Material Comparison
Compare verified engineering materials side by side with condition-specific mechanical properties.
| Parameter | Polyester Polyurethane (AU) | Polyether Polyurethane (EU) |
|---|---|---|
| Material Family | Rubber & Elastomers | Rubber & Elastomers |
| Subfamily | Polyurethane Elastomers | Polyurethane Elastomers |
| ASTM Designation | AU | EU |
| ISO Designation | AU | EU |
| ASTM-D2000 Designation | Type BG (AU) | Type BG (EU) |
| Element | Polyester Polyurethane (AU) | Polyether Polyurethane (EU) |
|---|
| Mechanical Parameter | Polyester Polyurethane (AU)Cast Prepolymer Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) | Polyether Polyurethane (EU)Cast PTMEG-Based Polyether Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) |
|---|---|---|
| Compression Set (22h at 70°C) · Cast Prepolymer Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) · RANGE · 70 °CUnit: % | 20–35 % | 22–38 % |
| Hardness Scale | Polyester Polyurethane (AU) | Polyether Polyurethane (EU) |
|---|---|---|
| SHORE_A Hardness · Cast Prepolymer Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) · RANGE | 60–95 SHORE_A | 60–95 SHORE_A |
Machinability: Machined on conventional metalworking lathes using razor-sharp high-rake tooling and light depths of cut; ground with open-coat grinding wheels.
Formability / Cold Working: Processed via liquid cast prepolymer dispensing (open gravity or centrifugal molding) or thermoplastically injection molded/extruded (TPU pellets).
Heat Treatment & Annealing: Cast parts are demolded after initial gelling and subjected to post-cure ovens at 100°C to 110°C for 16 to 24 hours to achieve complete hard-segment phase separation and ultimate mechanical properties.
Machinability: Lathe turned with sharp ground high-speed steel tools; cryogenically machined with liquid nitrogen for complex seals.
Formability / Cold Working: Processed via two-component liquid casting or thermoplastic polyurethane (TPU) extrusion and injection molding with vacuum degassing.
Heat Treatment & Annealing: Post-cured in hot-air ovens at 100°C for 16 to 24 hours to achieve maximum mechanical property development.