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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