FFKM Perfluoroelastomer (Kalrez 4079) vs Natural Rubber (NR vulcanized)
Property comparison of FFKM Perfluoroelastomer (Kalrez 4079) and Natural Rubber (NR vulcanized), both rubber elastomer.
| Property | FFKM Perfluoroelastomer (Kalrez 4079) | Natural Rubber (NR vulcanized) | Difference |
|---|---|---|---|
| Tensile strength | 17 MPa | 25 MPa | +47% |
| Elongation | 150 % | 600 % | +300% |
| Poisson ratio | 0.48 | 0.5 | +4% |
| Density | 2,020 kg/m³ | 1,200 kg/m³ | -41% |
| Coefficient of thermal expansion | 0.00036 1/K | 0.00022 1/K | -39% |
Difference is Natural Rubber (NR vulcanized) relative to FFKM Perfluoroelastomer (Kalrez 4079). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM
- standard
- ASTM
What else is in Engineering Database
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators