Hostaform® WR140LG

About
Hostaform® acetal copolymer grade WR140LG Black is a specialty weatherable grade of acetal copolymer formulated to provide good flow with a low gloss finish and a UV stability necessary for exterior automotive applications.&&

Product Description
SupplierCelanese
GenericCopolymer Polyformaldehyde
Material StatusCommercial: Active
FeaturesWeather resistance is good,Good liquidity,Low Gloss
AvailabilitysNorth America,Latin America,Asia Pacific

Technical Data
PHYSICALNominal valueUnitTest method
Density1.33g/cm³ISO 1183
Melt Volume Rate
190℃,2.16 kg13.0cm³/10minISO 1133
Shrinkage rate ISO 294-4
TD1.5%ISO 294-4
MD1.6%ISO 294-4

MECHANICALNominal valueUnitTest method
Tensile modulus1800MPaISO 527-2/1A/1
tensile strength
yield41.0MPaISO 527-2/1A/50
Tensile strain
yield10%ISO 527-2/1A/50
Bending modulus
23℃1850MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-30℃3.6kJ/m²ISO 179/1eA
23℃3.6kJ/m²ISO 179/1eA

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed80.0ISO 75-2/A
Melting temperature165ISO 11357-3
Linear coefficient of thermal expansion
TD1.3E-41/℃ISO 11359-2
MD1.3E-41/℃ISO 11359-2

Process Conditions
injectionNominal valueUnitTest method
Drying temperature105 to 110°C
Drying time3.0hr
Barrel rear temperature170 to 175°C
Barrel middle temperature170 to 180°C
Barrel front temperature175 to 185°C
Nozzle temperature185 to 195°C
Processing (melt) temperature180 to 195°C
Mold temperature80 to 105°C
Injection pressure60.0 to 120MPa
Injection speedSlow 
Hold pressure60.0 to 120MPa
Back pressure0.00 to 4.00MPa

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