ENGINEERING MATERIAL SPECIFICATION

PERFORMANCE, ACOUSTICAL AND THERMAL ASSEMBLIES WSS-M99P32-A

NOT TO BE USED FOR NEW DESIGN

1. SCOPE

This specification defines the minimum durability and performance requirements of all thermal and
sound absorption applications, where various materials are combined to provide an assembly having
thermal and/or acoustical (sound absorption/barrier) and/or functional features. This includes
passenger, loadspace, engine compartment and underbody thermal and/or acoustical (sound
absorbing/barrier/insulation) parts.

2. APPLICATION

This specification was released originally for materials used as passenger, luggage compartment,
engine compartment and underbody thermal and/or sound absorbing insulators.

3. REQUIREMENTS

Material specification requirements are to be used for initial qualification of materials.

In addition to the requirements listed herein all materials must meet performance requirements
referenced on engineering drawings. Luggage compartment trim, package tray assemblies, headliners,
passenger compartment carpets, seat trim cover assemblies and interior trim must meet the
requirements of their respective performance specifications. Applicable requirements for specific
applications are listed in Table 1 at the end of this document.

3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS

Material suppliers and part producers must conform to the Company's Standard Requirements
For Production Materials (WSS-M99P1111-A).

3.4 FINISHED PART REQUIREMENTS

In addition to the following minimum requirements, production assemblies must withstand

normal handling during shipping, installation, use and service, without tearing, breaking, or
permanently deforming. Specific sampling areas may be required, these will be highlighted on
the Engineering Drawing.

3.5 APPEARANCE
(FLTM BI 109-01)

All appearance properties of exposed materials shall meet the requirements of the relevant
System Engineering Department.

Date Action Revisions

2006 03 31 N-STATUS Replaced by WSS-M99P32-B; Inserted 3.0; Deleted 3.1,
3.2, 3.3, 3.19, 3.20 & 4; Revised Table B. Witkowski

2000 05 30 Revised Rev para 3.12, 3.16 & 3.17 L. Soreide, J. Williams

1998 10 05 Activated J. Williams, D. Whyte

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3.6 ENVIRONMENTAL TESTING

The assembly, after the test, shall exhibit no visible and objectionable appearance such as:

. Wrinkling
. Distortion
. Blistering
. Delamination
. Expansion, shrinkage or warpage which will interfere with normal function or cause
objectionable and unsightly gaps.

In addition, any objectionable appearance observed during the test should be reported.

Test Method: Conduct with the NVH or approved surrogate assembly mounted on an actual or
simulated production support foundation with the approved retention methods. The assemblies
shall be subjected to the environmental cycles specified in paragraph 3.6.1 and 3.6.2.

Automated programmable test cycles based on the listed test conditions may be accepted by
prior agreement with the affected Materials Engineering Activity. Ramp speed 1 to 5 °C per
minute (record actual ramp speed on data sheet).

3.6.1 Applicable to Interior Parts

. 5 h at -35 +/- 2 °C
. 30 minutes at 23 +/- 2 °C and 50% R.H.
. 5 h at 80 +/- 2 °C
. 30 minutes at 23 +/- 2 °C and 50% R.H.
. 2 h at 50 +/- 2 °C and 95 +/- 5% R.H.
. 30 minutes at 23 +/- 2 °C and 50% R.H.
. 5 h at - 35 +/- 2 °C
. 30 minutes at 23 +/- 2 °C and 50% R.H.
. 5 h at 80 +/- 2 °C

3.6.2 Applicable to Engine/Underbody Parts

. 5 h at - 35 +/- 2 °C
. 48 h at 38 +/- 2 °C and 95% R.H.
. 48 h at 150 +/- 2 °C
. 5 h at - 35 +/- 2 °C
. 48 h at 38 +/- 2 °C and 95% R.H.
. 48 h at 150 +/- 2 °C

3.6.3 Long Term Heat Exposure

Test one previously unexposed assembly:

3.6.3.1 For interior parts

7 days at 80 +/- 2 °C

3.6.3.2 For engine/underbody parts

7 days at 150 +/- 2 °C

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 ENGINEERING MATERIAL SPECIFICATION

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3.7 PHYSICAL PROPERTIES

3.7.1 Tensile Strength

(ASTM D 5034)

Specimens to be cut from flat areas of the finished part. Speed of testing 25
mm/minute; distance between clamps at beginning of test should be 100 mm.

3.7.1.1 Original (N/cm2) 10 - 150

Specific values to be quoted

on the Engineering Drawing.

3.7.1.2 Change After Humidity Aging, %, max -30

(48 h at 38 +/- 2 °C and 95
+/- 2% R.H.; 1 h at
room temperature)

3.7.1.3 Change After Heat Aging, %, max -15

(14 days at 38 +/- 2 °C, 1 h at
room temperature)

3.7.1.4 Change After Immersion In Water, %, max -30

(48 h in distilled water
at room temperature)

3.7.2 Compression and Recovery

(For padding materials only)
(SAE J1352 or equivalent)

Shall not compress more than 70% of the original thickness, after loading with 35 kg.

Upon removing the load, the material shall recover at least 65% of the compressed
distance.

3.7.3 Compression Set, max 12%

(For foam materials only)
(ISO 1856, Method A/ASTM D 3574, Test D)

3.7.4 Tear Strength (N/cm), min 50

(ASTM D 5733 for non-woven materials)
(ASTM D 3574, Test F, for foam materials)

Specimens to be cut from flat areas of finished parts.

3.7.5 Peel Strength (Laminates only)

(FLTM BN 151-05, 30 minute immersion)

Samples are cut to 250 mm lengths. Each sample tested is subjected to one of the
following fluids quoted in 3.8.

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 ENGINEERING MATERIAL SPECIFICATION

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Samples must meet at least one of the following requirements:

. Achieve peel strength value of 9 N/50 mm, min

. Adhesion of the cover material shall exceed the cohesive strength of the fabric
substrate.

3.8 RESISTANCE OF INSULATORS TO VARIOUS TEST REAGENTS

(ASTM D 896)

The finished or surrogate part shall not dissolve, exhibit tackiness or delaminate when
immersed in each of the following test reagents for a 4 hour period. Use a separate specimen
for each test reagent.

Test Reagents:

1. Deionized Water
2. 3% Salt Solution
3. Oil No. 1 of ASTM D 471*
4. Brake fluid FMVSS DOT 3 or FMVSS DOT 5.1*
5. Sulfuric acid (10% by weight in distilled water)
6. Longlife coolant WSS-M97B44-D (50% by weight in distilled water)*
7. Transmission fluid WSS-M2C200-C*
8. Window washer solvent 50% Methanol or Ethanol or Isopropyl Alcohol*
9. Power Steering Fluid WSA-M2C195-A

*Or currently released equivalent fluid.

3.9 MOISTURE ABSORPTION, %, max 30

1. Cut a 200 x 200 mm specimen from the part to be tested and seal any cut edges, e.g.
with wax.

2. Weigh the specimen (200 x 200) nearest to 0.1 g.

3. Condition part/section in suspended position at 38 +/- 2 °C and 95 +/- 2% R.H. for 24 h.

4. After 1 h at room temperature weigh the part/section nearest to 0.1 g and determine
increase of weight in percentage based on the original weight.

3.10 LOW TEMPERATURE FLEXIBILITY

(Aluminum foil/fabric laminates only)

No sign of cracking or delamination of the foil laminate after the sleeve is conditioned at -35 °C
for 5 h, and then wrapped around a mandrel which is 2 times the nominal diameter of the
sleeve or a 12.7 mm diameter mandrel (for flat laminates). Sample length for the test is
300 mm.

3.11 ACOUSTICAL PROPERTIES

The acoustic performance requirements are not defined in this specification. The performance
should be established on individual components and the requirements noted on the
Engineering Drawing.

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3.11.1 Airborne Noise Reduction (for sound barriers only)

(SAE J1400)

Noise reduction should be as specified on the Engineering Drawings.

3.11.2 Sound Absorption (for sound absorbers only)

(ASTM C 384/ASTM E 1050)

Sound absorbed should be as specified on the Engineering Drawings.

3.11.3 Vibration Damping (For Vibration Dampers only)

(ASTM E 756/SAE J1637)

Vibration damping should be as specified on the Engineering Drawing.

3.12 THERMAL PROPERTIES

The surface of the part/material being protected shall not reach its maximum use temperature
when tested at the maximum vehicle use temperature as determined from applicable vehicle
tests.

3.12.1 Thermal Conductivity, max (W/M/deg K)

(ASTM C 518, C 177)

As specified on the engineering drawings

3.12.2 Heat Resistance,

(for thermal insulators only)

Insulation materials shall not crack, warp, flame, glow, smolder, degrade, delaminate,
develop an objectionable odor or exhibit any exothermic reaction when tested at the
maximum vehicle use temperature as determined from applicable vehicle tests.

3.12.3 Floor Heat Insulation, max 60 °C on the

(Interior acoustical and thermal top surface of
insulators, (SAE J1361, 2h)) floor systems

Test at the maximum vehicle floor pan temperature (without throw in mats) as
determined from floor heat mapping studies conducted by the Ford heat management
team.

The heat resistance for any other application would be as specified on the
Engineering Drawing.

3.12.4 Thermal Sleeve Heat Insulation

(SAE J2302)

3.13 ODOR, max (for interior parts only) max Rating 2

(FLTM BO 131-01)

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3.14 FOGGING
(applicable to interior parts only)
(SAE J1756, 3 h at 100 °C heating, 21 °C
cooling plate, post test conditioning 1 and 16 h)

Fog Number, min 70

Formation of clear film, droplets or crystals is cause for rejection.

3.15 RESISTANCE TO MILDEW

The material shall exhibit no visible evidence of mildew growth and/or objectionable odor after 7
days exposure in a humidity cabinet maintained at 98 +/- 2% relative humidity and 38 +/- 2 °C.

3.16 FLAMMABILITY
(SAE J369/ISO 3795)

3.16.1 Burn Rate, max 100 mm/minute

For engine/underbody components:

3.16.2 Burn Rate SE 10 seconds

3.16.3 Burn Rate (Test Sample Temp. 150 °C) SE 20 seconds

The flame must extinguish within the specified time after the ignition flame is removed
and must not glow or smolder.

3.17 FLAMMABILITY Does not ignite

(VDE 0471, Part 2/IEC 695 Part 2-1,
Hot wire: 750 °C)

For engine/underbody components only.

3.18 CORROSIVENESS TO STEEL, min Rating 4

(SAE J1389)

5. GENERAL INFORMATION

The information given below is provided for clarification and assistance in meeting the requirements of
this specification.

5.1 Suppliers can use the following tests for developmental work.

5.1.1 Absorption Properties

(Alpha Cabinet, frequency range 400 - 10,000 Hz)

5.1.2 Sound Insulation Properties

(Apamat II Cabinet, frequency range 100 - 6300 Hz)

5.2 Purchase departments will ensure that materials defined in this specification and shipped to any
one assembly plant will be produced by one supplier only.

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Table 1 Applicable Test Requirements

Shown below are the applicable paragraphs for each acoustical or thermal material applications.

Applications Paragraph

Interior 3.0, 3.4, 3.5, 3.6.1, 3.6.3.1, 3.7.1.1,

3.7.1.2, 3.7.1.3, 3.7.1.4, 3.7.2, 3.7.3, 3.7.4,
3.9, 3.10, 3.11.1, 3.11.2, 3.11.3, 3.12.1, 3.12.2,
3.12.3, 3.12.4, 3.13, 3.14, 3.15, 3.16.1, 3.18

Engine/Compartment
Underbody 3.0, 3.4, 3.5, 3.6.2, 3.6.3.2, 3.7.1.1, 3.7.1.2,
3.7.1.3, 3.7.1.4, 3.7.2, 3.7.3, 3.7.4, 3.7.5, 3.8,
3.9, 3.10, 3.11.1, 3.11.2, 3.11.3, 3.12.1, 3.12.2,
3.12.3, 3.12.4, 3.13, 3.14, 3.15, 3.16.1, 3.16.2,
3.16.3, 3.17, 3.18

Thermal Insulators 3.0, 3.4, 3.5, 3.6.2, 3.6.3.2, 3.7.1.1, 3.7.1.2, 3.7.1.3,
3.7.1.4, 3.7.4, 3.7.5, 3.8, 3.9, 3.10, 3.11, 3.12.1,
3.12.2, 3.12.3, 3.12.4, 3.14, 3.15, 3.16.1, 3.16.2,
3.16.3, 3.17, 3.18

Other 3.0, 3.4, 3.5

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