VW 50134 英文

VOLKSWAGEN
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 PA6-1-A PA6-2-A PA6-3-A PA6-4-A PA6-5-A No. Property Unit Requirement
1 Material PA6 PA6 PA6-GF15 PA6-GF10-MD20PA6-GF20-MD25
2 Stabilization/modification Heat –stabilized Modified to
resist impacts,
heat-stabilized
Heat –stabilized Heat –stabilized Heat –stabilized
3 Marking
As per VDA 260 > PA6 < > PA6 < > PA6-GF15< > PA6-
(GF10+MD20) <
> PA6-
(GF20+MD25) <
4 Glass fiber content
e.g., as per DIN EN ISO 1172 Weight % 0 0 15 ± 2 10
± 2 20
± 2
5 Mineral
content
e.g., as per DIN EN ISO 1172 Weight % 0 0 0 20 ± 3 25
± 3
6 Density
as per DIN EN ISO1183-1 g/cm31,13 ± 0,02 1,1
± 0,02 1,23
± 0,02 1,36
± 0,03 1,52
± 0,03
7 Moisture content in equilibrium
state in standard climate as
per ISO 554-23/50 Weight % 3 ± 0,5 2,5
± 0,5 2,6
± 0,5 2,0
± 0,5 1,4
± 0,5
8 Notched impact strength as per DIN EN ISO 179-1/-eA and Section 7.6
8.1 Dry kj/m2≥ 3,5 ≥ 16 ≥ 5 ≥ 2,6 ≥ 4
8.2 Conditioned kj/m2≥ 20 ≥ 40 ≥ 10 ≥ 9,4 ≥ 5
9 Yield stress as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7
9.1 Dry
see Section 3.4
Mpa ≥ 70 ≥ 55
9.2 Conditioned
see Section3.4
Mpa ≥ 40 ≥ 25
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
Mpa ≥ 80 ≥ 107 ≥ 120
10.2 Conditioned
see Section3.4
Mpa ≥ 50 ≥ 62 ≥ 70
11 Elongation at break as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7
11.1 Dry
see Section3.4
% ≥ 10 ≥ 25 ≥ 2,5 ≥ 2 ≥ 2,0
11.2 Conditioned
see Section3.4
% ≥ 20 ≥ 50 ≥ 10 ≥ 5 ≥ 5
Table 2
Grade PA6-6-A PA6-7-A PA6-8-A PA6-9-A PA6-10-A No. Property Unit Requirement
1 Material PA6-GF25 PA6-GF30 PA6-GF35 PA6-GF40 PA6-GF50
2 Stabilization/modification Heat-stabilized
Heat-stabilized Heat-stabilized Heat-stabilized Heat-stabilized 3 Marking
As per VDA 260
> PA6-GF25 < > PA6-GF30 < > PA6-GF35 < > PA6-GF40 < > PA6-GF50 <
4 Glass fiber content
e.g., as per DIN EN ISO 1172 Weight % 25 ± 2 30
± 2 35
± 3 40
± 3 50
± 3
5 Mineral
content
e.g., as per DIN EN ISO 1172
Weight % 0 0 0 0 0
6 Density
as per DIN EN ISO1183-1 g/cm31,32 ± 0,03 1,37
± 0,03 1,41
± 0,03 1,45
± 0,03 1,56
± 0,03
7 Moisture content in equilibrium
state in standard climate as
per ISO 554-23/50 Weight % 2,1 ± 0,5 2,0
± 0,5 1,9
± 0,5 1,5
± 0,5 1,5
± 0,5
8 Notched impact strength as per DIN EN ISO 179-1/-eA and Section 7.6
8.1 Dry kj/m2≥ 8 ≥ 10 ≥ 12 ≥ 13 ≥ 16
8.2 Conditioned kj/m2≥ 12 ≥ 20 ≥ 20 ≥ 20 ≥ 17
9 Yield stress as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7
9.1 Dry
see Section 3.4
Mpa
9.2 Conditioned
see Section3.4
Mpa
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
Mpa ≥ 130 ≥ 140 ≥ 150 ≥ 160 ≥ 205
10.2 Conditioned
see Section3.4
Mpa ≥ 80 ≥ 90 ≥ 100 ≥ 110 ≥ 137 11 Elongation at break as per DIN EN ISO 527-1 and DIN EN ISO527-2 and Section 7.7
11.1 Dry
see Section3.4
% ≥ 2,5 ≥ 2,5 ≥ 2,5 ≥ 2,5 ≥ 2,5
11.2 Conditioned
see Section3.4
% ≥ 5 ≥ 6 ≥ 6 ≥ 4 ≥ 4,5
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
as per Technical Supply
Specifications TL 52185 or as per
drawing Specification
See Section 7.10 No embrittlement , no change in shape or surface that affects the functionality negatively
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 )
% ≤50 1.2 Change in weight % <2
2 Properties
after heat aging at 150°C for 1000 h
see Section 7.9 No embrittlement, no change in shape or surface that affects the functionality negatively
2.1 Change (as a percentage) in
mechanical properties in comparison
to as-received condition(dry yield
stress ,dry elongation at break ,dry
notched impact strength)
% ≤50
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 Unit Requirement
1 Behavior when exposed to blow by
gas constituents after 2 cycle as per
Test Specifications PV 3936 No embrittlement , no change in shape or surface that affects the functionality negatively
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 )
% ≤50
2 Properties after heat aging at 150°C
for 1000 h or as per drawing
Specification
see Section 7.9 No embrittlement, no change in shape or surface that affects the functionality negatively
2.1 Change (as a percentage) in
mechanical properties in comparison
to as-received condition(dry yield
% ≤50
stress ,dry elongation at break ,dry
notched impact strength)
Table 5-Fan wheel
NO. Property Unit Requirement
1 Properties after heat aging at 150°C
for 1000 h
see Section 7.9 No embrittlement , no change in shape or surface that affects the functionality negatively
1.1 Change(as a percentage) in
mechanical properties in comparison
to as-received condition (dry yield
stress ,dry elongation at break ,dry
notched impact strength)
% ≤30
2 Weld line strength, deviation(as a
percentage)from homogeneous areas
in terms of mechanical properties
see Section 7.8
% <5
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 Polymer Materials; Testing the Resistance to Components of Blowby
Gases
TL 52185 Reference Engine Oil SAE5W-60 for Testing of compatibility with Respect
to Elastomer Materials; Lubricant Requirements
VW 01155 Vehicle Supply Parts; Approval of First Supply and Changes
VW 91101 Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating
Fluids; Avoidance of Hazardous Substances
DIN 53497 Testing of Plastic; Hot Storage Test on Mouldings Made of Thermoplastic
Moulding Materials without External Mechanical Stressing
DIN EN ISO1110 Plastics-Polyamides -Accelerated conditioning of test specimens
DIN EN ISO11357-1 Plastics-Differential scanning calorimetry (DSC) - Part 1: General
principles
DIN EN ISO 1172 Textile-Glass-Reinforced Plastics – Prepregs, Moulding Compounds and
Laminates – Determination of the Textile-Glass and Mineral-Filler Content;
Calcination Methods
DIN EN ISO 1183-1 Plastics – Methods for Determining the Density of Non-Cellular Plastics
–Part 1: Immersion Method, Liquid pyknometer Method and Titration
Method
DIN EN ISO 179-1 Plastics – Determination of Charpy Impact Properties, Part 1:
Non-Instrumented Impact Test
DIN EN ISO 527-1 Plastics – Determination of tensile properties – Part 1: General principles DIN EN ISO 527-2 Plastics – Determination of tensile properties – Part 2: Test conditions for
moulding and extrusion plastics
ISO 554 Standard atmosphere for conditioning and/or testing; Specifications
VDA 260 Components of motor vehicle; marking of material。