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Elmet Technologies

Akro-Plastic Akroloy® PA GF 40 (2845) PA 6.6 & PA6I/6T Dry, 40% Glass Filled
Categories: Polymer; Thermoplastic; Nylon (Polyamide PA); Nylon 66 (PA66); Nylon 66, 40% Glass Fiber Filled

Material Notes: Polyamide (PA 6.6) absorbs moisture leading to increased toughness and elongation at break. There are also important diminished design properties, such as rigidity, strength and creep modulus. It is also clear that the water molecules diffused into the polymer require a certain space, so that the dimensional stability suffers, as well. Applications that up to now have been manufactured of die-cast metals, usually involve extremely high demands on synthetic materials, running contrary to the above mentioned disadvantages. Even high levels of reinforcement in standard polyamides on the basis of PA 6 or PA 6.6 with, for example, 50 % or 60 % glass fibers, still exhibit drastic changes in mechanical characteristics. By blending of PA 6.6 with a partially aromatic CoPA (PA 6I/6T), it is possible to significantly reduce the influence of moisture on the product characteristics. While the drop in rigidity and strength of PA 6.6 GF 50 in a standard climate is still at approx. 25%, a partially aromatic blend nevertheless exhibits a drop of less than 10%. Furthermore, it becomes apparent that the toughness remains virtually unaffected. As a result of these findings, the swelling behavior is improved, as well, which is favourable for dimensional stability. At the same time, this material mix also increases the glass transition temperature range. All in all, partly aromatic PA 6.6-Blends offer exactly the characteristics that are demanded by designers and users.

Processing:
AKROLOY® PA is based on a semi-crystalline PA 6.6 and an amorphous CoPA. This essentially determines the processing conditions. Accordingly, the melting point of AKROLOY® PA is at approx. 255 °C and is not influenced by the CoPA. With increasing temperatures, the amorphous contents provide a disproportionately low viscosity. The result is a very good reproduction of mould surfaces and a mass temperature that is up to 30 °C lower than required by comparable products. This results, aside from high quality surface finishes, frequently in reductions of cycle times, as well. Owing to production conditions, this must be verified in each individual case. Overall, AKROLOY® PA represents a step towards energy savings, in particular, when energy costs are compared to those in metal production and processing.

Due to increasing cost pressure in many industrial sectors, AKROLOY® PA will become a very interesting alternative material in the area of substitutes for metal diecasting. Aside from already mentioned advantages in the service life of the mould, the omission of post processing allows an average cost reduction of up to 50 % – and more. The following list comprises imaginable and suitable areas of application, grouped by segments.

Applications:

    Automotive Industry:
  • Ignition key switch housing
  • Door handle components
  • door lock components
  • Instrument panels (centre console)
  • Arm rests
  • Electric motor housings
  • Wiper components
  • Carriers for wood decor strips
  • Seat sliding mechanisms, etc.
    Sanitary Installation:
  • Single lever taps
  • Water filter housings
  • Housing for bath tap
  • Chrome-plated shower heads, levels, etc.
    Construction:
  • Window locks
  • Door lock components
  • Expanding nails for insulating plugs
  • Corner connectors for lighting systems
  • Shelving support elements, etc.
    Household:
  • Handles
  • Coffee maker components
  • Juice extractor components
  • Knives and handles
  • Bottle openers
  • Nutcrackers, etc.
    Electronic Industry:
  • Mobile phone housings
  • Plastic tongs
  • Housings for measuring units
  • Carrier plates, etc.
    Machine Building:
  • Plastic screws
  • Calipers
  • Screw clamps, etc.

Information from Akro-Plastic

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 1.48 g/cc
@Temperature 23.0 °C
0.0535 lb/in³
@Temperature 73.4 °F
ISO 1183
Filler Content 40 %40 %ISO 1172
Moisture Absorption 1.3 %
@Temperature 70.0 °C
1.3 %
@Temperature 158 °F
62% r.h., Humidity; ISO 62
Water Absorption at Saturation 4.0 - 4.5 %4.0 - 4.5 %ISO 62
Linear Mold Shrinkage, Flow <= 0.0010 cm/cm<= 0.0010 in/inISO 294-4
Linear Mold Shrinkage, Transverse 0.0060 cm/cm0.0060 in/inISO 294-4
Spiral Flow 664 cm261 inAkro
 
Mechanical PropertiesMetricEnglishComments
Ball Indentation Hardness 265 MPa38400 psiH 691/30; ISO 2039-1
Tensile Strength at Break 230 MPa33400 psi5 [mm/min]; ISO 527-1/2
 115 MPa
@Treatment Temp. 140 - 150 °C,
Time 1.80e+7 sec
16700 psi
@Treatment Temp. 284 - 302 °F,
Time 5000 hour
5 [mm/min], 50% Loss of Tensile Strength; ICE 216
 115 MPa
@Treatment Temp. 140 - 150 °C,
Time 7.20e+7 sec
16700 psi
@Treatment Temp. 284 - 302 °F,
Time 20000 hour
5 [mm/min], 50% Loss of Tensile Strength; ICE 216
Elongation at Break 3.0 %3.0 %5 [mm/min]; ISO 527-1/2
Tensile Modulus 13.0 GPa1890 ksi1[mm/min]; ISO 527-1/2
Flexural Strength 325 MPa47100 psi2 [mm/min]; ISO 178
Flexural Modulus 12.0 GPa1740 ksi2 [mm/min]; ISO 178
Charpy Impact Unnotched  8.00 J/cm²
@Temperature -30.0 °C
38.1 ft-lb/in²
@Temperature -22.0 °F
ISO 179/1eU
 9.50 J/cm²
@Temperature 23.0 °C
45.2 ft-lb/in²
@Temperature 73.4 °F
ISO 179/1eU
Charpy Impact, Notched  1.30 J/cm²
@Temperature -30.0 °C
6.19 ft-lb/in²
@Temperature -22.0 °F
ISO 179/1eA
 1.40 J/cm²
@Temperature 23.0 °C
6.66 ft-lb/in²
@Temperature 73.4 °F
ISO 179/1eA
 
Electrical PropertiesMetricEnglishComments
Comparative Tracking Index 600 V600 VTest Solution A; IEC 60112
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 15.0 µm/m-°C
@Temperature 23.0 - 80.0 °C
8.33 µin/in-°F
@Temperature 73.4 - 176 °F
ISO 11359-1/2
CTE, linear, Transverse to Flow 70.0 µm/m-°C
@Temperature 23.0 - 80.0 °C
38.9 µin/in-°F
@Temperature 73.4 - 176 °F
ISO 11359-1/2
Melting Point 255 °C491 °FISO 11357-1, DSC,10 [K/min]
Deflection Temperature at 0.46 MPa (66 psi) 245 °C473 °FHDT/B; ISO 75-1/2
Deflection Temperature at 1.8 MPa (264 psi) 220 °C428 °FHDT/A; ISO 75-1/2
Flammability, UL94 HB
@Thickness 0.800 mm
HB
@Thickness 0.0315 in
 
Processing PropertiesMetricEnglishComments
Feed Temperature 80.0 °C176 °F
Nozzle Temperature 290 - 310 °C554 - 590 °F
Zone 1 275 - 305 °C527 - 581 °F
Zone 2 275 - 305 °C527 - 581 °F
Zone 3 275 - 305 °C527 - 581 °F
Zone 4 275 - 305 °C527 - 581 °F
Melt Temperature 290 - 310 °C554 - 590 °F
Mold Temperature 80.0 - 120 °C176 - 248 °F
Drying Temperature 80.0 °C176 °F
Dry Time 4 - 8 hour4 - 8 hour
Injection Pressure 100 MPa14500 psi
Hold Pressure 30.0 - 80.0 MPa4350 - 11600 psi
Back Pressure 0.500 - 1.50 MPa72.5 - 218 psi
 
Descriptive Properties
Rate acc. FMVSS 302 (<100/min)Passed
Rate acc. FMVSS 302,(<100/min)FMVSS 302, >1 [mm] Thickness

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PAKRO073 / 126853

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