PA6/6T: Polyamide 6/6T

Short Name
Polyamide 6/6T
HTRTP - High-Temperature Resistant Thermoplastics
General Properties
Chemical Formula
Structural Formula


Glass Transition Temperature
60 to 100 °C
Melting Temperature
250 to 300 °C
Melting Enthalpy
- J/g
Decomposition Temperature
460 to 480 °C
Young's Modulus
3500 to 3600 MPa
Coefficient of Linear Thermal Expansion
70 *10¯6/K
Specific Heat Capacity
- J/(g*K)
Thermal Conductivity
- W/(m*K)
1.18 g/cm³
Semi-crystalline thermoplastic
General properties
High mechanical stability. High chemical resistance. High toughness in the cold. Higher temperature resistance than PA6 or PA6.6
Injection molding
Electrical engineering/electronics (gear wheels, plug connectors…). Axes. Fishing equipment

Internet Links

NETZSCH Measurements

DSC 204 F1 Phoenix®
Sample Mass
12.29 mg
Isothermal Phase
5 min
Heating/Colling Rates
10 K/min
Al, pierced
N2 (50 ml/min)


The large relaxation peak overlapping the glass transition (midpoint: 61°C) in the 1st heating (blue) indicates that this polymer sample had been tempered at 40/50°C or had been stored in that temperature range for a long period of time.
Due to the elimination of water (broad peak from approx. 90°C to 180°C) during the 1st heating, the glass transition shifted to 101°C (midpoint) in the 2nd heating (green).
In the 2nd heating (green), the sample melting began after a small exothermal post-crystallization (peak: 141°C) following the glass transition; the temperature of the main peak was 299°C. The corresponding melting enthalpy amounted to 40 J/g.
In the first heating, the total melting enthalpy was 29 J/g and thus a bit lower than in the 2nd heating, indicating that additional crystallization had occurred during the intervening cooling segment. Nevertheless, the melting temperature (peak temperature) of 298°C was similar to that in the 2nd heating.

Back to List