gmw 3232-test method for determining the flammability of interior trim materials

WORLDWIDE ENGINEERING STANDARDS

Test Procedure GMW3232

Test Method for Determining the Flammability of Interior Trim Materials

Copyright 2011 General Motors Company All Rights Reserved

August 2011 Originating Department: North American Engineering Standards Page 1 of 15

1 Scope

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

1.1 Purpose. This test method shall be used to determine the horizontal burn rate of automotive materials. Burn rate is determined immediately following an exposure for a short duration to a small flame. The small flame is placed in contact with one edge of the material.

1.2 Foreword. Not applicable.

1.3 Applicability. The method permits testing of materials and parts of the vehicle interior, individually or in combination up to a thickness of 13 mm. It is normally only applicable to materials and parts within a 13 mm range to the passenger compartment air space.

1.3.1 Testing Frequency. All sources supplying parts or materials to this requirement must perform routine quality control testing to confirm compliance of each lot of material or parts produced.

1.3.2 Lot Identification. Each lot of material shall remain readily available and identifiable, until the tests are complete so it may be retrieved in the event of inspection and/or test failure. Each lot of material shall have a unique identification.

1.3.3 Use of Incoming Material Test Data. When a source location can demonstrate that their process does not adversely affect flammability, the source location may use test data from each lot of incoming material.

2 References

Note: Only the latest approved standards are applicable unless otherwise specified.

2.1 External Standards/Specifications.

CONTRAN Resolution 675/86 GB8410

FMVSS 302 KMVSS Article 95

2.2 GM Standards/Specifications.

GMW3221

2.3 Additional References.

None

3 Resources 3.1 Facilities.

3.1.1 Test Cabinet. One configuration satisfying these requirements is shown in Figures A1 thru A3.

The test cabinet consists of a rectangular steel cabinet of approximately internal dimensions 381 mm long, 203 mm deep and 356 mm high. It shall have a heat resisting glass observation window, a closable opening to permit insertion of the test specimen mounting fixture and a hole to accommodate tubing for a gas burner. A 13 mm clearance space around the top of the cabinet, ten 19 mm diameter holes in the base of the cabinet and legs to elevate the bottom of the cabinet by 10 mm are to be provided for ventilation.

3.1.2 Apparatus for conditioning as required and to the appropriate requirements as described in GMW3221 (Code A), unless otherwise specified in the relevant material specification.

3.1.3 Drying oven capable of maintaining the specified temperature within the specified tolerances.

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GM WORLDWIDE ENGINEERING STANDARDS GMW3232


August 2011 Page 2 of 15

3.1.4 Chemical Fume Cupboard. Chemical fume cupboard suitable for mounting the test cabinet to avoid the diffusion of combustion products to the laboratory during test. A natural venting hood is permissible, provided adequate ventilation is assured. Any forced air ventilation shall be the minimum required for venting.

3.2 Equipment.

3.2.1 Test Specimen Mounting Fixture. One configuration satisfying these requirements is shown in Figures A4 and A5.

This shall consist of two matching U-shaped frames of metal (e.g., aluminum) stock 25 mm wide and 10 mm thick. The interior dimensions of the U-shaped frames shall be 51 mm wide by 330 mm long. Gauge lines shall be marked (e.g., by slots) on the upper frame 38 and 292 mm respectively from its open end.

In order to support sub size test specimens and those that soften and bend during test, the lower frame shall have the means to accommodate thin heat resistance wires that span the width of the U-shaped frame at 25 mm intervals. (Grooves cut into the lower frame to accommodate 0.2 mm, nickel-chrome, thermo wire are recommended.)

3.2.1.1. Specific Korean Legal Requirements (KMVSS Article 95). In order to support sub size specimens where the maximum available width is 50 mm or less, the lower frame shall have the means to accommodate thin heat resistant wires that span the width of the U-shaped frame at 25 mm intervals. Wires shall not be used for other reasons than above for certification to KMVSS Article 95. (Grooves cut into the lower frame to accommodate 0.2 mm, nickel-chrome, thermo wire are recommended.)

3.2.2 Support Stand. One configuration satisfying these requirements is shown in Figure A6.

A metal stand to locate and support the test specimen mounting fixture (3.2.1) in the center of the cabinet during test is required.

3.2.3 In order to detect when the flame front has progressed to each of the gauge lines, it is recommended to use lightweight cotton thread counterbalanced with approximately 14 g weights spanning the full width of the lower frame at the gauge lines (Figure A4).

3.2.4 A stopwatch calibrated to an accuracy of 0.5 s.

3.2.5 Bunsen burner with a tube of (10.0 0.5) mm inside diameter and provided with a gas adjusting valve to give a flame (38 1) mm high when the tube is vertical and the air inlet to the burner is closed.

3.2.6 Gas to provide a flame temperature equivalent to that of natural gas.

3.2.7 Metal comb with seven to eight smooth rounded teeth per 25 mm.

3.2.8 Cutting dies or shears for preparation of test specimens.

3.2.9 Specific Chinese Legal Requirements (GB8410) Ventilating Cabinet. The combustion box shall be placed in a ventilating cabinet. The inner volume of the cabinet shall be 20 to 110 times that of the combustion box, and none of the length, width or height may be more than 2.5 times greater than either of the other two dimensions.

At points 100 mm from the front and back of the final position of the combustion box, measure the speed of air passing the ventilating cabinet. The speed must be 0.10 to 0.30 m/s.

3.3 Test Vehicle/Test Piece.

3.3.1 Wherever possible, from the available material or component, rectangular test specimens (355 2) mm long and (100 2) mm wide, shall be taken. The thickness of the test specimens shall be that of the single or composite material used in the vehicle, except when the materials or composites thickness exceeds 13 mm. Then the test specimens shall be cut down to 13 mm, measured from the surface of the specimen closest to the passenger compartment air space.

3.3.2 Where it is not possible to obtain flat test specimens due to surface curvature, the test specimens shall be cut to not more than 13 mm in thickness at any point. As far as possible the test specimens shall be of uniform thickness.

3.3.2.1 Specific Chinese Legal Requirements (GB8410). If the part is bent so that it is impossible to take a flat sample, then take the part that is most flat and make the arch rise of the sample not more than 13 mm. If the arch rise of the sample exceeds 13 mm, then make a standard sample with the same material, same technique and same structure as the part (356 mm 100 mm), and let the thickness be the minimum width but not greater than 13 mm.

3.3.3 Testing of Smaller Sized Samples.






3.3.3.1 General Requirements. The maximum available length or width of test specimens shall be used where either dimension is less than (355 2) mm and (100 2) mm respectively.

3.3.3.2 Specific Japanese Legal Requirements. The minimum acceptable sample size shall be 25 mm in width and 293 mm in length.

3.3.3.3 Specific Brazilian Legal Requirements (CONTRAN Resolution 675/86). The minimum acceptable sample size shall be 3 mm in width, but samples (3 to 60) mm wide shall be (355 2) mm long, and samples (60 to 100) mm wide shall be at least 138 mm long.

3.3.3.4 Specific Chinese Legal Requirements (GB8410). Where the shape and size of the part are insufficient to be made into a standard sample of the specified size, then make a sample of the following minimum size, and keep records.

a. If the part is 3 to 60 mm wide, it shall be at least 356 mm long. In this case, make the width of the sample as close to that of the part as possible.

b. If the part is wider than 60 mm, it shall be at least 138 mm long. In this case, the possible burnt distance is equivalent to the distance from the first gauge mark to the place where the flame goes out or from the first gauge mark to the end of the sample as shown in Figure 2.

c. If the part is 3 to 60 mm wide but shorter than 356 mm or if it is wider than 60 mm but shorter than 138 mm, it shall not be tested according to GB8410. Samples narrower than 3 mm shall also not be tested.

3.3.4 Where sample sizes or shapes restrict the ability to test, molded samples of raw material shall be made 100 mm in width and 355 mm in length with a thickness no greater than the thinnest component cross section from the actual part for which the sample is being substituted.

In sampling the test panels it shall be ensured that they are fully representative of the material or composite under test.

3.3.5 In the case of materials made of superimposed layers of different materials which are not composite materials, all the layers of the materials included within a depth of 13 mm from the surface facing towards the passenger compartment air space shall be tested individually.

3.3.6 Test specimens shall be cut from materials or composites both in production direction and perpendicular to this (e.g., warp and weft direction, longitudinal and lateral direction, etc.) if possible. The material direction of the longitudinal and lateral test specimens must be clearly marked in a manner to identify their original orientation within the roll as shown in Figure 1. There shall be no ink markings within the test area of the specimen.

3.3.7 The requirement concerning transmission of a flame front shall not apply to a surface created by the cutting of a test specimen for purposes of testing.

3.3.8 Materials or composites with napped or tufted surface shall be placed on a flat surface and combed twice against the nap with a comb having seven to eight smooth rounded teeth per 25 mm.

3.3.9 For painted or molded in color plastic parts the data of the initial tested color can be used for other colors, if the burn rate (Bmax and Bstat) is 50 mm/minute for the tested color and if all of the following criteria are fulfilled:

3.3.9.1 Criteria.

Material is natural or integrally colored plastic

Material is made of one layer (no laminate, no composite, no cellular structure)

Same filler/additive package is used

Part has wall thickness of 2 mm






Figure 1: Example of Sampling

The following apply to Figure 1: 1. E.g., Material Roll 2. Material Direction 3. Longitudinal Test Specimens 4. Lateral Test Specimens

For specimens cut from direction 3, mark in alternating directions so that the material may be burned with the flame traveling into the roll (nearest to furthest) or out from the roll (furthest to nearest). For specimens cut from direction 4, mark in alternating directions so that the material may be burned from left to right or from right to left. See 4.3.1.1.

3.4 Test Time. Not applicable.

3.5 Test Required Information. Material component information such as vendor name, raw material, production date and pretreatment shall be reported to the test engineer.

3.6 Personnel/Skills. Not applicable.

4 Procedure

4.1 Preparation.

4.1.1 Conditioning. Immediately prior to tests all test specimens shall be conditioned for a minimum of 24 h according to GMW3221 (Code A).

4.1.2 Ageing. In addition to tests conducted in the as received condition, all materials which do not meet criteria to 3.3.9.1, shall additionally be tested for flammability after the following artificial condition. The test cycle shall commence with:

(48 1) h at (+40 3) C and (93 5)% relative humidity, followed by

(168 1) h at (+90 3) C

And completed without interruption.

4.1.3 Quantity of Test Specimens.

4.1.3.1 Initial Approval and Arbitration. For initial sample approval and arbitration purposes, at least 20 specimens shall be tested except when any individual specimen burn rate exceeds 100 mm/minute. If any individual specimen has a burn rate that exceeds 100 mm/minute the material does not meet the flammability requirement and all additional testing shall be terminated. If all burn rates are less than 100 mm/minute, test at least 10 specimens each from the longitudinal and lateral directions with at least 5 specimens tested as received and at least 5 specimens tested after having been aged. For each direction and condition, see 5.2.1.2 to determine if additional specimens must be tested.






4.1.3.2 Routine Quality Control. For quality control purposes, at least two specimens from both the lateral and longitudinal direction in the as received condition shall be tested from each production lot. For the samples from any one direction, half of the samples shall have the burn direction 180 from the burn direction of the other half of the samples.

The test shall be performed and the material must comply with the requirements of 5.2.2 and 5.2.2.1 of this specification prior to the release of the lot from the manufacturing facility.

4.1.3.2.1 Inherently Flame Resistant Materials. Materials which contain no added flame retardant additives and exhibit no burn rates in excess of 75 mm/minute during approval testing and after quality control testing of twenty successive production lots, shall be considered Inherently Flame Resistance. No further production quality control testing shall be required.

4.2 Conditions.

4.2.1 Environmental Conditions. Test shall be conducted at ambient conditions according to GMW3221 (Code A).

4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc.

4.3 Instructions.

4.3.1 Mount the test specimen, the surface closest to the passenger compartment air space facing downward, so that both sides and one end are held by the U-shaped frame, and one end is even with the open end of the frame. Where the maximum available width of the test specimen is 50 mm or less, so that the sides of the test specimen cannot be held in the U-shaped frame, place the test specimen in position on the wire supports with one end held by the closed end of the U-shaped frame. Test specimens shorter than 355 mm shall be positioned so that one end aligns with the open end of the U-shaped frame.

4.3.1.1 Test specimens with an identifiable material orientation (e.g., warp and weft direction, longitudinal and lateral direction) should be tested as follows:

Specimens from any one direction (e.g., warp and weft direction, longitudinal and lateral direction, 3.3.6 and Figure 1) shall be tested in alternate material directions (right to left versus left to right, and nearest to farthest versus farthest to nearest). That means for example the longitudinal test specimens should be alternatively tested in both the material and opposite material directions.

The same is valid for the lateral direction. In this case, using the flame as a reference point, the material direction of the test specimens shall be alternatively tested from both the right to left and left to right directions. If the material does not display an identifiable direction, the samples should be tested randomly with respect to the direction of burn and a notation of this exception made on the test report.

4.3.2 If the two counter balanced cotton threads are used (3.2.3), place them over the test specimen at the gauge marks.

4.3.3 Place the upper U-shaped frame onto the lower frame so that both frames are matching and the test specimen is firmly clamped. If necessary, align the threads in the grooved gauge marks in the upper frame.

4.3.4 Place the mounted test specimen on the support stand in a horizontal position in the center of the test cabinet.

4.3.5 Ignite the burner and adjust the flame height to (38 1) mm with the air inlet to the burner closed.

4.3.6 Position the burner and the test specimen so that the center of the burner nozzle is (19 1) mm below the center of the bottom edge of the open end of the test specimen.

4.3.7 Expose the test specimen to the flame for (15 1) s, then remove or extinguish the burner.

4.3.8 Begin timing (without reference to the period of application of the burner flame) when the flame front from the burning test specimen reaches the first gauge mark (i.e., 38 mm from the open end of the test specimen). If used, the first thread will break allowing the weight to fall.

4.3.9 Measure the time taken for the flame front to reach the second gauge mark (i.e., 38 mm from clamped end of test specimen). If used, the second thread will break allowing weight to fall.

If the flame front does not reach the second gauge mark, time its progress to the point where flaming stops and measure the length of the flame travel to this point, starting from the first gauge mark.

If the time taken for the flame front to reach the second gauge mark exceeds four minutes, the test may be terminated and must be noted as terminated on the test report. The burn distance and elapsed time must be measured, and this information must be included on the test report too.






5 Data 5.1 Calculations.

5.1.1 Calculate the burn rate from the formula:

B = Burn rate in mm/minute

S = Length the flame travels in mm

T = Time in s for the flame to travel S mm

5.1.2 Calculate the mean value from the formula:

Xm = Arithmetical mean value of test results from the same material direction and aging condition

Xi = Individual test result

n = Number of test specimens

5.1.3 Calculate the standard deviation from the formula:

= Standard deviation of test results from the same material direction and aging condition

5.1.4 Calculate the statistical burn rate of test results from each material direction and aging condition using the formula:

5.1.5 Report the burn rate of each of the test specimens tested using the terminology as defined in the following figure:

Figure 2: Zone Distribution

The following notes apply to Figure 2: Note 1: 2nd gauge mark Note 2: 1st gauge mark

Note: The zones within the burning area of the U-shaped frame above designate the general locations whereby the definitions listed below apply.

5.1.5.1 Zone A. Does Not Ignite (DNI).

The test specimen does not show any flame after the 15 s ignition period.

5.1.5.2 Zone B. Self Extinguishing (SE).

The test specimen ignites but does not burn to the first timing mark (end of Zone B).

5.1.5.3 Zone C. Self Extinguishing No Burn Rate (SENBR).






The test specimen ignites but stops burning before it has burned for 60 s from the start of timing, and does not burn more than 50 mm from the point where timing was started.

5.1.5.4 Zone D. Self Extinguishing with a Burn rate of B mm/minute (SEB).

The test specimen ignites but stops burning before the flame front exits Zone D. B is calculated from the formula in 5.1.1 and rounded to the nearest mm/minute.

5.1.5.5 Zone E. Burn rate of B mm/minute.

B is calculated from the formula in 5.1.1 and rounded to the nearest mm/minute.

5.1.5.6 Specific Chinese Legal Requirements (GB8410). In the cases where the sample is ignited by the flame and the flame reaches the first gauge mark within 15 seconds of initial application of the flame, the sample shall be regarded as not meeting the requirements for burning rate, and the result will be recorded as E.

5.1.6 The burn rate shall be recorded:

As the maximum burn rate of all individual test results from all material directions and aging conditions (calculated from formula in 5.1.1),

And as the maximum statistical burn rate BStat of all sets of test specimens from all material directions and aging conditions (calculated from formula in 5.1.4 in combination with 5.2.1.4),

Round up to the nearest mm/minute

5.2 Interpretation of Results.

5.2.1 Unless otherwise specifically agreed, the material under test shall be deemed to pass only if all test specimens tested conform to the following requirements:

5.2.1.1 Material described in 1.3 shall not burn, nor transmit a flame front across its surface, at a rate of > 100 mm/minute, if no lower burn rate is specified in the relevant material specification.

5.2.1.2 The sum of the arithmetical mean value plus threefold the standard deviation, defined as BStat, within each set of five specimens, from the same material direction and aging condition, shall not exceed a burn rate of 100 mm/minute. In addition, if the resulting data for any given set of five specimens contains less than three positive burn rates, and any of the observed burn rates within that set of specimens exceeds 75 mm/minute, an additional five specimens taken from the same material direction and aging condition shall be tested. The final result will then be based on the mean plus threefold the standard deviation of all observed measurable burn rates from the combined set of ten test specimens.

5.2.1.3 In computing both the mean value and the standard deviation, test specimens with no measurable burn rate are excluded from the calculation. This includes samples that fail to ignite (DNI), those that do not burn to the first gauge mark (SE), and those that do not burn more than 50 mm in less than 60 s from the point where timing was started (SENBR).

5.2.1.4 Computing the mean value and the standard deviation from the same material direction and aging condition is only applicable, if at least three test specimens exhibit a measurable burn rate (exclude DNI, SE, SENBR). Otherwise only the maximum burn rate Bmax, (calculated from formula in 5.1.1) shall be recorded as test result.

5.2.2 Routine Quality Control. Material described in 1.3 shall not burn, nor transmit a flame front across its surface, at a rate of more than 100 mm/minute, if no lower burn rate is specified in the relevant material specification.

5.2.2.1 Burn rates shall not exceed the BStat value for the as received condition and respective burn direction as determined from the initial approval sample (5.1.4) or 75 mm/minute if the respective BStat value is less than 75 mm/minute or if BStat could not be calculated from the initial approval sample.

5.3 Test Documentation. With reference to this test procedure the results of all measurements along with the maximum burn rate Bmax and the statistical burn rate BStat shall be presented in the attached test report (Appendix B).

6 Safety

This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to






establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

7 Notes

7.1 Glossary.

Burn Rate: The burn rate, expressed in mm/minute is the quotient of the burnt distance measured according to this test method, and the time taken to burn this distance.

Composite Material: A composite material is a material composed of more than one layer intimately held together at every point of contact by cementing, bonding, cladding, welding etc.

When layers are intermittently held together (e.g. by sewing, high frequency welding, riveting) they are not considered to be composite materials, and must be tested individually.

Exposed Side: The Exposed Side is the side which is facing towards the passenger compartment when the material is mounted in the vehicle as per the intended component design.

Lot: A lot is a batch, a jumbo roll or a quantity of material which has been produced from the same base compound material and is homogeneous in nature.

Passenger Compartment Air Space: The Passenger Compartment Air Space is the space within the passenger compartment that normally contains refreshable air.

7.2 Acronyms, Abbreviations, and Symbols.

CONTRAN Conselho Nacional de Trnsito (Brazil National Traffic Council)

DNI Does Not Ignite

SE Self Extinguishing

SEB Self Extinguishing with a Burn Rate

SENBR Self Extinguishing No Burn Rate

8 Coding System

This standard shall be referenced in other documents, drawings, etc., as follows:

Test to GMW3232. Must comply with FMVSS 302.

9 Release and Revisions

This standard was originated in May 1999. It was first approved by Global Material Engineering in December 2001. It was first published in December 2001.

Issue Publication

DateDescription (Organization)

1 DEC 2001 Initial publication.

2 AUG 2005 Section 3.2.4 Added word calibrated/Section 4.1.6 Reworded in a manner to identify their original orientation within the roll shown in Figure 1/Figure 1: Redrawn for clarification/Section 5.1 Added beyond the timing mark/Section 5.2.1 was (24 2) h./Section 5.3.1.2 Added and the material must comply with the requirements of paragraphs 6.1.1.2 and 6.1.1.2.1 of this specification./Section 5.3.3.1.1 Reworded an identifiable material orientation Added If the material does not display an identifiable direction, the samples should be tested randomly with respect to the direction of burn and a notation of this exception made on the test report./Section 6.1.1.2.1 Reworded value for the as received condition and respective burn direction as determined from the initial approval sample (6.1.2.4) or 75 mm/min if the respective Bstat value is less than 75mm/min or if Bstat could not be calculated from the initial approval sample./Figure 4: Removed sentence: Tolerance: 0.2 mm all dimensions (Global Material Engineering)

3 FEB 2007 Section 4.1.9: Added./Section 5.2.2: Text which do not meet ... 4.1.9.1 added. (Global Material Engineering)






4 AUG 2011 Section2.1 KMVSS Article 95 and GB8410 added. Section 3.2.1.1. Specific Korean Legal Requirements added. Section Deviations. Specific Korean Legal Requirements added.

Section 3.2.9 Specific Chinese Legal Requirements added. Section 3.3.2.1 Specific Chinese Legal Requirements added. Section 3.3.3.4 Specific Chinese Legal Requirements added. Section 5.1.5.6 Specific Chinese Legal Requirements added. Section Deviations, Specific Chinese Legal Requirements added.

A complete revision of format. (Textiles/Trim Materials GSSLT)






Appendix A: Recommended Test Equipment Construction

Figure A1: Front View and Side View of Test Cabinet General Tolerances to ISO 2768 m

The following note applies to Figure A1: Note 1: Burner

Figure A2: Bottom View of Test Cabinet

The following note applies to Figure A2: Note 1: 10 holes 19 mm Notes: Dimensions of housing: All overall dimensions inner dimensions Window: Glass to be 5.8 mm thick, heat-resistant Material: Cold rolled steel 0.9 mm thick except where otherwise noted






Figure A3: Test Cabinet Cover

Figure A4: U-frame Assembly with Typical Test Specimen

The following notes apply to Figure A4: Note 1: Top U-frame Note 2: Slot for thread Note 3: Timing zone Note 4: Thread guide Note 5: Wire Note 6: Bottom U-frame Note 7: Thread Note 8: Weight Note 9: Test specimen






Figure A5: Material Mounting Fixture (Top and Bottom U-Frame)

The following notes apply to Figure A5: Note 1: Slot (for thread clearance) Note 2: Wire guide for thread Note 3: 12 Slots each side (for wire supports)

Figure A6: Stand

Notes: Material: Aluminum






Appendix B: Test Report






Recommended Precautionary Measures for Performance of Flammability Tests to GMW3232

1. The U-shaped frames should always be cleaned prior to each burn test since residual oils; tars, carbon, etc., tend to form on the frame during each test.

2. Ensure that the support wires, if used, are straight and horizontal so as to prevent sagging of test specimens.

3. Ensure door always fits flush to the test cabinet (expansion effects can cause poor door fit leading to drafts).

4. Purge the smoke inside the test cabinet (for example using compressed air from a hand controlled nozzle) after each test.

5. Before each test ensure as far as possible that the temperature of the test cabinet has not increased excessively (spare cabinet covers and U-shaped frames, compressed air are useful optional items).

6. Lead flames (a flame that flashes forward of the main burning area) usually occur on vinyl coated fabrics and must be observed very carefully by the operator (Note: FMVSS 302 legislation defines lead flame.)

7. In performing duplicate tests, test specimens should always be cut from the same area of the material considering thickness, width, ribs, etc.

8. All ventilation holes must be regularly inspected and cleaned to ensure adequate air circulation in the cabinet.

9. Particular care must be taken in marking test specimens for identification purposes, since enamels, inks, etc., could affect test results.

10. Test specimens shall be carefully extinguished after removal from test cabinet, e.g., by dipping in water or storage in a metal vessel with a metal cover.






Deviations

Following paragraph shall only be applied at the Japanese market:

Dev 3.3.3.2 Specific Japanese Legal Requirements

Reason:

For the Japanese market applies a minimum acceptable sample size by legal requirements.

Following paragraph shall only be applied at the Brazilian market:

Dev 3.3.3.3 Specific Brazilian Legal Requirements (CONTRAN Resolution 675/86)

Reason:

For the Brazilian market applies a minimum acceptable sample size by legal requirements.

Following paragraph shall only be applied at the Korean market: Dev 3.2.1.1 Specific Korean Legal Requirements (KMVSS Article 95)

Reason:

For the Korean market applies a support wire for sub size sample only by legal requirements.

No consideration of material soften and bend during test by legal requirements. Test specimens will be taken from parts in vehicles for compliance test by Korean Government Institute.

Following paragraphs shall only be applied at the Chinese market:

Dev 3.2.9 Specific Chinese Legal Requirements (GB8410) Ventilating Cabinet

Dev 3.3.2.1 Specific Chinese Legal Requirements (GB8410)



Reason:

For the Chinese market applies a ventilating cabinet, sample preparation method when flat sample is not available, and minimum acceptable sample size for test by legal requirements. In addition, it is applies that reporting for the case of the sample is ignited in the flame in 15 seconds and the flame reaches the 1

st gauge

mark by legal requirement



gmw 3232-test method for determining the flammability of interior trim materials

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