Models	EPC6910 / EPC6906
Product Type	Thermoplastic LSZH / HFFR communication-cable sheathing compounds
Primary Application	Communication / telecom / data cable outer sheath
CPR Positioning	Both grades are for Cca-target communication cable constructions
EPC6910 Positioning	Standard Cca grade with balanced mechanical and smoke-performance profile
EPC6906 Positioning	Higher flame-retardant Cca grade with oxygen index 46% and higher elongation
Shared Features	0 ppm halogen • -25°C impact Pass • 150°C thermal shock Pass • thermoplastic extrusion
Processing	Conventional PVC/PE cable extrusion equipment; no irradiation

Product Overview

EPC6910 and EPC6906 are CPR Cca LSZH Communication Cable Compound developed for communication, telecom and data cable outer jackets designed around CPR Cca fire-performance requirements. Both grades are thermoplastic LSZH / HFFR materials and can be processed on conventional cable extrusion equipment without post-extrusion irradiation.

Within this Cca material pair, EPC6910 is positioned as the standard Cca grade with a balanced mechanical and smoke-performance profile, while EPC6906 is the higher flame-retardant Cca grade. EPC6906 has a typical oxygen index of 46%, compared with 44% for EPC6910, and also provides higher elongation. The final grade should be selected according to the finished-cable construction, flame-retardant margin, mechanical requirements and processing priorities.

Why Choose EPC6910 or EPC6906?

1. Two Cca Grades for Different Priorities

Both grades support Cca-target communication cable constructions, but they are differentiated by performance priorities rather than by CPR class.

2. EPC6910 - Balanced Standard Cca Grade

EPC6910 combines 14.2 MPa tensile strength, 205% elongation and lower smoke-density values in the supplied data, making it a balanced starting point for Cca-target communication cable designs.

3. EPC6906 - Higher Flame-Retardant Cca Grade

EPC6906 provides a higher oxygen index of 46% and is the preferred route when additional flame-retardant margin is a key project priority.

4. Low Smoke Zero Halogen

Both grades are LSZH / HFFR outer-sheath materials with typical halogen content of 0 ppm.

5. Thermoplastic Processing

Both materials are processed by conventional thermoplastic cable extrusion without electron-beam irradiation.

6. Communication / Data Cable Focus

The pair is intended for communication, telecom, data, network and signal cable outer-jacket applications requiring a Cca-target material route.

Typical Applications

Communication cable outer jackets
Telecom cable sheathing
Data cable outer jackets
Network and signal cable jackets
LSZH / HFFR communication cables targeting CPR Cca
Indoor communication infrastructure requiring higher fire-performance targets

Technical Data - EPC6910

Test Item	Typical Value
Density	1.55 g/cm³
Melt Index	4.2 g/10 min
Tensile Strength	14.2 MPa
Elongation at Break	205%
Aging Test	110°C × 168 h
Tensile Strength after Aging	15.8 MPa
Elongation after Aging	179%
Oxygen Index	44%
Smoke Density - Flaming	50
Smoke Density - Non-Flaming	174
Toxicity Index	0.8
Hardness	Shore A 97
High-Temperature Pressure Test	90°C × 4 h
Thermal Deformation	22%
Low-Temperature Impact @ -25°C	Pass
Thermal Shock @ 150°C	Pass
Halogen Content	0 ppm
pH	≥ 6.3
Conductivity	≤ 0.6 μS/mm
Volume Resistivity	1.2 × 10¹² Ω·m
Gasoline Immersion, 23°C × 20 h	11% diameter change
Diesel Oil Immersion, 23°C × 20 h	12% diameter change
Engine Oil Immersion, 50°C × 20 h	11% diameter change
Power Steering Fluid, 50°C × 20 h	25% diameter change
Transmission Oil, 50°C × 20 h	21% diameter change
Battery Acid Resistance, 90°C × 48 h	Pass

Technical Data - EPC6906

Test Item	Typical Value
Density	1.47 g/cm³
Melt Index	7.7 g/10 min
Tensile Strength	11.2 MPa
Elongation at Break	240%
Aging Test	110°C × 168 h
Tensile Strength after Aging	12.9 MPa
Elongation after Aging	210%
Oxygen Index	46%
Smoke Density - Flaming	122
Smoke Density - Non-Flaming	199
Toxicity Index	1.0
Hardness	Shore A 96
High-Temperature Pressure Test	90°C × 4 h
Thermal Deformation	10%
Low-Temperature Impact @ -25°C	Pass
Thermal Shock @ 150°C	Pass
Halogen Content	0 ppm
pH	≥ 5.8
Conductivity	≤ 4.8 μS/mm
Volume Resistivity	4.2 × 10¹² Ω·m
Gasoline Immersion, 23°C × 20 h	11% diameter change
Diesel Oil Immersion, 23°C × 20 h	12% diameter change
Engine Oil Immersion, 50°C × 20 h	11% diameter change
Power Steering Fluid, 50°C × 20 h	25% diameter change
Transmission Oil, 50°C × 20 h	21% diameter change
Battery Acid Resistance, 90°C × 48 h	Pass

Recommended Extrusion Conditions

Zone	Zone 1	Zone 2	Zone 3	Zone 4	Zone 5	Neck	Head	Mould
Temperature	100°C	110°C	125°C	135°C	150°C	155°C	160°C	165°C

Processing Guidelines

Both EPC6910 and EPC6906 can be processed on conventional PVC/PE cable extrusion equipment.
Recommended profile: 100°C / 110°C / 125°C / 135°C / 150°C / 155°C / 160°C / 165°C.
Keep melt temperature below approximately 165°C and do not exceed 175°C during extrusion.
Optimize die design, screw compression, cooling and line speed according to cable diameter, sheath thickness and surface requirement.
For Cca-target projects, final CPR performance must be verified on the complete finished cable construction.
If both grades appear technically suitable, run comparative extrusion and finished-cable trials before final qualification.

How to Choose Between EPC6910 and EPC6906

Selection Point	EPC6910	EPC6906	Selection Note
Grade Positioning	Standard Cca grade	Higher flame-retardant Cca grade	Same CPR route; different performance focus
Oxygen Index	44%	46%	EPC6906 provides more flame-retardant margin
Tensile / Elongation	14.2 MPa / 205%	11.2 MPa / 240%	EPC6910 higher tensile; EPC6906 higher elongation
Main Priority	Balanced mechanical / smoke profile	Higher flame-retardant margin / higher elongation	Select according to finished-cable priorities

EPC6910 vs. EPC6906

Selection Point	EPC6910	EPC6906
CPR Positioning	Cca-target route	Cca-target route
Grade Positioning	Standard Cca grade	Higher flame-retardant Cca grade
Oxygen Index	44%	46%
Tensile Strength	14.2 MPa	11.2 MPa
Elongation	205%	240%
Smoke Density - Flaming	50	122
Smoke Density - Non-Flaming	174	199
Hardness	Shore A 97	Shore A 96
Low Temperature	-25°C impact Pass	-25°C impact Pass
Thermal Shock	150°C Pass	150°C Pass
Choose When	Balanced mechanical / smoke-performance profile is preferred	Higher flame-retardant margin and elongation are prioritized

Products Description

For faster selection between EPC6910 and EPC6906, please provide:

Communication / telecom / data cable type and end use
Required CPR class
Finished cable structure and overall diameter
Sheath thickness
Required smoke and halogen performance
Tensile / flexibility priorities
Operating and installation temperature
Extrusion equipment and line speed
Color, surface requirement and estimated volume
Whether you would like comparative samples of both grades

FAQ

Q: What are EPC6910 and EPC6906?

A: They are CPR Cca LSZH Communication Cable Compounds for communication, telecom and data cable outer-jacket applications.

Q: Do EPC6910 and EPC6906 serve the same CPR route?

A: Yes. Both grades are positioned for communication cable constructions targeting CPR Cca.

Q: What is the main difference between EPC6910 and EPC6906?

A: EPC6910 is the standard Cca grade with a balanced mechanical and smoke-performance profile, while EPC6906 is the higher flame-retardant Cca grade.

Q: Which grade has the higher oxygen index?

A: EPC6906 has a typical oxygen index of 46%, compared with 44% for EPC6910.

Q: Which grade has higher elongation?

A: EPC6906 has 240% elongation at break, compared with 205% for EPC6910.

Q: Which grade has higher tensile strength?

A: EPC6910 has 14.2 MPa tensile strength, compared with 11.2 MPa for EPC6906.

Q: When should I choose EPC6906?

A: Choose EPC6906 when the Cca-target cable design places greater emphasis on flame-retardant margin and higher oxygen index.

Q: When should I choose EPC6910?

A: Choose EPC6910 when a balanced Cca material profile with higher tensile strength and lower smoke-density values is preferred.

Q: Do the compounds themselves carry CPR Cca classification?

A: CPR classification applies to the complete finished cable. Final Cca classification must be confirmed through finished-cable testing.

Q: Can both grades be sampled for comparison?

A: Yes. Comparative extrusion and finished-cable trials are recommended when both grades appear suitable.

Need a CPR Cca LSZH Communication Cable Compound?

Tell us your cable construction, flame-retardant target, jacket thickness, mechanical priorities and extrusion conditions. We can help you select between EPC6910 and EPC6906.

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