Riteflex® 677

About
Riteflex 677 is a thermoplastic polyester elastomer with nominal hardness of 77 shore D and high modulus.&&

Product Description
Supplier	Celanese
Generic	TPC-ET
Material Status	Commercial: Active
Features	Good Rigidity,HB
Availabilitys	Africa & Middle East ,North America,Latin America,Asia Pacific,Europe

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shore D, 15 seconds	75		ISO 868
Shaw’s D	77		ASTM D2240
Tensile modulus	750	MPa	ISO 527-2/1A/1
23℃	689	MPa	ASTM D638
tensile strength
fracture	42.0	MPa	ISO 527-2/1A/50
Yield, 23 ℃	34.5	MPa	ASTM D638
yield	33.0	MPa	ISO 527-2/1A/50
5% strain	32.0	MPa	ISO 527-2
10% strain	36.0	MPa	ISO 527-2
50% strain	26.0	MPa	ISO 527-2/1A/50
Tensile strain
Fracture, 23 ℃	310	%	ASTM D638
fracture	350	%	ISO 527-2/1A/50
yield	15	%	ISO 527-2/1A/50
Nominal tensile fracture strain	> 50	%	ISO 527-2/1A/50
Bending modulus			ISO 178
-40℃	2500	MPa	ISO 178
23℃	650	MPa	ISO 178
bending strength			ISO 178
3.50% strain	23.0	MPa	ISO 178
23℃	30.0	MPa	ISO 178

elastic body	Nominal value	Unit	Test method
tear strength	357	kN/m	ASTM D624
Basho’s elasticity
—	40	%	Internal Method
—	40	%	ASTM D2632

IMPACT	Nominal value	Unit	Test method
Charpy Notched Impact Strength
23℃	9.4	kJ/m²	ISO 179/1eA
Charpy Unnotch Impact strength			ISO 179/1eU
-30℃	4.5	kJ/m²	ISO 179/1eU
23℃	71	kJ/m²	ISO 179/1eU
Impact strength of cantilever beam notch			ISO 180/1A
-30℃	4.7	kJ/m²	ISO 180-1A
23℃	8.5	kJ/m²	ISO 180-1A
Notched impact strength of cantilever beam
23℃	No Break		ISO 180/1U

THERMAL	Nominal value	Unit	Test method
Hot deformation temperature
1.8 MPa, unannealed	51.0	℃	ISO 75-2/A
0.45 MPa, unannealed	109	℃	ISO 75-2/B
Melting peak temperature	217	℃	ASTM D3418
Melting temperature	218	℃	ISO 11357-3
Linear coefficient of thermal expansion
MD	1.4E-4	1/℃	ISO 11359-2

Electrical performance	Nominal value	Unit	Test method
Surface resistivity	2.0E+17	ohms	IEC 60093
Volume resistivity	5.0E+14	ohms·cm	ASTM D257
Volume resistivity	4.0E+16	ohms·cm	IEC 60093
Dielectric strength	15	kV/mm	ASTM D149
Dielectric strength	16	kV/mm	IEC 60243-1
Relative permittivity
1 MHz	3.30		IEC 60250
Dissipation factor
1 MHz	0.040		IEC 60250
Compared to the leakage tracing index	> 600	V	ASTM D3638
Compared to the leakage tracing index	> 600	V	IEC 60112

FLAME CHARACTERISTICS	Nominal value	Unit	Test method
Flame retardant level
1.50 mm	HB		UL 94

Supplementary information	Nominal value	Unit	Test method
tear strength	360.8	kN/m	ASTM D1004
Temperature	250	℃	Internal Method

Process Conditions
injection	Nominal value	Unit	Test method
Drying temperature	100 to 110	°C
Drying time	4.0	hr
Recommended maximum moisture content	0.050	%
Proposed maximum recycled material ratio	25	%
Hopper temperature	20 to 50	°C
Barrel rear temperature	230 to 240	°C
Barrel middle temperature	235 to 250	°C
Barrel front temperature	235 to 250	°C
Nozzle temperature	240 to 260	°C
Processing (melt) temperature	235 to 260	°C
Mold temperature	20 to 55	°C
Injection speed	Moderate-Fast
Back pressure	0.00 to 0.345	MPa

Notes
1. Typical properties: these are not to be construed as specifications.
2. Die C
3. 10°C/min
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