IROGRAN® A 78 E 4723

Polyester-based Thermoplastic Polyurethane

Product Description:
IROGRAN® A 78 E 4723 is a polyester-based Thermoplastic Polyurethane (TPU) for extrusion and injection molding applications. Key features are plasticizer-free, good oil and solvent resistance, excellent wear performance, resistance to dynamic stress and high transparency.
MAIN APPLICATIONS:
Thin wall technical parts and spiral hoses.

Details

30.01.2019 FW - Change of Abrasion value from 25mm³ to 30mm³ At Jan.2016: US / EAIME / APAC - / MTS / - finished 08.10.2016
Properties Key NORM Value Unit
Hardness (after 3 sec.) M ASTM D 2240 80 Shore A
Hardness (after 3 sec.) M ASTM D 2240 30 Shore D
Density M ASTM D 792 1.19 g/cm³
Tensile strength M ASTM D 412 5600 psi
Elongation @ break M ASTM D 412 660 %
Tensile stress @ 100% elongation M ASTM D 412 650 psi
Tensile stress @ 300% elongation M ASTM D 412 1550 psi
Tear strength M ASTM D 624 510 pli
Abrasion M ISO 4649 30 mm³
Bayshore rebound resilience M ASTM D 2632 47 %
Compression set at 70h @ 23°C M ASTM D 395 25 %
Compression set at 24h @ 70°C M ASTM D 395 38 %
Mold shrinkage M ASTM D 955 0.8 %
Softening range low E Huntsman TMA 155 °C
Softening range high E Huntsman TMA 165 °C
  • M = Injection moulded parts to meet DIN & ASTM requirements. Parts tempered for 20 hrs @ 100 °C prior to testing

  • E = Extruded film cut to ASTM requirements. Parts at room temperature aged prior to testing.

Processing Parameters

Melt Volume Rate [190°C / 21,6kg] ISO 1133-1  =  50 cm³/10min

Processing Parameter:   Extrusion
Temperature Profile °C
Feed Zone: 25 - 40
Barrel: 165 - 190
Die Head: 175 - 200
Nozzle: 170 - 200
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