ULTRAFORM® N2640 Z4 AT Black140 Polyacetal

1 of 22 products in this brand
ULTRAFORM® N2640 Z4 AT Black140 Polyacetal elastomer-modified injection molding grade with high impact strength. Ideal for clips, snap and fastening elements, and components subject to impact stress.

Polymer Name: Polyacetal Copolymer (POM)

Processing Methods: Injection Molding

  • TypeDocument Name
View All Documents

Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Plastics & Elastomers Functions
Technologies
Product Families

Features & Benefits

Applications & Uses

Properties

Color (Properties)
Flame Rating
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Modulus1700.0MPaISO 527-1/-2
Yield Stress (50 mm/min)44MPaISO 527-1/-2
Yield Strain (50 mm/min)14%ISO 527-1/-2
Nominal Strain at Break, 50 mm/minmin. 50%ISO 527-1/-2
Charpy Unnotched Impact Strength (at 23°C)NkJ/m²ISO 179/1eU
Charpy Unnotched Impact Strength (at -30°C)NkJ/m²ISO 179/1eU
Charpy Notched Impact Strength (at 23°C)15kJ/m²ISO 179/1eA
Charpy Notched Impact Strength (at -30°C)8.0kJ/m²ISO 179/1eA
Ball Indentation Hardness (at 358 N/30 S)85MPaISO 2039-1
Typical Properties
ValueUnitsTest Method / Conditions
Polymer Abbreviation (at 23°C)POM + PUR--
Density (at 23°C)1360kg/m³ISO 1183
Water Absorption (Equilibrium in Water, at 23°C)1%similar to ISO 62
Moisture Absorption, (Equilibrium at 23°C/50% r.h)0.25%similar to ISO 62
Bulk Density (at 23 °C )approx. 850g/l
Thermal Properties
ValueUnitsTest Method / Conditions
HDT A (1.80 MPa)75°CISO 75-1/-2
Service Temperature (Short Cycle Operation)max. 100°C-
Coefficient of Linear Thermal Expansion, Longitudinal (at 23°C - 55°C)130E - 6/KISO 11359-1/-2
Electrical Properties
ValueUnitsTest Method / Conditions
Relative Permittivity (1 MHz)4.2-IEC 62631-2-1
Dissipation Factor (1 MHz)190E - 4IEC 62631-2-1
Volume Resistivity1×10⁸Ohm.mIEC 62631-3-1
Surface Resistivity1×10¹³OhmIEC 62631-3-2
Electric Strength K20/P5085kV/mmIEC 60243-1
Comparative Tracking Index - CTI600-IEC 60112,Test LIquid A
Flammability
ValueUnitsTest Method / Conditions
Ul94 Rating (at 1.5 mm Thickness)HBclassIEC 60695-11-10
Automotive Materials (Thickness D > 1 mm) ³Passed-ISO 3795, FMVSS 302
Injection Molding
ValueUnitsTest Method / Conditions
Melt Temperature (Range)190 - 215°C
Mold Temperature (Range)60 - 80°C-
Residence Timemax. 10min-
Drying
ValueUnitsTest Method / Conditions
Moisture Contentmax. 0.2%-
Dryer Temperature ¹100°C-
Drying Time3h-
Machine Settings
ValueUnitsTest Method / Conditions
Temperature Hopper Throat80°C-
Cylinder Temperature 1 (Feed Zone)200°C-
Cylinder Temperature 2 (Compression)200°C-
Cylinder Temperature 3 (Metering - Zone, in Front of The Screw)200°C-
Cylinder Temperature 4 (Nozzle)200°C-
Peripheral Screw Speedmax. 0.3m/s-
Processing Properties
ValueUnitsTest Method / Conditions
Melting Temperature166°CISO 11357-1/-3,DSC
Melt Volume-Flow Rate at 190 °C and 2.16 kg5.5cm³/10minISO 1133
Melt Temperature (Injection Molding)190 - 215°C-
Mold Temperature (Injection Molding)60 - 80°C-
Molding Shrinkage (Parallel)1.8%ISO 294-4
Molding Shrinkage (Normal)1.8%ISO 294-4
Note
  1. The granules or pellets in their original packaging can generally be processed without any special preliminary treatment. However, granules or pellets which have become moist due to prolonged or incorrect storage must be dried in suitable dryers, e.g. dehumidifying dryers.

Regulatory & Compliance

Safety & Health

Product Safety
  • Ultraform® is not a hazardous material as defined in the German Ordinance on Hazardous Materials.
  • If Ultraform® is processed properly little or no formaldehyde occurs in the region of the processing machine. Measures should be taken to ensure ventilation and venting of the work area, preferably by means of an extraction hood over the barrel unit.
  • Ultraform® decomposes when subjected to excessive heat. The decomposition products formed in this case consist almost exclusively of formaldehyde, a gas which has a pungent smell even at very low concentrations and irritates the mucous membranes. Decomposition can rapidly result in the build-up of a high gas pressure in the barrel of the processing unit. If the die is sealed there may be a sudden release of pressure via the filling hopper.
  • Contamination of Ultraform® by thermoplastics that cause decomposition of polyacetals, e.g. PVC or plastics containing halogenated fire protection agents, must be avoided under all circumstances. Even small quantities can cause uncontrolled and rapid decomposition of Ultraform® during processing.
  • If processing with color masterbatches or functional batches is intended, the compatibility of the components must be established by suitable trials. Processing with incompatible masterbatches may result in decomposition and release of gaseous formaldehyde.
  • Pellets and finished parts must not be allowed to come into contact with strong acids (especially concentrated hydrochloric acid) since they cause Ultraform® to decompose.

Packaging & Availability

Packaging Information

Standard packs are 25 kg PE bag and 1000 kg Octabin (octagonal container). 

Storage & Handling

Shelf Life
Min. 1 year
Storage Information
  • Ultraform® is not subject to change when it is stored in dry, ventilated rooms.
  • After relatively long storage (>1 year) or when handling material from previously opened containers, preliminary drying is recommended in order to remove any moisture which has been absorbed.
Storage Information
  • Ultraform® is not subject to change when it is stored in dry, ventilated rooms.
  • After relatively long storage (>1 year) or when handling material from previously opened containers, preliminary drying is recommended in order to remove any moisture which has been absorbed.