PA46
Polyamide 46
Glass Transition (Tg)
~78 °C
Melting Point (Tm)
290–295 °C
Density
1.18 g/cm³
CAS Number
50327-77-0
Recycling Code
♺ 7
Category
High-Performance
Repeat Unit
–[NH–(CH₂)₄–NH–CO–(CH₂)₄–CO]ₙ–
The repeating unit is the smallest structural fragment whose repetition builds the whole chain. Subscripts show the relative share of each unit in copolymers.
Key Properties
Highest amide density of aliphatic polyamides; exceptional crystallinity, stiffness retention above Tg and rapid crystallisation.
Applications
Gears, engine timing components, electrical connectors for SMT reflow.