Celanex® 2500

About
Chemical abbreviation according to ISO 1043-1: PBT Moulding compound ISO 7792- PBT, MGHR, 08-030N Polybutylene terephthalate, easy flow, nucleated grade Flammability UL 94 HB Minimum thickness 1.0 mm. Recognition by Underwriters Laboratories, USA (UL)&&

Product Description
SupplierCelanese
Genericpolybutylene terephthalate
Material StatusCommercial: Active
FeaturesGood liquidity,Nucleation,HB
AvailabilitysEurope

Technical Data
MECHANICALNominal valueUnitTest method
Tensile modulus2700MPaISO 527-2/1A/1
tensile strength ISO 527-2/1A/50
yield60.0MPaISO 527-2/1A/50
fracture60.0MPaISO 527-2/1A/50
Tensile strain
yield4.0%ISO 527-2/1A/50
Nominal tensile fracture strain15%ISO 527-2/1A/50
Tensile creep modulus ISO 899-1
1 hr2400MPaISO 899-1
1000 hr1600MPaISO 899-1
bending strength
23℃90.0MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-30℃4.5kJ/m²ISO 179/1eA
23℃5.0kJ/m²ISO 179/1eA
Charpy Unnotch Impact strength ISO 179/1eU
-30℃130kJ/m²ISO 179/1eU
23℃140kJ/m²ISO 179/1eU

THERMALNominal valueUnitTest method
Hot deformation temperature 
0.45 MPa, unannealed160ISO 75-2/B
1.8 MPa, unannealed60.0ISO 75-2/A
Vicat Softening Temp
B50190ISO 306
Melting temperature225ISO 11357-3
Linear coefficient of thermal expansion
MD1.1E-41/℃ISO 11359-2

Electrical performanceNominal valueUnitTest method
Surface resistivity> 1.0E+15ohmsIEC 60093
Volume resistivity> 1.0E+15ohms·cmIEC 60093
Dielectric strength23kV/mmIEC 60243-1
Relative permittivity IEC 60250
100 Hz3.90 IEC 60250
1 MHz3.80 IEC 60250
Dissipation factor IEC 60250
100 Hz1.3E-3 IEC 60250
1 MHz0.020 IEC 60250
Compared to the leakage tracing index600VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level UL 94
1.00 mmHB UL 94
1.50 mmHB UL 94
Extreme oxygen index22%ISO 4589-2

PHYSICALNominal valueUnitTest method
Density1.31g/cm³ISO 1183
Melt Volume Rate
250℃,2.16 kg40.0cm³/10minISO 1133
Shrinkage rate
MD1.8 to 2.0%ISO 294-4
Water absorption rate
Equilibrium, 23 ℃, 50% RH0.20%ISO 62
Density of Melt1.110g/cm³Internal Method
Specific Heat Capacity of Melt1920J/kg/℃Internal Method
Thermal Conductivity of Melt0.13W/m/KInternal Method

Process Conditions
injectionNominal valueUnitTest method
Drying temperature120 to 140°C
Drying time2.0 to 4.0hr
Recommended maximum moisture content0.020%
Hopper temperature20 to 50°C
Barrel rear temperature240 to 250°C
Barrel middle temperature240 to 250°C
Barrel front temperature245 to 255°C
Nozzle temperature250 to 260°C
Processing (melt) temperature250 to 260°C
Mold temperature75 to 85°C
Injection pressure60.0 to 100MPa

Notes
1. Typical properties: these are not to be construed as specifications.
2. 30s
3. 10°C/min
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