|Rochling Sustaplast Sustason and Sustatron|
Material Properties and Machining Guidelines for Sustason PSU, Sustason PPSU and Sustatron PPS
Test state: Dry. The specified electrical characteristic values were measured on the natural–colored, dry material. In the case of other colorings (particularly black) or moist material, significant changes in the electrical characteristic values can occur.
The short–term max. service temperature applies only to applications with extremely low loading over a few hours. The long–term max. service temperature is based on the thermal aging of the plastics due to oxidation, which results in a decrease in the mechanical properties.
Temperatures are specified which, after a minimum period of 5000 hours, cause a decrease in the tensile strength (measured at room temperature) by 50% compared with the initial value. This value does not provide any information about the mechanical strength of the material at high application temperatures. In the case of thick–walled parts, oxidation at high temperatures only affects the surface layer, which can be better protected by adding antioxidants. The core area of the parts always remains intact. The minimum service temperature is determined decisively by a possible shock or impact load during use.
The specified values refer to low impact loading. The specified values have been calculated as average values on the basis of numerous individual measurements and correspond to our present state of knowledge. They merely serve as information about our products and as guidance values when choosing materials. They are by no means to be construed as a legally binding promise of any specific properties or suitability for specific purposes.
Since the properties are also governed by the dimensions of the semi–finished products and the degree of crystallization (e.g. nucleation through pigments), the actual values of the properties of a specific product can differ slightly from the information specified.
The following applies for polyamides: As a result of the absorption of moisture, the mechanical properties change, the material becomes tougher, more shock–resistant, the modulus of elasticity diminishes. Depending on the ambient atmosphere, temperature and time for the moisture to be absorbed, only one specific surface layer is however affected by the changes in properties. In the case of thick–walled parts, the core area remains unchanged.
The mechanical properties of fiber–reinforced materials have been calculated on injection–molded test specimens in grain direction. For the design of structures and the definition of material specifications, we are happy to supply you with appropriate information for your application upon request.
FDA Compliance based upon unfilled resins. Any special colors or additives can affect the compliance.