PA 6
Polyamide 6 is one of the most common engineering materials, and is available in several different variants. Its primary properties are:
● Semi-crystalline structure
● Good workability
● High impact resistance
● Good mechanical properties up to 120–140°C
● Good chemical resistance to strong acids and alkalines
● High moisture absorption
● Glass-transition temperature of 50°C
● Melting point of 220°C
PA 6.6
Polyamide 6.6 is one of the most commonly used engineering materials. Due to the fact that it has better heat resistance than PA 6, it is often chosen for applications with higher requirements on heat resistance. Just as with PA 6, PA 6.6 is available in a large number of variants. Its primary properties are:
● Semi-crystalline structure
● Very good impact resistance
● High heat resistance (higher than PA 6)
● Good mechanical properties up to 140–160°C
● Very good chemical resistance to oils, fats, and most solvents
● High moisture absorption (but lower than PA 6)
● Glass-transition temperature of 50°C
● Melting point of 260°C
● Good chemical resistance to strong acids and alkalines
PA 12
Polyamide 12 is manufactured through the polymerization of laurolactam. PA 12 is a semi-crystalline thermoplastic with excellent chemical and hydrolytic resistance. It is without doubt the easiest polyamide to process.
Its primary properties are:
● Semi-crystalline structure
● Very low water absorption
● Excellent dimensional stability
● Excellent chemical resistance
● Good workability
● Very good hydrolytic resistance
● Low density
● High impact resistance at temperatures above -40°C
