VW 50134 英文

Group Standard VW 50134 Issue 2011-05

Class No.: 55121

Descriptors: PA6, polyamide 6, glass fiber-reinforced, mineral-reinforced, engine compartment, chassis, body

PA6 for Finished Parts Outside the Vehicle Interior

Material Requirements

1 Scope

This Standard defines the material requirements for glass fiber-reinforced and/or mineral-reinforced PA6 in the engine, chassis, gearbox, and body areas (without paint).

2 Description

The description consists of the following elements:

PA6 as per VW50134 + >grade< + >area of appliance<

If none of the area of application in Section 6 apply, only the grade is specified.

Example for a part made of polyamide 6 with 30% glass fiber for use as an intake manifold:

PA6 as per VW50134—PA6-6-A—intake

3 Requirements 3.1 General requirement

Approval of first supply and changes an per Volkswagen Standard VW 01155. Avoidance of hazardous substances as per VW 9110.

The test must be carried out on finished part specimens. Depending on the geometry, at least 5 parts are required for complete testing. If, due to the geometry, the tests cannot be performed on the component, data sheets or measurements performed on the test panels may be referenced.

3.2 Appearance

The finished parts must be free of flaws and processing defects (voids, cracks, joining seams, etc.) on the surface and in the loaded and functionally relevant area. If voids or other processing defects are present in loaded and functionally relevant areas, the supplier must demonstrate their dimensional stability under all critical load condition. Maximum deviation samples must be coordinated with the appropriate department.

The parts must enable proper installation. There must not be any functional risk s and/or risks or of injury for assembly workers due to burrs and/or residual foreign matter becoming loose.

3.3 Manufacturing method

The materials are intended for injection molding and blow molding processes.

3.4 Conditioning

A distinction is made between the “dry” and “conditioned” conditioning states.

Specimens from components in the “dry” states have been dried until their weigh remains constant (see Section7.2) and stored in a dry atmosphere without interruption before testing.

Specimens from components in the “conditioned” states are specimens in the “dry” states that are aged in a water-tight bag filled with water at 70°C until the equilibrium state in Table 1 and Table 2 is reached. Deviating from this procedure, specimens may also undergo accelerated conditioning as per DIN EN ISO 1110.

3.5 Evaluating the measurement results

The required numerical values apply to each individual measurement.

4 Material requirements

Special material requirements (e.g., light fastness, flammability, emissions) must be obtained from the drawing.

4.1 Processing quality

See Section7.1.

There must not be any cracks, or damage that puts the functionality at risk, on the components.

4.2 Moisture content

See Section7.2.

It must be ensured that the parts are delivered to the plants that will be using them with a minimum moisture content of >0,7 weight percent H2O.

4.3 Melting temperature

See Section7.3.

The melting temperature must be higher than 215°C.

4.4 Elevated-temperature behavior

The parts must not exhibit any change in shape or surface after undergoing heat aging and being cooled down subsequently; see Section 7.4. The dimensional change in length and width must not exceed 0,5%.

4.5 Low-temperature behavior

The finished parts must be fully functional at low temperature; see Section7.5. They must remain free of cracks and other damage after being subsequently heated up to room temperature.

5 Material requirements

The required properties as a function of the filler must be obtained from Table 1 and Table 2.

Table 1

Grade No. Property 1 Material 2

Stabilization/modification

Unit

PA6 Heat –stabilized

PA6 Modified to

resist impacts, heat-stabilized > PA6 <

0 0

PA6-1-A

PA6-2-A PA6-3-A PA6-4-A PA6-5-A Requirement

PA6-GF15 PA6-GF10-MD20Heat –stabilized

Heat –stabilized

PA6-GF20-MD25 Heat –stabilized

3 Marking

As per VDA 260 4

Glass fiber content

e.g., as per DIN EN ISO 1172

Weight % Weight % g/cm3

> PA6 <

0 0

> PA6-GF15<

> PA6- (GF10+MD20) <> PA6-

(GF20+MD25) <

15 ± 2 10 ± 2 20 ± 2 0

20 ± 3 25 ± 3

5 Mineral content

e.g., as per DIN EN ISO 1172 6 Density

as per DIN EN ISO1183-1 7

1,13 ± 0,02 1,1 ± 0,02 1,23 ± 0,02 1,36 ± 0,03 1,52 ± 0,03 3 ± 0,5 2,5 ± 0,5 2,6 ± 0,5 2,0 ± 0,5 1,4 ± 0,5

Moisture content in equilibrium Weight %

state in standard climate as per ISO 5-23/50

kj/m2 kj/m2 Mpa

8 Notched impact strength as per DIN EN ISO 179-1/-eA and Section 7.6

≥ 3,5 ≥ 20 ≥ 70

≥ 16 ≥ 40 ≥ 55

≥ 5 ≥ 10

≥ 2,6 ≥ 9,4

≥ 4 ≥ 5

8.1 Dry 8.2 Conditioned 9

9.1 Dry

see Section 3.4

Yield stress as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7

Grade No. Property Unit

PA6-1-A PA6-2-A PA6-3-A PA6-4-A PA6-5-A Requirement

9.2 Conditioned Mpa ≥ 40 ≥ 25

see Section3.4

10 Breaking stress as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7 10.1 Dry see Section3.4 10.2 Conditioned see Section3.4 11

Mpa ≥ 80 Mpa ≥ 50

≥ 107 ≥ 62

≥ 120 ≥ 70

Elongation at break as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7

% %

≥ 10 ≥ 20

≥ 25 ≥ 50

≥ 2,5 ≥ 10

≥ 2 ≥ 5

≥ 2,0 ≥ 5

11.1 Dry see Section3.4 11.2 Conditioned see Section3.4

Table 2

Grade No. Property 1 Material 3 Marking

As per VDA 260 4

Glass fiber content

e.g., as per DIN EN ISO 1172

Unit

Weight % Weight %

PA6-6-A

PA6-7-A PA6-8-A Requirement

PA6-GF25 PA6-GF30 PA6-GF35 > PA6-GF25 <

> PA6-GF30 <

> PA6-GF35 <

PA6-GF40 > PA6-GF40 <

PA6-GF50 > PA6-GF50 <

Heat-stabilized Heat-stabilized Heat-stabilized Heat-stabilized Heat-stabilized PA6-9-A

PA6-10-A

2 Stabilization/modification

25 ± 2 30 ± 2 35 ± 3 40 ± 3 50 ± 3 0

0

0

0

0

5 Mineral content

e.g., as per DIN EN ISO 1172

Grade No. Property 6 Density

as per DIN EN ISO1183-1 7

Unit g/cm3

PA6-1-A PA6-2-A PA6-3-A PA6-4-A PA6-5-A Requirement

1,32 ± 0,03 1,37 ± 0,03 1,41 ± 0,03 1,45 ± 0,03 1,56 ± 0,03 2,1 ± 0,5 2,0 ± 0,5 1,9 ± 0,5 1,5 ± 0,5 1,5 ± 0,5

Moisture content in equilibrium Weight %

state in standard climate as per ISO 5-23/50

kj/m2 kj/m2

8 Notched impact strength as per DIN EN ISO 179-1/-eA and Section 7.6

≥ 8 ≥ 12

≥ 10 ≥ 20

≥ 12 ≥ 20

≥ 13 ≥ 20

≥ 16 ≥ 17

8.1 Dry 8.2 Conditioned 9

9.1 Dry

see Section 3.4

Yield stress as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7

Mpa 9.2 Conditioned Mpa see Section3.4

10 Breaking stress as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7 10.1 Dry see Section3.4 10.2 Conditioned see Section3.4 11

Mpa Mpa

≥ 130 ≥ 80

≥ 140 ≥ 90

≥ 150 ≥ 100

≥ 160 ≥ 110

≥ 205 ≥ 137

Elongation at break as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7

% %

≥ 2,5 ≥ 5

≥ 2,5 ≥ 6

≥ 2,5 ≥ 6

≥ 2,5 ≥ 4

≥ 2,5 ≥ 4,5

11.1 Dry see Section3.4 11.2 Conditioned see Section3.4

6 Requirement dependent on the place of use

For some places of use ,additional requirements must be met; see Table 3 to Table 5.

Table 3-Oil

NO. Property Unit Requirement 1 Behavior in test oil No embrittlement , no change in

as per Technical Supply shape or surface that affects the Specifications TL 52185 or as per functionality negatively drawing Specification See Section 7.10

1.1 Change(as a percentage) in % ≤50

mechanical properties in comparison to as-received condition (conditioned yield stress ,conditioned elongation at break ,conditioned notched impact strength )

1.2 Change in weight % <2 2 Properties No embrittlement, no change in

after heat aging at 150°C for 1000 h shape or surface that affects the see Section 7.9 functionality negatively

2.1 Change (as a percentage) in % ≤50

mechanical properties in comparison to as-received condition(dry yield stress ,dry elongation at break ,dry notched impact strength) Normally, heat aging must be performed at 150 °C for the intake area of application .A different temperature may be required as per a pertinent drawing entry (see Table 4)

Table 4-Intake

NO. Property Unit1 Behavior when exposed to blow by

gas constituents after 2 cycle as per Test Specifications PV 3936

1.1 Change(as a percentage) in %

mechanical properties in comparison to as-received condition (conditioned yield stress ,conditioned elongation at break ,conditioned notched impact strength )

2 Properties after heat aging at 150°C

for 1000 h or as per drawing Specification see Section 7.9

2.1 Change (as a percentage) in %

mechanical properties in comparison to as-received condition(dry yield Requirement No embrittlement , no change in shape or surface that affects the functionality negatively ≤50

No embrittlement, no change in shape or surface that affects the functionality negatively ≤50

stress ,dry elongation at break ,dry notched impact strength)

Table 5-Fan wheel

NO. Property UnitRequirement 1 Properties after heat aging at 150°C No embrittlement , no change in

for 1000 h shape or surface that affects the see Section 7.9 functionality negatively

1.1 Change(as a percentage) in % ≤30

mechanical properties in comparison to as-received condition (dry yield stress ,dry elongation at break ,dry notched impact strength)

2 Weld line strength, deviation(as a % <5 percentage)from homogeneous areas in terms of mechanical properties see Section 7.8

7 Notes on testing 7.1 Processing quality

At least 3 whole finished parts are aged in a stress-relieving medium [e.g., 35% ZnCl2 solution(soldering fluid)] for 48h at room temperature .After being aged in the medium ,the specimens must be rinsed with tap water and then dried for 24 h at 70 °C. They are then evaluated.

7.2 Moisture content

The moisture content is determined by drying the specimen in the (vacuum) oven. At least 3

specimens must be taken from 3 parts; these specimens are weighed with an accuracy of 0.01g and are then dried at 80°C until a constant weight is obtained. The specimens must be cooled down to (23±2) °C—which is necessary for the second weighing procedure —in a desiccator. The moisture content may also be determined with commercial moisture meters.

7.3 Melting temperature

The melting temperature must be determined by means of DSC(different scanning calorimetry ) as per DIN EN ISO 11357-1.

7.4 Elevated-temperature behavior

Heat-aging test as per DIN 53497, method B, to be performed on at least one complete finished part. The aging time is (22±2) h, the aging temperature is (150±5) °C unless otherwise specified in the drawing or release.

7.5 Low-temperature behavior

At least 2 finished parts that have been conditioned in a standard climate must be aged at (-40±1) °C for (22±2) h.

7.6 Notched impact strength

The notched bar impact bending test (impact on narrow side) as per DIN EN ISO 179-1/1eA must be

performed. If it is not possible to prepare a specimen with the correct size from the component, a specimen with the following specifications may be used instead: length: (50±1) mm, width: (10±0.2) mm, thickness according to products thickness (up to a max. of 4mm); distance between supports (support width):40 mm, test apparatus : pendulum impact tester 4J.

7.7 Tensile test

The yield stress and the elongation at break must be determined with a tensile test as per DIN EN ISO527-1 and DIN EN ISO527-2, specimen 5A; test rate: 50 mm/min.

7.8 Weld line strength

Specimen are taken from the component’s weld line area and tested with a tensile test (Section 7.7) and notched bar impact (Section 7.6). The weld line must be perpendicular to the force/impact.

7.9 Heat aging

For heat aging, 1 complete finished part and specimens (at least 3 each for the subsequent tensile test and notched bar impact test) must be aged in a forced air oven at the required temperature for 1000 h as per DIN 53497. After being aged, the specimens must be stored in a desiccator unless they are subjected to the mechanical tests immediately afterwards.

7.10 Oil immersion aging

Before the oil immersion aging process starts, the specimen (at least 3 each for the subsequent tensile test and notched bar impact test) must be weighed with an accuracy of 0,01g. These specimens must then be aged in the defined oil at 130°C for 504h. A second set of specimens must be aged in the corresponding oil for 96h at 150°C. After being removed from the oil, the specimens must be dried with a cloth, weighed again, and then subjected to the mechanical tests.

8 Other applicable documents

The following documents cited in this Standard are necessary to its application.

Some of the cited documents are translations from the German original. The translation of German term in such document may differ from those used in this Standard, resulting in terminological inconsistency.

Standards whose titles are given in German may be available only in German. Editions in other language may be available from the institute issuing the standard. PV 3936 TL 52185 VW 01155 VW 91101 DIN 53497

DIN EN ISO1110 DIN EN ISO11357-1

Polymer Materials; Testing the Resistance to Components of Blowby Gases

Reference Engine Oil SAE5W-60 for Testing of compatibility with Respect to Elastomer Materials; Lubricant Requirements

Vehicle Supply Parts; Approval of First Supply and Changes

Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating Fluids; Avoidance of Hazardous Substances

Testing of Plastic; Hot Storage Test on Mouldings Made of Thermoplastic Moulding Materials without External Mechanical Stressing

Plastics-Polyamides -Accelerated conditioning of test specimens Plastics-Differential scanning calorimetry (DSC) - Part 1: General principles

DIN EN ISO 1172

DIN EN ISO 1183-1

DIN EN ISO 179-1 DIN EN ISO 527-1 DIN EN ISO 527-2 ISO 5 VDA 260

Textile-Glass-Reinforced Plastics – Prepregs, Moulding Compounds and Laminates – Determination of the Textile-Glass and Mineral-Filler Content; Calcination Methods

Plastics – Methods for Determining the Density of Non-Cellular Plastics –Part 1: Immersion Method, Liquid pyknometer Method and Titration Method

Plastics – Determination of Charpy Impact Properties, Part 1: Non-Instrumented Impact Test

Plastics – Determination of tensile properties – Part 1: General principles Plastics – Determination of tensile properties – Part 2: Test conditions for moulding and extrusion plastics

Standard atmosphere for conditioning and/or testing; Specifications Components of motor vehicle; marking of material