Plastic Nylon PA66

Plastic Nylon PA66 (dry) strength, stiffness, density and thermal properties, with their source.

A bracket in Plastic Nylon PA66, smooth finish.

Mechanical
Process	Bulk polymer (molded or machined)
Yield strength	85MPasourcetypical, dry
Ultimate tensile strength	not sourced
Elongation at break	30%sourcenominal strain at break, dry
Young's modulus (stiffness)	3GPasourcetypical, dry
Density	1,130kg/m³sourcetypical
Strength to weight	75.2kN·m/kg
Stiffness to weight	2.65MN·m/kg
Poisson's ratio	0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1)
Shear modulus	1.07GPa
Bulk modulus	5GPa
Speed of sound	1,629m/s
Thermal
Thermal conductivity	0.33W/m·Ksourcetypical
Thermal expansion	98µm/m·Ksourcelongitudinal, 23-55 °C
100 mm part over a 50 °C swing	490µm growth
Specific heat	1,700J/kg·Ksourcetypical
Heats up and cools (diffusivity)	0.172mm²/s
Thermal shock resistance	57.2W/m
Melting point	260°CsourceDSC
Max service temperature	101°CsourceIEC 60216 temperature index, 20000 h
Values for	BASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods)

Among 59 materials

Stiffness against density

Strength against density