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PPA

PPA (polyphthalamides) are among the high-performance polyamides and are particularly impressive due to their very high stiffness and strength, even at elevated temperatures and after water absorption. They are particularly suitable as metal substitutes.

Trade name: Grivory

Only show products for which all selected properties have been measured

Physical properties
Density in kg/m³
min
max
Humidity absorption 23°C/50% r.h. in %.
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max
Water absorption in %
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max
Mechanical properties
Compression set at 23°C in %.
min
max
Compression set at 70°C in %.
min
max
Tensile modulus in MPa
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max
Notched impact strength (Charpy) at -30°C in kJ/m²
min
max
Notched impact strength (Charpy) at 23°C in kJ/m²
min
max
Impact strength (Charpy) at -30°C in kJ/m²
min
max
Impact strength (Charpy) at 23°C in kJ/m²
min
max
Shore A hardness
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max
Shore D hardness
min
max
Stress at 10% elongation in MPa
min
max
Stress at 100% elongation in MPa
min
max
Stress at 300% elongation in MPa
min
max
Strain at break in %
min
max
Stress at 50% elongation in MPa
min
max
Stress at break in MPa
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max
Strain at yield in %
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max
Compressive strength in MPa
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max
Stress at yield in MPa
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max
Compression set at 100°C in %
min
max
Tear strength in kN/m
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max
Rheological properties
Melt flow rate MFR in g/10min
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max
Melt flow rate MFR (test condition)
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max
Molding shrinkage in flow direction in %
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max
Molding shrinkage transverse to the flow direction in %
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max
Thermal properties
Maximum service temperature short term in °C
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max
Melting temperature (DSC, 10°C/min) in °C
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max
Yellow Card available
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max
Vicat softening temperature (50°C/h 50N) in °C
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max
Coeff. of linear therm. expansion in flow direction in E-6/K
min
max
Coeff. of linear therm. expansion transverse to the flow direction in E-6/K
min
max
Temp. of deflection under load, 0.45 MPa in °C
min
max
Temp. of deflection under load, 1.80 MPa in °C
min
max
Thermal conductivity in plane in W/mK
min
max
Thermal conductivity through plane in W/mK
min
max
Burning behavior at thickness 0.4 mm
Burning behavior at thickness 0.8 mm
Burning behavior at thickness 1.6 mm
Burning behavior at thickness 3.2 mm
Maximum service temperature long term in °C
min
max
Glass transition temperature in °C
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max
Electrical properties
Volume resistivity in Ohm*m
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max
Electric strength in kV/mm
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max
Comparative tracking index (CTI) in V
min
max
Surface resistivity in ohm
min
max
Magnetic properties
Coercivity (jHc) in kA/m
min
max
max. energy product (BH max) in kJ/m³
min
max
Remanence (Br) in mT
min
max
Product name
ISO
KEBAFORM C 25.0 >
ISO
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