ChronoFlex® AL 75A-B20

Category: TPU-PC , Thermoplastic Polyurethane Elastomer (PC Based)
Manufacturer: AdvanSource Biomaterials Corp.
Trademark: ChronoFlex®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: AUYQ4G_ChronoFlex-AL-75A-B20.pdf
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ChronoFlex AL is a family of biodurable aliphatic polycarbonate-based thermoplastic urethanes designed to overcome surface degradation such as stress-induced microfissures.

With a long history of reliable performance in both long and short term devices, this medical grade polymer has the versatility to be used across a broad range of applicational areas ranging from oncology and neurology to cardiovascular disease management.

These ether-free polyurethane elastomers are biostable and display a low modulus of elasticity, excellent solvent resistance and limited softening in-vivo.

These products are adaptable to most standard manufacturing processes and are available in hardnesses ranging from 75 Shore A to 75 Shore D.

AdvanSource Biomaterials synthesizes and manufactures medical grade materials offering the ability to tailor physical and mechanical characteristics to support and enhance your end product design.

These mechanical characteristic's, critical to the design and development of medical devices, can incorporate a wide range of physical and chemical properties while maintaining core characteristics such as biodurability and biocompatibility. In most materials, specialized characteristics such as the addition of colorant agents or antimicrobial properties (where applicable) can be added to the polymer to provide a homogenous material and limit secondary processing steps.

In addition, radiopaque agents may also be incorporated into the formula to provide additional product enhancements and may contain up to 40%, by weight, of a radiopaque agent thus allowing varied-scale visibility options.

With an expanding range of secondary operations including custom solution development, prototype coating capabilities, and project management services, ASB's expert team of chemists, scientists, engineers and industry professionals assist in every stage of customers' projects, from concept initiation through full-scale manufacture.
General Information
Features
  • Aliphatic
  • Biocompatible
  • Good Chemical Resistance
  • Good Strength
  • High ESCR (Stress Crack Resist.)
  • No Animal Derived Components
Uses
  • Medical/Healthcare Applications
Agency Ratings
  • ISO 10993 Part 10
  • ISO 10993 Part 11
  • ISO 10993 Part 5
  • USP Class VI
Forms
  • Pellets
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.10 to 1.40g/cm³ASTM D792
Melt Mass-Flow Rate (MFR) (205°C/3.26 kg)2.0 to 26g/10 minASTM D1238
HardnessNominal ValueUnitTest Method
Durometer Hardness (Shore A)75ASTM D2240
MechanicalNominal ValueUnitTest Method
Tensile Strength ASTM D638
    Break 27.6 to 62.1MPa
    50% Strain 2.41 to 4.48MPa
    100% Strain 3.79 to 5.86MPa
    200% Strain 5.52 to 8.27MPa
    300% Strain 8.27 to 13.8MPa
Tensile Elongation (Break)350 to 750%ASTM D638
InjectionNominal ValueUnit
Drying Temperature - Desiccant Dryer 71.1 to 93.3°C
Drying Time - Desiccant Dryer 3.0 to 4.0hr
Dew Point -40.0°C
Suggested Max Moisture 0.050%
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