Plastic UHMWPE

Plastic UHMWPE strength, stiffness, density and thermal properties, with their source.

A bracket in Plastic UHMWPE, smooth finish.

Mechanical
Process	Bulk polymer (molded or machined)
Yield strength	20MPasourcetypical, tensile stress at yield ISO 527, 50 mm/min
Ultimate tensile strength	43MPasourcetypical, tensile stress at break ISO 527, 50 mm/min
Elongation at break	465%sourcetypical, nominal elongation at break ISO 527
Young's modulus (stiffness)	0.66GPasourcetypical, tensile modulus ISO 527, 1 mm/min
Density	930kg/m³sourcetypical
Strength to weight	21.5kN·m/kg
Stiffness to weight	0.71MN·m/kg
Poisson's ratio	not sourced
Shear modulus	not sourced
Bulk modulus	not sourced
Speed of sound	842m/s
Thermal
Thermal conductivity	0.4W/m·Ksourcetypical, unfilled (narrative value, generic Celanese UHMWPE)
Thermal expansion	200µm/m·Ksourcetypical, 20 to 100 °C (generic Celanese UHMWPE)
100 mm part over a 50 °C swing	1,000µm growth
Specific heat	not sourced
Heats up and cools (diffusivity)	not sourced
Thermal shock resistance	not sourced
Melting point	130–138°CsourceDSC 10 K/min
Max service temperature	80°Csourcerecommended max constant operating temperature
Values for	Celanese GUR 4120 (avg. molecular weight 4.7x10^6 g/mol), typical values on compression-molded specimens; CTE and thermal conductivity from Celanese's generic UHMWPE guide (grade not named)

Among 59 materials

Stiffness against density

Strength against density