Duramid N6-25 BK-104
Supplied by DBL International, Inc.
Description:
Duramid N6-25 BK-104 is a utility grade, 25% glass reinforced, jet black nylon 6 injection moulding compound offering excellent strength, stiffness and dimensional stability. This balance of engineering properties combined with excellent processability make it ideal in applications replacing metal, resulting in an overall cost and weight saving.
Properties:
The addition of glass fibre reinforcement to a nylon moulding compound enhances its performance characteristics. Duramid N6-25 BK-104 exhibits a balance of engineering properties including high strength and rigidity. Its resistance to creep under load is excellent. Like conventional nylons, Duramid N6-25 BK-104 maintains its inherent chemical resistance, particularly to greases, oils and hydrocarbons.
Processing Guidelines
Melt Temperature:
Duramid N6-25 BK-104 exhibits a crystalline melting point of 215°C and a melt temperature range of 271°-293°C is recommended for most applications.
| Typical Temperature Profile: |
|---|
| Zone | °C |
|---|
| Rear | 249-271
|
| Middle | 260-282
|
| Front | 271-293
|
| Nozzle | 271-293
|
Mould Temperature:
Duramid N6-25 BK-104 can be processed over a wide range of mould temperatures, however for applications where aesthetics are critical, a mould surface temperature of 82°-93°C is required.
Pressures:
Injection and packing pressures are generally within the limits of 500-1800 psi. Injection pressure controls the filling of the part and should be applied for 90% of ram travel. Packing pressure affects the final dimensions and can be effectively used in controlling sink marks and shrinkage. It should be applied and maintained until the gate area is completely frozen off. Back pressure can be utilized to provide uniform melt consistency and reduce trapped air and gas. A maximum back pressure of 50 psi is recommended to minimize glass fibre breakage.
Fill Rate:
Fast fill rates are recommended to ensure uniform melt delivery to the cavity and prevent premature freezing. Surface appearance is directly affected by injection rate. The fast fill enables the glass fibres to become displaced by a resin-inch surface at the mould interface. Injection speeds of one inch of ram travel per second are generally required for obtaining good surface qualities.
Regrind:
Recommended regrind levels are no more than 25-30%. Higher levels may affect part performance due to excessive glass fibre breakage.
Material Handling:
Duramid N6-25 BK-104 is supplied in sealed containers and drying prior to moulding is not required. If drying becomes necessary a dehumidifying or desiccant dryer operating at 82°C is recommended. Drying time is dependent upon moisture level and resin should be dried to less than 0.12% moisture. Further information on safe handling procedures can be obtained from the product Material Safety Data Sheet.
| Typical Physical Properties | DAM | ASTM Test
|
|---|
| Tensile Strength | 151 MPa | D-638
|
| Flexural Strength | 192 MPa | D-790
|
| Flexural Modulus | 7000 MPa | D-790
|
| Notched Izod Impact Strength | 62 J/m | D-256
|
| Specific Gravity | 1.32 | D-792
|
| Melting Point | 215 °C | D-789
|
| Heat Deflection @ 264 psi | 210 °C | D-648
|
DISCLAIMER Although all statements, information, and data given herein are believed to be accurate, they are presented without guarantee, warranty, or responsibility of any kind, express or implied. Statements or suggestions concerning possible use of our products are made without representation or warranty that any such use is free of patent infringement, and are not suggestions to infringe any patent. The user should not assume that all safety measures are indicated or that other measures may not be required. Further information concerning safe handling procedures can be obtained from the Product Material Safety Data Sheet.
The above specification are believed to be accurate. They are not intended as a representation of fact or warranty of any kind. Buyers must make their own representative test and assume all risks of use whether used alone or in combination with other products.
© 1998 DBL International, Inc.