TPEE DSM EL550

TPEE DSM EL550 (Netherlands, now Covestro)

TPEE DSM EL550 from the Netherlands (now Covestro) is a thermoplastic polyester elastomer. It delivers high flowability, good heat resistance, and well‑balanced mechanical strength and elasticity.

Main Applications

Automotive Industry: Such as air‑bag components, dust‑proof boots, pipeline systems.

Electrical‑Electronic Products: Cable sheaths, elastic appliance keys, etc.

Consumer Goods: Footwear materials (shoe soles, shoe heels), sports equipment, silent gears.

Physical Properties

Property Category	Test Item	Test Condition	Test Standard	Test Data	Unit
Physical Properties	Density	—	ISO 1183	1200‑1210	kg/m³
	Water Absorption	23°C, 24hr	ISO 62	0.65	%
	Melt Flow Rate	230°C/2.16kg	ISO 1133	36	cm³/10min
Mechanical Properties	Shore Hardness	—	ISO 868	51‑53	Shore D
	Tensile Modulus	—	ISO 527	170‑200	MPa
	Tensile Strength	—	ISO 527	30‑32	MPa
	Elongation at Break	—	ISO 527	450‑640	%
	Charpy Notched Impact Strength	‑30°C	ISO 179/1eA	25	kJ/m²
	Tear Strength	—	ISO 34	115	kN/m
Thermal Properties	Heat‑Distortion Temperature	0.45 MPa	ISO 75	110	°C
	Vicat Softening Temperature	50°C/h, 50N	ISO 306	90	°C
	Melting Temperature	—	ISO 11357	207	°C
Electrical Properties	Volume Resistivity	—	IEC 60093	1E+11‑1E+13	Ohm·m
	Dielectric Strength	—	IEC 60243‑1	21	kV/mm
Flame Retardancy	Flammability Class	1.5 mm	UL 94	HB	Class

Processing Technology

Process Parameter	Reference Range / Recommendation	Unit
Drying Treatment
Drying Temperature	80‑90	°C
Drying Time	2‑4	h
Injection Molding
Rear Barrel Zone	160‑180	°C
Middle Barrel Zone	180‑210	°C
Front Barrel Zone	200‑230	°C
Nozzle Temperature	200‑230	°C
Mold Temperature	20‑50	°C
Injection Speed	Medium‑High speed	—
Holding Pressure	50%‑70% of injection pressure	—
Extrusion
Processing Temperature	200‑250	°C

Note: All information above is for reference only!