Group standard VW 50125
Issue 2017-12 Class. No.:55112
Descriptors:door pull, door handle, vehicle interior part, vehicle interior, clip, switch, trim panel, bezel, housing,
polyamide 6, PA6
Polyamide 6 for Finished Parts in the Vehicle Interior
Requirements on Materials
Previous issues
VW 50125: 2004-05
Changes
The following changes have been made to VW 50125: 2004-05:
–Material grades "PA6-14" and "PA6-15" added
–Section 3.1 "Basic requirements", Section 3.3 "Manufacture", and Section 3.5 "Conditioning"
revised
–Section 3.7 "Processing quality" and Section 3.8 "Melting temperature" added
–Section 4 "Requirements on materials": Requirements table divided into two tables (Table 1 and Table 2)
–Section 4 "Requirements on materials": Requirements for "Ball indentation hardness", "Viscos‐ity index of the polymer", "Impact strength", "Scratch resistance" removed and requirements for "Glass
bead content" "Yield stress", "Elongation at break" added
–"D" marking removed
–Section "Applicable documents" updated
–Technical responsibility updated
–Further technical and editorial changes
Always use the latest version of this standard.
This electronically generated standard is authentic and valid without signature.
The English translation is believed to be accurate. In case of discrepancies, the German version is alone authoritative and controlling.
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VW 50125: 2017-12
内饰Scope
This Volkswagen (VW) standard defines the material requirements for components made of polya‐mide 6 (PA6) with different levels of glass-fiber content or glass fiber and mineral blends, in the vehicle interior.
VW 50134 is used for PA6 applications outside of the vehicle interior.Designation奔驰csc
Example designation for the type reinforced with 10% glass fiber:
PA6-GF10 as per VW 50125 – PA6-3
or example designation for the type reinforced with 10% glass fiber and 20% mineral blend:
PA6-GF10-MD20 as per VW 50125 – PA6-12
Requirements Basic requirements
Approval of first supply and changes as per VW 01155.Emission behavior according to VW 50180.
Resistance to open-air weathering as per VW 50185.Colorimetric evaluation as per VW 50190
Avoidance of hazardous substances as per VW 91101.Flammability as per Technical Supply Specification TL 1010.
The tests must be carried out on specimens made from finished parts.
The number of components required for complete testing depends on the size of the component.The number of components to be supplied is determined in consultation with the appropriate de‐partments.
If it is not possible to perform tests on the component due to the geometry, reference can be made to
data sheets, or measurements can be carried out on test panels. It is also possible to omit these tests, following consultation with the appropriate Materials Engineering department.Properties
The surface and interior of the finished parts must be free of flaws and processing faults, such as flow lines, voids, and cracks. Sink marks at the base of ribs, stiffening elements, and bosses are not permitted.
Materials containing glass fibers must have a surface that is free of flaws both to the eye and to the touch. The distribution of glass fibers throughout the component must be sufficiently uniform so that three specimens taken from different points on a finished part do not differ in glass fiber con‐tent by more than 2.0%. Boundary samples must be agreed upon with the appropriate department.The parts must permit flawless assembly. There must not be any functional risks and/or risks of injury for assembly workers due to, e.g., burrs and/or residual foreign matter becoming loose.
1 2
3 3.1
3.2
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VW 50125: 2017-12
Manufacture
The materials are intended for injection molding.
If the PA6 is not modified for impact resistance, the use of homogeneous regrind from the first ma‐chining process is permissible up to a content of 30 weight percent. Components must be validated with the maximum regrind percentage to be expected.Marking as per German Association of the Automotive Industry standard VDA 260
See table 1 and table 2.Conditioning
08款君越A distinction is made between the "dry" and "conditioned" conditioning states.
Specimens from components in the "dry" state have been dried until a constant weight is reached (section 5.2) and continuously stored in a dry atmosphere before testing.
Specimens from components in the "conditioned" state are specimens in the "dry" state that are conditioned in a water-tight bag filled with water at 70 °C until the equilibrium state in table 1
and table 2 is achieved. Deviating from this procedure, specimens may also be conditioned as per DIN EN ISO 1110.Evaluation of the measurement results
The required numerical values apply to each individual measurement.Processing quality
See section 5.9.
The visual appearance of complete molded parts is evaluated after aging in a medium that pro‐motes environmental stress cracking. No through-thickness cracks or damage that could impair the function are permissible on the components.Melting temperature
See section 5.3.
The melting temperature must be > 215 °C.Requirements on materials
The requirements, depending on the filler, can be found in table 1 and table 2.
3.3 3.4
3.5
3.6
3.7
3.8
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VW 50125: 2017-12
T a b l e 1
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