Tenac™ 4050

About
Tenac™ 4050 is an Acetal (POM) Homopolymer product. It is available in Africa & Middle East, Asia Pacific, Europe, or North America. Applications of Tenac™ 4050 include engineering/industrial parts and housings. Characteristics include: Flame Rated Creep Resistant Good Dimensional Stability Good Toughness High Stiffness&&

Product Description
SupplierAsahi Kasei
GenericParaformaldehyde
Material StatusCommercial: Active
FeaturesGood Rigidity,Good flexibility,High impact resistance,Good Dimensional Stability,Durability,Homopolymer,HB
AvailabilitysAfrica & Middle East ,North America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density1.42g/cm³ASTM D792 , ISO 1183
Melt Flow Rate
190℃,2.16kg7.0g/10minISO 1133
Shrinkage rate
MD1.8 to 2.2%Internal Method
Water absorption rate
23℃,24hr,50% RH0.20%ASTM D570

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength11kJ/m²ISO 179
Impact strength of cantilever beam notch90J/mASTM D256

THERMALNominal valueUnitTest method
Hot deformation temperature 
0.45 MPa, unannealed172ASTM D648
0.45 MPa, unannealed165ISO 75-2/B
1.8 MPa, unannealed136ASTM D648
1.8 MPa, unannealed110ISO 75-2/A
Linear coefficient of thermal expansion
MD1.0E-41/℃ASTM D696,ISO 11359-2
specific heat1470J/kg/℃
Thermal conductivity coefficient0.23W/m/K

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+16 to 1.0E+17ohmsASTM D257
Volume resistivity
23℃1.0E+15 to 1.0E+16ohms·cmASTM D257
Dielectric strength18kV/mmASTM D149
Dielectric constant
23 ℃,1 MHz3.80 ASTM D150
Dissipation factor
23℃,1 MHz7.0E-3 ASTM D150
Arc resistance250secASTM D495

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
0.75 mmHB UL 94

MECHANICALNominal valueUnitTest method
Rockwell hardness ASTM D785
M-level94 ASTM D785
R-level120 ASTM D785
Tensile modulus3300MPaISO 527-2
tensile strength 
yield76.0MPaISO 527-2
73.0MPaASTM D638
Tensile strain 
fracture35%ASTM D638
fracture30%ISO 527-2
Bending modulus 
3040MPaASTM D790
3000MPaISO 178
bending strength105MPaASTM D790
Taber abraser13.0mgASTM D1044

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