Product Information
Oct 2019
Ultraform® N 2640 Z4 UNC Q600
Polyoxymethylene (POM)
 

 
Product Description
Ultraform N 2640 Z4 UNC Q600 is a high toughness, elastomer-modified injection molding POM grade.

Applications
Typical applications include toys components such as bicycle frames, automotive parts such as cladding elements and windshield wiper units, and clips, snap and fastening elements, and other components subject to impact stress.

PHYSICAL ISO Test Method Property Value
Density, g/cm³ 1183 1.35
Mold Shrinkage, parallel, % 294-4 1.8
Mold Shrinkage, normal, % 294-4 1.8
Moisture, % 62  
    (50% RH) 0.25
    (Saturation) 0.8
RHEOLOGICAL ISO Test Method Property Value
Melt Volume Rate (190 C/2.16 Kg), cc/10min. 1133 5.5
MECHANICAL ISO Test Method Property Value
Tensile Modulus, MPa 527  
    23C 1,700
Tensile stress at yield, MPa 527  
    23C 44
    80C 22
Tensile strain at yield, % 527  
    23C 14
Nominal strain at break, % 527  
    23C >50
Tensile Creep Modulus (1000h), MPa 899 1,000
Tensile Creep Modulus (1h), MPa 899 1,350
IMPACT ISO Test Method Property Value
Charpy Notched, kJ/m2 179  
    -30C 8
    23C 13
Charpy Unnotched, kJ/m2 179  
   -30C 300
    23C N
THERMAL ISO Test Method Property Value
Melting Point, C 3146 167
HDT A, C 75 75
HDT B, C 75 140
Coef. of Linear Thermal Expansion, Parallel, mm/mm C 1.3 X10-4
ELECTRICAL ISO Test Method Property Value
Comparative Tracking Index IEC 60112 600
Volume Resistivity (Ohm-m) IEC 60093 1E11
Surface Resistivity (Ohm) IEC 60093 1E14
Dielectric Constant (100 Hz) IEC 60250 4.2
Dielectric Constant (1 MHz) IEC 60250 4.2
Dissipation Factor (100 Hz), E-4 IEC 60250 110
Dissipation Factor (1 MHz), E-4 IEC 60250 190
Dielectric Strength, KV/mm IEC 60243-1 40

Processing Guidelines
Material Handling
Max. Water content: 0.15%
Product is supplied in polyethylene bags and drying prior to molding is not required. However, after relatively long storage or when handling material from previously opened containers, preliminary drying is recommended in order to remove any moisture which has been absorbed. If drying is required, a dehumidifying or desiccant dryer operating at 80 - 110C (176 - 230F) is recommended. Drying time is dependent on moisture level, however 2-4 hours is generally sufficient. Further information concerning safe handling procedures can be obtained from the Safety Data Sheet. Alternatively, please contact your BASF representative.

Typical Profile
Melt Temperature 190-230C (375-446F)
Mold Temperature 60-120C (140-248F)
Injection and Packing Pressure 35-70 bar (500-1000psi)


Mold Temperatures
A mold temperature of 80-90C (176-194F) is recommended, however temperatures of as low as 45C (113F) and as high as 105C (221F) can be used where applicable.

Pressures
Injection speed must be optimized. A filling rate which is too high results in anisotropic mechanical properties, while a filling rate which is too low yields parts with poor surface finish. The tool must be vented to avoid burn marks and prevent mold deposits. Injection pressure controls the filling of the part and should be applied for 90% of ram travel. Packing pressure affects the final part and can be used effectively 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.

Fill Rate
Injection speed must be optimized. A filling rate which is too high results in anisotropic mechanical properties, while a filling rate which is too low yields parts with poor surface finish. The tool must be vented to avoid burn marks and prevent mold deposits.


Note
Although all statements and information in this publication are believed to be accurate and reliable, they are presented gratis and for guidance only, and risks and liability for results obtained by use of the products or application of the suggestions described are assumed by the user. NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING PRODUCTS DESCRIBED OR DESIGNS, DATA OR INFORMATION SET FORTH. Statements or suggestions concerning possible use of the products are made without representation or warranty that any such use is free of patent infringement and are not recommendations to infringe any patent. The user should not assume that toxicity data and safety measures are indicated or that other measures may not be required.
 


  BASF Corporation
Engineering Plastics
1609 Biddle Avenue
Wyandotte, MI 48192
General Information: 800-BC-RESIN
Technical Assistance: 800-527-TECH (734-324-5150)
Web address: http://www.plasticsportal.com/usa