Ultraform® H 4320 UNC Q600

About
Ultraform H 4320 UNC Q600 is an extrusion POM high molecular weight grade. This grade enables high extrusion rates with thick-walled product. It also exhibits high thermal stability and a low tendency to discolor. Applications Typical applications include pipe and semi-finished parts for gear wheels, bearings and other mechanical elements.&&

Product Description
SupplierBASF
GenericCopolymer Polyformaldehyde
Material StatusCommercial: Active
FeaturesGood color stability,High molecular weight,Copolymer,Heat Stabilized
AvailabilitysNorth America
Process MethodsExtrusion

Technical Data
PHYSICALNominal valueUnitTest method
Density1.39g/cm³ASTM D792 , ISO 1183
Melt Volume Rate
190℃,2.16 kg2.20cm³/10minISO 1133
Shrinkage rate 
MD:3.2 mm2.0%
TD2.1%ISO 294-4
MD2.2%ISO 294-4
Water absorption rate 
saturated0.80%ASTM D570
Saturation, 23 ℃0.80%ISO 62
Balance, 50% RH0.20%ASTM D570
Equilibrium, 23 ℃, 50% RH0.20%ISO 62

MECHANICALNominal valueUnitTest method
Tensile modulus
23℃2600MPaISO 527-2
tensile strength 
Yield, 23 ℃63.0MPaASTM D638 , ISO 527-2
Yield, -40 ℃93.0MPaISO 527-2
Yield, 80 ℃32.0MPaISO 527-2
Tensile strain
Yield, 23 ℃10%ASTM D638 , ISO 527-2
Nominal tensile fracture strain
23℃31%ISO 527-2
Tensile creep modulus
1000 hr1300MPaISO 899-1
Bending modulus 
23℃2410MPaASTM D790
23℃2700MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179
-30℃5.5kJ/m²ISO 179
23℃6.0kJ/m²ISO 179
Charpy Unnotch Impact strength ISO 179
-30℃180kJ/m²ISO 179
23℃250kJ/m²ISO 179
Impact strength of cantilever beam notch 
-40℃69J/mASTM D256
23℃80J/mASTM D256
-40℃4.0kJ/m²ISO 180
23℃5.0kJ/m²ISO 180

THERMALNominal valueUnitTest method
Hot deformation temperature 
0.45 MPa, unannealed154ASTM D648
0.45 MPa, unannealed156ISO 75-2/B
1.8 MPa, unannealed96.0ASTM D648
1.8 MPa, unannealed95.0ISO 75-2/A
Melting peak temperature166ASTM D3418 , ISO 3146
Linear coefficient of thermal expansion
MD 
6.0E-5cm/cm/℃ASTM E831
1.1E-4cm/cm/℃

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+13ohmsASTM D257,IEC 60093
Volume resistivity 
1.50 mm1.0E+13ohms·cmASTM D257
1.0E+13ohms·cmIEC 60093
Dielectric strength40kV/mmIEC 60243-1
Dielectric constant IEC 60250
100 Hz3.80 IEC 60250
1 MHz3.80 IEC 60250
Dissipation factor IEC 60250
100 Hz1.0E-3 IEC 60250
1 MHz5.0E-3 IEC 60250
Compared to the leakage tracing index600VIEC 60112

Process Conditions
ExtrusionNominal valueUnitTest method
Drying temperature80 to 110°C
Drying time2.0 to 4.0hr
Recommended maximum moisture content0.15%
Barrel 1 zone temperature170°C
Barrel 3 zone temperature180°C
Barrel 5 zone temperature200°C
Connector temperature175°C
Melt temperature175 to 200°C
Nozzle temperature175°C
Extruder screw length to diameter ratio L / D20.1:1.0 to 25.0:1.0 
Extruder screw compression ratio3.0:1.0 

Notes
1. Typical properties: these are not to be construed as specifications.
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