Hytrel® HTR8908 BK320 by Celanese is a flame retardant, halogen-, plasticizer-free thermoplastic polyester elastomer. It has soft hardness and is a heat stabilized colorable grade. It possesses excellent toughness, resilience, flexibility at low temperatures and good retention of properties at elevated temperatures.
- Hytrel® HTR8908 BK320 is suitable for processing by injection molding, thermoforming, casting, film-, sheet- and other extrusion.
- Provides high resistance to creep, impact and flex fatigue, industrial chemicals, oils and solvents.
- It has good melt stability which enables the recycling of properly handled production waste.
- Mostly used in wire & cable, automotive, fluid power, electrical/electronic, consumer goods, appliance, power tool, sporting goods, furniture, industrial and off-road transportation and equipment industry.
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Compliance
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Hytrel® HTR8908 BK320 properties
Flammibility properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Burning Rate | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flame Rating, UL 94 | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flame Rating, UL 94 | 0.0 Visible After Login | Visible After Login | Visible After Login |
Mechanical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| 10% Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| 5% Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| 50% Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Elongation at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hardness, Shore A | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hardness, Shore A | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hardness, Shore D | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hardness, Shore D | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Notched Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Notched Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Notched Izod | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Modulus of Elasticity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tear Strength, MD | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tear Strength, TD | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strength at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Linear Mold Shrinkage, Flow | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Linear Mold Shrinkage, Transverse | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index) | 0.0 Visible After Login | Visible After Login | Visible After Login |
Thermal properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Brittleness Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Deflection Temperature at 0.46 MPa (66 psi) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Glass Transition Temperature (Tg) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Vicat Softening Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
Hytrel® HTR8908 BK320 Processing Guidelines
Extrusion Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Drying Temperature | Visible After Login | Visible After Login | |
| Drying Time, Dehumidified Dryer | Visible After Login | Visible After Login | |
| Melt Temperature | Visible After Login | Visible After Login | |
| Processing Moisture Content | Visible After Login | Visible After Login | |
Injection Molding Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Drying Temperature | Visible After Login | Visible After Login | |
| Drying Time, Dehumidified dryer | Visible After Login | Visible After Login | |
| Melt Temperature | Visible After Login | Visible After Login | |
| Mold Temperature | Visible After Login | Visible After Login | |
| Processing Moisture Content | Visible After Login | Visible After Login | |








