Details of Physical Properties

High temperature stiffness

As AURUM™ has a high glass transition temperature (Tg: 245℃), it exhibits excellent high temperature stiffness at 150℃ and higher compared to PEEK.

Compared with a non-thermoplastic PI, since AURUM™ is a thermoplastic resin it can be fiber reinforced to improve initial strength (modulus of elasticity 3 > 22 GPa)

Graph image: High temperature stiffness

Coefficient of expansion

Thermoplastic resins can be filled with various additives to control the coefficient of expansion, making it possible to design materials based on the required properties.

Since AURUM™ is also a thermoplastic resin, its coefficient of expansion can be controlled.

As AURUM™ has the highest class of glass transition temperature of any thermoplastic resin, the coefficient of expansion is stable up to 245℃ (can be controlled at an equivalent level to aluminum)

Graph image: Coefficient of expansion


Regular polyimides are mostly non-thermoplastic and are primarily used for cutting from materials, but AURUM™ is the only aromatic that is a thermoplastic.

It has a glass transition temperature (Tg) that is 100℃ higher than PEEK resin, which is well known for its high heat resistance, and exhibits superior dimensional stability.

Graph image: Thermoplasticity

Sliding properties

AURUM™ has the highest critical PV value of any thermoplastic resin in a non-lubricated sliding atmosphere.

AURUM™ has the highest critical PV value under oil-lubrication compared with competing resins

Graph image: Sliding properties

Outgas properties

AURUM™ has low outgas properties at high temperature ranges compared with PEEK and non-thermoplastic PI

Graph image: Outgas properties

Radiation resistance

AURUM™ exhibits radiation resistance that is superior to PEEK and non-thermoplastic PI (reduction in tensile strength is minimal)

Graph image: Radiation resistance

Creep resistance

AURUM™ has a higher glass transition temperature (Tg 245℃) than PEEK and demonstrates superior creep resistance even in high temperature environments.

Graph image: Creep resistance

Chemical resistance

Since AURUM™ has a polyimide backbone structure, it exhibits excellent chemical resistance. It is also resistant to automotive gasoline and various lubricants, as well as various aviation fuels, lubricants and cleaning agents.

Graph image: Chemical resistance

Dimensional stability(shrinkage rate))

AURUM™ has half the shrinkage factor of PEEK (AURUM: 0.7%, PEEK: 1.5 - 2.0%), and produces superior dimensional accuracy in fiber-reinforced grade molded products.

As AURUM provides excellent dimensional accuracy for molded products, post-molding processing is not required even for components that demand high dimensional accuracy.

Graph image: Dimensional stability(shrinkage factor)
Table of Physical Properties