Ultraform® N 2640 Z4

About
Elastomer-modified injection molding grade with high impact strength for clips, snap and fastening elements, and also for components subject to impact stress.&&

Product Description
SupplierBASF
GenericCopolymer Polyformaldehyde +PUR
Material StatusCommercial: Active
FeaturesHigh impact resistance,HB
AvailabilitysAsia Pacific,Europe
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.35g/cm³ISO 1183
Melt Volume Rate
190℃,2.16 kg5.50cm³/10minISO 1133
Shrinkage rate ISO 294-4
TD1.8%ISO 294-4
MD1.8%ISO 294-4
Water absorption rate ISO 62
Saturation, 23 ℃0.80%ISO 62
Equilibrium, 23 ℃, 50% RH0.20%ISO 62

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-30℃8.0kJ/m²ISO 179/1eA
23℃13kJ/m²ISO 179/1eA
Charpy Unnotch Impact strength ISO 179/1eU
-30℃300kJ/m²ISO 179/1eU
23℃无断裂 ISO 179/1eU

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed75.0ISO 75-2/A
Melting temperature167ISO 11357-3
Linear coefficient of thermal expansion
MD:23~55℃1.3E-41/℃ISO 11359-2
Maximum operating temperature
short cycle operation100

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+14ohmsIEC 60093
Volume resistivity1.0E+13ohms·cmIEC 60093
Dielectric strength85kV/mmIEC 60243-1
Relative permittivity
1 MHz4.20 IEC 60250
Dissipation factor
1 MHz0.019 IEC 60250
Compared to the leakage tracing index
Solution A600VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method

Supplementary informationNominal valueUnitTest method
ISO TypePOM-K, M-GNPR, 02-001 ISO 9988-1

MECHANICALNominal valueUnitTest method
Ball hardness
H358/3085.0MPaISO 2039-1
Tensile modulus1700MPaISO 527-2
tensile strength
yield44.0MPaISO 527-2/50
Tensile strain
yield14%ISO 527-2/50
Nominal tensile fracture strain> 50%ISO 527-2/50
Tensile creep modulus
1000 hr1000MPaISO 899-1

Process Conditions
injectionNominal valueUnitTest method
Drying temperature100°C
Drying time3.0hr
Recommended maximum moisture content0.20%
Hopper temperature200°C
Barrel rear temperature200°C
Barrel middle temperature200°C
Barrel front temperature200°C
Nozzle temperature200°C
Processing (melt) temperature190 to 215°C
Mold temperature60 to 80°C
Residence Time< 10.0min
Screw Speed< 300mm/sec

Notes
1. Typical properties: these are not to be construed as specifications.
2. strain <= 0,5%, 23°C
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