Durethan® BKV20FN27

20% Glass Beads 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)
0.6
%

Mechanical properties

Tensile modulus
5100
MPa
Stress at break
80
MPa
Strain at break
3.5
%
Flexural modulus
5000
MPa
Flexural strength
140
MPa
Charpy impact strength (+23°C)
30
kJ/m²
Charpy notched impact strength (+23°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)
160
°C
Coeff. of linear therm. expansion (parallel)
0.5
E-4/°C
Coeff. of linear therm. expansion (normal)
0.8
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
Ball pressure temperature
173
°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
700
°C
GWIT (Thickness (1) tested)
0.75
mm
Glow Wire Ignition Temperature GWIT
700
°C
GWIT (Thickness (2) tested)
1.5
mm

Electrical properties

Comparative tracking index
525
V

Other properties

Water absorption
7.3
%
Humidity absorption
2.2
%
Density
1300
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