Zytel® ST811HS BK038

About
Super Toughened, Heat Stabilized, Polyamide 6&&

Product Description
SupplierDuPont
GenericPA6
Material StatusCommercial: Active
FeaturesHeat Stabilized
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe
Process MethodsExtrusion

Technical Data
MECHANICALNominal valueUnitTest method
Tensile modulus900MPaISO 527-2
tensile strength
yield31.0MPaISO 527-2
Tensile strain
yield29%ISO 527-2
Bending modulus850MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-40℃12kJ/m²ISO 179/1eA
23℃80kJ/m²ISO 179/1eA
Charpy Unnotch Impact strength
23℃No Break ISO 179/1eU
Impact strength of cantilever beam notch ISO 180/1A
-40℃13kJ/m²ISO 180-1A
23℃65kJ/m²ISO 180-1A
Notched impact strength of cantilever beam
23℃No Break ISO 180/1U

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed40.0ISO 75-2/A
0.45 MPa, unannealed85.0ISO 75-2/B
Glass transition temperature50.0ISO 11357-2
Melting temperature218ISO 11357-3
Linear coefficient of thermal expansion
TD1.4E-41/℃ISO 11359-2
MD1.3E-41/℃ISO 11359-2

FLAME CHARACTERISTICSNominal valueUnitTest method
Burning rate
1 mm< 100mm/minISO 3795
FMVSS flame retardant ratingB FMVSS 302

PHYSICALNominal valueUnitTest method
Density1.05g/cm³ISO 1183
Shrinkage rate ISO 294-4
TD1.4%ISO 294-4
MD0.90%ISO 294-4
Water absorption rate
Equilibrium, 23 ℃, 50% RH, 2.00 mm2.3%ISO 62
Ejection temperature190

Process Conditions
injectionNominal valueUnitTest method
ExtrusionNominal valueUnitTest method
Drying temperature60
Drying time – hot air dryer2.0 to 4.0
Recommended maximum moisture content0.20
Processing (melt) temperature260 to 280
Melt Temperature, Optimum270
Mold temperature50 to 90
Mold Temperature, Optimum70
Hold pressure50.0 to 100
Drying Recommendedyes
Hold Pressure Time4.00
Maximum Screw Tangential Speed300
Drying temperature60
Drying time4.0 to 6.0
Recommended maximum moisture content0.060
Melt temperature235 to 250
Extrusion Melt Temperature, Optimum240

Notes
1. Typical properties: these are not to be construed as specifications.
2. 10°C/min
3. FMVSS 302
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