AKROTEK®

PK-VM natural (4774)

PK

PK-VM natural (4774) is an unreinforced Polyketone with high flowability. The outstanding friction and wear properties enable the use for demanding components exposed to tribological stress. PK is characterized by its outstanding media resistance, which qualifies it to be used for components that are in contact with chemicals. The most important markets for AKROTEK® PK are the automotive and furniture industry and mechanical engineering.

Features

hydrolysis / chemically stabilised

Properties

Modulus

1.500MPa

Strength

60MPa

Impact

180kJ/m²

Mechanical Properties


Tensile modulus

ISO 527-2

1 mm/min | d.a.m.
1 mm/min | conditioned
1500 MPa
1500 MPa

Tensile stress at yield

ISO 527-2

50 mm/min | d.a.m.
50 mm/min | conditioned
60 MPa
60 MPa

Tensile strain at break

ISO 527-2

50 mm/min | d.a.m.
50 mm/min | conditioned
> 200 %
> 200 %

Flexural modulus

ISO 178

2 mm/min | d.a.m.
2 mm/min | conditioned
1900 MPa
1500 MPa

Flexural strength

ISO 178

2 mm/min | d.a.m.
2 mm/min | conditioned
70 MPa
70 MPa

Charpy impact strength

ISO 179-1/1eU

23°C | d.a.m.
23°C | conditioned
30°C | d.a.m.
-
no break
no break
no break

Charpy notched impact strength

ISO 179-1/1eA

23°C | d.a.m.
23°C | conditioned
30°C | d.a.m.
-
10 kJ/m²
10 kJ/m²
3,5 kJ/m²

Thermal Properties


Temperature of deflection under load HDT/A

ISO 75

1,8 MPa
100 °C

Temperature of deflection under load HDT/B

ISO 75

0,45 MPa
190 °C

Melting temperature

ISO 11357-3

DSC, 10K/min
220 °C

Coefficent of linear thermal expansion

ISO 11359-1/2

23°C to 80°C | parallel
23°C to 80°C | transverse
1,11 10⁻⁴/K
1,11 10⁻⁴/K

Thermal conductivity

DIN 52612

0,255 W/mK

Flammability


UL

Burning rate

UL 94

1,6 mm Wall thickness
HB Class

Burning rate (<100 mm/min)

FMVSS 302

> 1 mm Thickness
+

General properties


Density

ISO 1183

23°C
1,24 g/cm³

Humidity absorption

ISO 1110

70°C, 62% r.H.
0,8 - 0,9 %

Molding shrinkage

ISO 294-4

flow
transverse
1,7 - 1,9 %
1,9 - 2,1 %

Electrical Properties


Volume resistivity IEC

DIN EN 62631-3-2

d.a.m.
conditioned
1013 Ω x cm
1010 Ω x cm

Volume resistivity DIN

DIN EN 62631-3-2

d.a.m.
conditioned
1013 Ω x cm
1010 Ω x cm

Surface resistivity

DIN EN 62631-3-2

d.a.m.
conditioned
1013
1010

Comparative tracking index

IEC 60112

Test liquid A
600 V

Rheological Properties


MVR

ISO 1133

240°C/2,16kg
60 cm³/10 min

Disclaimer

All specifications and information given on this website are based on our current knowledge and experience. A legally binding promise of certain characteristics or suitability for a concrete individual case cannot be derived from this information. The information supplied here is not intended to release processors and users from the responsibility of carrying out their own tests and inspections in each concrete individual case. AKRO®, AKROMID®, AKROLEN®, AKROLOY®, AKROTEK®, ICX® and PRECITE® are registered trademarks of the Feddersen Group.