Durethan® BKV20FN20

20% Glass Reinforced, Injection Molding, Flame Retardant (halogen free), Heat Stabilized

General Information

Durethan® is the trade name for our range of engineering thermoplastics based on polyamide 6 and polyamide 66. These polyamides are partially crystalline thermoplastics which offer an ideal combination of properties, especially for technical applications. They provide high mechanical strength and stiffness, good dielectric properties, high resistance to both heat and chemical attack, and good friction and wear properties.
Special features
Regulatory Affairs
Processing technology
Injection Molding

Rheological properties

Molding shrinkage (parallel)
0.6
%
Molding shrinkage (normal)
0.7
%

Mechanical properties

Tensile modulus
6100
MPa
Tensile modulus (-40°C)
7110
MPa
Tensile modulus (40°C)
5710
MPa
Tensile modulus (100°C)
2310
MPa
Tensile modulus (120°C)
2050
MPa
Tensile modulus (140°C)
1840
MPa
Tensile modulus (160°C)
1710
MPa
Tensile modulus (180°C)
1600
MPa
Tensile modulus (200°C)
1420
MPa
Stress at break
100
MPa
Strain at break
3
%
Flexural modulus
6100
MPa
Flexural strength
170
MPa
Charpy impact strength (+23°C)
35
kJ/m²
Charpy impact strength (-30°C)
30
kJ/m²
Charpy notched impact strength (+23°C)
<10
kJ/m²
Charpy notched impact strength (-30°C)
<10
kJ/m²
Izod notched impact strength (+23°C)
<10
kJ/m²

Thermal properties

Melting temperature (10°C/min)
222
°C
Temp. of deflection under load (1.80 MPa)
185
°C
Temp. of deflection under load (0.45 MPa)
215
°C
Coeff. of linear therm. expansion (parallel)
0.4
E-4/°C
Coeff. of linear therm. expansion (normal)
0.9
E-4/°C
Burning Behav. at 0.75 mm nom. thickn.
V-2
class
Thickness tested
0.75
mm
Burning Behav. at 1.5 mm nom. thickn.
V-2
class
Thickness tested
1.5
mm
UL recognition
Yes
-
Burning Behav. at 3.0 mm nom. thickn.
V-2
class
Thickness tested
3
mm
UL recognition
Yes
-
Oxygen index
26.9
%
Ball pressure temperature
212
°C
Glow Wire Flammability Index GWFI
960
°C
GWFI (Thickness (1) tested)
0.75
mm
Glow Wire Flammability Index GWFI
960
°C
GWFI (Thickness (2) tested)
1.5
mm
Glow Wire Ignition Temperature GWIT
775
°C
GWIT (Thickness (1) tested)
0.75
mm
Glow Wire Ignition Temperature GWIT
775
°C
GWIT (Thickness (2) tested)
1.5
mm
Relative Temperature Index - electrical
150
°C
RTI electrical (Thickness (1) tested)
0.75
mm
Relative Temperature Index - with impact
115
°C
RTI with impact (Thickness (1) tested)
0.75
mm
Relative Temperature Index - without impact
130
°C
RTI without impact (Thickness (1) tested)
0.75
mm

Electrical properties

Volume resistivity
>1E13
Ohm*m
Electric strength
32
kV/mm
Comparative tracking index
500
V

Other properties

Water absorption
7
%
Humidity absorption
2.1
%
Density
1310
kg/m³

Material specific properties

Drying temperature dry air dryer
80
°C
Drying time dry air dryer
2-6
h
Residual moisture content
0.03-0.07
%
Melt temperature (Tmin - Tmax)
250-270
°C
Mold temperature
80-100
°C

Diagrams