved test fixture is clamped to the wheel rim and torque is applied for 60 seconds, or until the rim material breaks free from the supporting substrate, or insert structure. For leather wrapped spokes, the spokes area must also be tested
32、in a similar manner. For heated steering wheels, the resistance change from pre and post test parts must be no more than 5 %. Each specific steering wheel may require unique clamping fixture due to its unique rim geometry. Record and retain steering wheels, sample lot information and torque/twist re
33、sults. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 APPROVAL OF MATERIALS Suppliers desiring approval of their materials sh
34、all first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Technologies, LLC Page 6 of 8 submit a completed copy of their laboratory test reports
35、, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will rev
36、iew the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.2 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to
37、making any changes to the material originally approved, 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 proposed change
38、s (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), Production Verification (PV) and Production Part Approval Pr
39、ocess (PPAP) sign off must be kept until Job 1. 4.3 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99
40、P9999-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 ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Technologies, LLC Page 7 of 8 TABLE 1: MATE
41、RIAL/HIDE REQUIRMENTS DATA TO BE SUBMITTED TO MATERIALS ENGINEERING (X-SAMPLE SIZE 1 HIDE) Para Testing Backbone/ Belly Location New Construction Approval (New Source approval) Control Plan Testing (Each Production Lot) New Grain or New Semi- Perforation (New /carry over color) New Color Only (Carry
42、 over Grain) 2.0 Application: WSS- M1FXX-XX/latest both 3 hides 3 hides 3.3 Appearance either X X X X 3.6 Fogging either X X 3.7 Odor either X X 3.8 Flammability either X X X X 3.9 Color and Resistance Properties 3.9.1 Resistance to Interior Weathering either X X X 3.9.2 Resistance to Heat Aging eit
43、her X X X 3.9.3 Resistance to Humidity either X X X 3.9.4 Soiling and Cleanability either X X X 3.9.5 Leather Test for Colorfastness-Rub Resistance 3.9.5.1 Dry Felt either X X X X 3.9.5.2 Wet Felt either X X X X 3.9.5.3 Window Cleaner either X X X 3.9.5.4 Leather Cleaner either X X X 3.9.5.5 Acetic
44、Acid Solution either X X X 3.9.5.6 Ethyl Alcohol/ DI Water either X X X X 3.9.5.7 Suntan Lotion either X X X 3.9.5.8 Insect Repellent either X X X X 3.9.6 Leather Test for Colorfastness-Rub Resistance/ Perspiration Agent 3.9.6.1 As received either X X X 3.9.6.2 After Fade either X X X 3.9.6.3 After
45、Heat Aging either X X X 3.9.6.4 After Humidity either X X X 3.10 Construction Properties 3.10.1 Abrasion Resistance both 3 hides X X 3.10.2 Resistance to Scuffing both 3 hides X X 3.10.3 Cold Flexibility both 3 hides X 3.10.4 Bally Flex Test * 3.10.4.1 As received * both 3 hides X X 3.10.4.2 After H
46、eat Aging * both 3 hides X 3.10.4.3 After Humidity * both 3 hides X *FOR SHIFT BOOT APPLICATIONS ONLY ENGINEERING MATERIAL SPECIFICATION WSS-M98P12-C2 Copyright 2017, Ford Global Technologies, LLC Page 8 of 8 TABLE 2: ASSEMBLY/COMPOSITE TESTING DATA TO BE SUBMITTED TO PD ENGINEERING PARA TESTING NEW
47、 LEATHER CONSTRUCTION /DV COMPONENT PV 3.6 Fogging 3 Wheels 3 Wheels 3.7 Odor 3 Wheels 3 Wheels 3.8 Flammability 5 Wheels FMVSS 302 can be used as surrogate. Testing is dependent on part size 3.9.1 Resistance to Interior Weathering 1 Wheel/color 1 Wheel/color 3.9.3 Resistance to Humidity 1 Wheels 1
48、Wheels 3.11.1 Steering Wheel Wear Rubbing 3 Wheels 3 Wheels 3.11.2 Steering Wheel Environmental Dimensional Stability 1 Wheel 1 Wheel 3.11.3 Long Term Heat Aging 1 Wheel 1 Wheel 3.11.4 Steering Wheel Twist Retention 1 Wheel 1 Wheel Note: Please use the test sampling size listed in the table as an initial reference. Actual test quantities will be directed by PD engineering.
