Ultradur® B 2520

About
Very easy flowing grade unreinforced injection molding grade for thin-walled parts (e.g. automotive connectors, switches, relay parts).&&

Product Description
SupplierBASF
Genericpolybutylene terephthalate
Material StatusCommercial: Active
FeaturesGood liquidity
AvailabilitysAsia Pacific
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.31g/cm³ISO 1183
Shrinkage rate
MD:2.0 mm1.5%ISO 294-4
TD:2.0 mm1.5%ISO 294-4
Water absorption rate
23℃,24hr0.40%ISO 62
23℃,50% RH0.20%ISO 62
Melt Flow Rate
250℃,2.16kg55.0g/10minISO 1133

MECHANICALNominal valueUnitTest method
tensile strength
23℃57.0MPaISO 527-2
Tensile strain
Fracture, 23 ℃4.0%ISO 527-2
Tensile modulus
23℃2550MPaISO 527-2

THERMALNominal valueUnitTest method
Hot deformation temperature
0.45 MPa, unannealed140ISO 75-2/Bf
1.8 MPa, annealed57.0ISO 75-2/Af
Melting temperature223ISO 11357-3
Vicat Softening Temp
Thermal conductivity coefficient0.27W/m/KDIN 52612
Linear coefficient of thermal expansion
MD1.3E-41/℃ISO 11359-2

Electrical performanceNominal valueUnitTest method
Volumetric resistance1.0E+18Ω.cmIEC 60093
Dielectric constant
23℃3.30100 HzIEC 60250
23℃3.301 MHzIEC 60250
Dissipation factor
23℃1.3E-3100 HzIEC 60250
23℃0.0201 MHzIEC 60250
Compared to the leakage tracing index500VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
0.800mmHBUL-94
1.60mmHBUL-94

IMPACTNominal valueUnitTest method
Charpy Unnotch Impact strength
23℃170kJ/m²ISO 179/1eU
-30℃70kJ/m²ISO 179/1eU
Charpy Notched Impact Strength
23℃3.1kJ/m²ISO 179/1eA

Notes
1. Typical properties: these are not to be construed as specifications.
2. solution 0,005 g/ml Phenole/1,2 Dichlorbenzol 1:1
3. plate with film gate 150*150*3 mm³
4. 5000 h
5. 20000 h
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