Grade	Material Route	Cable Layer / Role	Key Positioning
EPC9258-C	Cross-linked XLPO	Charging-cable compound / project-specific layer	Low hardness, good hand feel; 2PfG 1908 / CQC 1103-oriented route
STCE68501	TPE	Insulation	Flexible TPE insulation; 401% elongation; 25.2 N/mm tear strength
STCE68001	TPE	Sheath / Jacket	Charging-cable TPE sheath; crack resistance and solvent resistance
STCE69001	TPE	Insulation	TPE insulation with strong electrical insulation and 550% elongation

Product Overview

This EV charging cable compound family combines two distinct polymer routes in one application-focused selection page: EPC9258-C is an irradiation-crosslinked XLPO compound for charging-cable applications, while STCE68501, STCE68001 and STCE69001 are thermoplastic TPE grades for insulation or sheathing.

The materials should not be treated as interchangeable. EPC9258-C is selected when a cross-linked XLPO route is preferred; the STCE grades are selected when thermoplastic TPE processing, flexibility and cable-layer function are the main drivers. The TPE family includes dedicated insulation and sheath options, allowing customers to build a clearer material system around the actual charging-cable construction.

Choose by Material Route & Cable Layer

Grade	Material Route	Cable Layer / Role	Key Positioning
EPC9258-C	Cross-linked XLPO	Charging-cable compound / project-specific layer	Low hardness, good hand feel; 2PfG 1908 / CQC 1103-oriented route
STCE68501	TPE	Insulation	Flexible TPE insulation; 401% elongation; 25.2 N/mm tear strength
STCE68001	TPE	Sheath / Jacket	Charging-cable TPE sheath; crack resistance and solvent resistance
STCE69001	TPE	Insulation	TPE insulation with strong electrical insulation and 550% elongation

Series Highlights

One charging-cable page covering both cross-linked XLPO and thermoplastic TPE material routes
Clear insulation vs sheath selection for the TPE family
EPC9258-C provides the irradiation-crosslinked XLPO option
STCE68501 and STCE69001 provide two TPE insulation choices with different mechanical / electrical profiles
STCE68001 is the dedicated TPE sheath / jacket grade
All four grades pass -40°C low-temperature winding in the technical data
2PfG 1908 and CQC 1103 are key application references for the charging-cable family

Step 1 - Select the Material Platform

Selection Question	Cross-Linked XLPO - EPC9258-C	TPE - STCE68501 / 68001 / 69001
Processing route	Extrusion + electron-beam irradiation	Direct thermoplastic extrusion
Main reason to choose	Cross-linked structure and XLPO performance route	Flexibility, soft hand feel and thermoplastic processing
Cable-layer selection	Confirm project construction	Dedicated insulation and sheath grades available
Best RFQ approach	Confirm irradiation and finished-cable standard	Confirm insulation/sheath role, hardness and flexibility

Step 2 - Select the TPE Cable Layer

Need	Recommended Grade	Why
TPE insulation	STCE68501	Flexible insulation with 12.9 MPa tensile, 401% elongation and 25.2 N/mm tear strength
TPE insulation with higher elongation / electrical resistivity	STCE69001	14 MPa tensile, 550% elongation and 4.1 × 10^16 Ω·cm volume resistivity
TPE outer sheath / jacket	STCE68001	Dedicated charging-pile cable sheath with crack and solvent resistance positioning

Where These Materials Are Used

EV charging-pile cables
EV charging-gun / charging-connector cable assemblies
AC / DC charging cable constructions where the selected grade matches the applicable specification
Flexible charging cables requiring TPE insulation or sheathing
Cross-linked charging-cable constructions using EPC9258-C
Indoor and outdoor charging-cable projects subject to final finished-cable validation

Recommended Extrusion Process Temperature

EPC9258-C - Cross-Linked XLPO Technical Data

Test Item	EPC9258-C	Test Method
Density	1.38 g/cm³	ISO 1183-1
Melt Index	9 g/10 min (150°C / 21.6 kg)	ISO 1133 (b)
Tensile Strength	13.3 MPa	IEC 60811-1-1
Elongation at Break	210%	IEC 60811-1-1
Heat Aging	158°C × 240 h	IEC 60811-1-2
Tensile Strength after Aging	15.8 MPa	IEC 60811-1-2
Elongation after Aging	177%	IEC 60811-1-2
Oxygen Index	32%	ISO 4589-2
Hardness	Shore A 85	ASTM D2240
Smoke Density - Flaming	66	ASTM E-662
Smoke Density - Non-Flaming	189	ASTM E-662
Toxicity Index	1	NES 713
High-Temperature Pressure	120°C × 4 h	IEC 60811-3-1
Thermal Deformation	20%	IEC 60811-3-1
Low-Temperature Winding @ -40°C	Pass	IEC 60811-1-4
Thermal Shock @ 150°C × 1 h	No Crack	-
Halogen Content	0 ppm	IEC 60754
Flame Retardancy	V0	-
pH (min.)	6.1	IEC 60754
Conductivity (max.)	0.8 μS/mm	IEC 60754
Volume Resistivity	1.5 × 10¹² Ω·m	IEC 60093
Hot Set @ 200°C × 15 min	55%	IEC 60811-2-1
Permanent Deformation	5%	IEC 60811-2-1

TPE Charging Cable Grades - Technical Data

Test Item	STCE68501	STCE68001	STCE69001	Test Method / Basis
Density	1.02 g/cm³	1.08 g/cm³*	1.02 g/cm³	ISO 1183-1 (68501/68001); ASTM D792 (69001)
Melt Index	7.6 g/10 min (230°C/10kg)	8.6 g/10 min (230°C/10kg)	5.9 g/10 min	ISO 1133(b) (68501/68001); ASTM D1238 (69001)
Tensile Strength	12.9 MPa	12.5 MPa	14.0 MPa	IEC 60811-1-1 (68501/68001); ASTM D412 (69001)
Elongation at Break	401%	413%	550%	IEC 60811-1-1 (68501/68001); ASTM D412 (69001)
Tear Strength	25.2 N/mm	25.6 N/mm	-	Charging-cable grade data
Heat Aging	136°C × 168 h	136°C × 168 h	136°C × 168 h	IEC 60811-1-2 (68501/68001); ASTM D573 (69001)
Tensile after Aging	11.4 MPa	10.8 MPa	13.5 MPa	IEC 60811-1-2 (68501/68001); ASTM D573 (69001)
Elongation after Aging	365%	372%	495%	IEC 60811-1-2 (68501/68001); ASTM D573 (69001)
Oxygen Index	26%	26%	-	ISO 4589-2
Hardness	Shore A 86	Shore A 81	Shore A 90	ASTM D2240
High-Temperature Pressure	90°C × 1 h	90°C × 1 h	-	IEC 60811-3-1
Thermal Deformation	32%	32%	-	IEC 60811-3-1
Low-Temperature Test @ -40°C	Pass	Pass	No Crack	IEC 60811-1-4 (68501/68001)
Thermal Shock @ 150°C × 1 h	No Crack	No Crack	-	Charging-cable grade data
Halogen Content	0 ppm	0 ppm	-	IEC 60754
Flame Retardancy	V0	V0	V1 (4.0 mm)	Charging-cable data / UL-94 (69001)
Volume Resistivity	1.2 × 10¹⁴ Ω·m	3.5 × 10¹⁴ Ω·m	4.1 × 10¹⁶ Ω·cm	IEC 60093

Grade Performance Highlights

EPC9258-C: performance profile includes 2PfG 1908 and CQC 1103, lower hardness and good hand feel for EV charging cable applications.
STCE68501 and STCE68001: performance profile includes 2PfG 1908 and CQC 1103; both are described as lower-density, better-hand-feel alternatives to EPC9258-C for charging cables.
STCE69001: dedicated insulation positioning, with good heat resistance, excellent electrical insulation and good processability highlighted .

Chemical & Environmental Validation

Performance Item	EPC9258-C	STCE68501	STCE68001	Reference
Gasoline resistance	Finished cable OD change ≤15%; no breakdown after test	Same family requirement	Same family requirement	JASO D618
Diesel resistance	Finished cable OD change ≤15%; no breakdown after test	Same family requirement	Same family requirement	JASO D618
Engine-oil resistance	Finished cable OD change ≤15%; no breakdown after test	Same family requirement	Same family requirement	JASO D618
Acid resistance @ 23°C × 168 h	Pass	Pass	Pass	GB/T 2951.21
Alkali resistance @ 80°C × 168 h	Pass	Pass	Pass	GB/T 2951.21
High-temp resistance @ 175°C × 6 h	Pass	-	-	JASO D618

Processing Routes

EPC9258-C - Cross-Linked XLPO

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

Can be processed on conventional PVC/PE cable extrusion equipment.
Recommended irradiation dose: 10–12 MRad.
Control melt temperature below approximately 165°C and do not exceed 175°C.
Low-compression screw / head with approximately 1:1–1:2 compression ratio is recommended as a starting point.

STCE TPE Grades - Thermoplastic Route

Zone	1	2	3	4	Neck	Head	Die
Temperature	170±10°C	180±10°C	190±10°C	200±10°C	200±10°C	190±10°C	190±10°C

No irradiation cross-linking step is required for the TPE grades.
Actual settings should be optimized according to line speed and cable surface quality.
Keep the material clean, dry and ventilated during storage and transport.
If stored for more than three months at <30°C and ≥60% RH, we recommend drying at 80–90°C for at least 2 hours before use.

RFQ & Material Selection

For faster charging-cable material recommendation, please provide:

Charging-cable type and end application
Applicable standard: 2PfG 1908, CQC 1103, customer / OEM specification or other
Preferred material route: cross-linked XLPO, TPE or open to recommendation
Required cable layer: insulation or sheath / jacket
Conductor size and complete cable construction
Insulation and sheath thickness / finished cable OD
Required flexibility, hardness and hand feel
Heat-aging and low-temperature requirements
Oil, acid, alkali and solvent-resistance requirements
Extrusion equipment; irradiation equipment if XLPO is selected
Required color
Trial quantity and estimated annual demand

Fast Selection Shortcut

Requirement	Recommended Grade
Cross-linked XLPO charging-cable route	EPC9258-C
Flexible TPE insulation	STCE68501
TPE insulation with 550% elongation / stronger electrical-resistivity data	STCE69001
Flexible TPE sheath / jacket	STCE68001
Not sure between XLPO and TPE	Send cable standard + construction + flexibility target for technical evaluation

FAQ

1. Which grade is the cross-linked XLPO option?

EPC9258-C. It requires extrusion followed by electron-beam irradiation.

2. Which grades are TPE?

STCE68501, STCE68001 and STCE69001 are thermoplastic TPE grades.

3. Which TPE grade is used for sheathing?

STCE68001 is the dedicated charging-cable TPE sheath / jacket grade.

4. Which TPE grades are used for insulation?

STCE68501 and STCE69001 are positioned as charging-cable TPE insulation options.

5. What is the difference between STCE68501 and STCE69001?

Both are insulation grades, but STCE69001 has 550% elongation and very high volume-resistivity data ; STCE68501 has detailed tear-strength, oxygen-index and charging-cable family data.

6. Which standards are referenced for the charging-cable family?

The charging-cable material family is designed for cable constructions targeting 2PfG 1908 and CQC 1103 requirements.

7. Do TPE grades require irradiation?

No. They are thermoplastic materials and use a direct extrusion route.

8. Does EPC9258-C require irradiation?

Yes. We recommend 10–12 MRad as the irradiation dose.

9. Can free samples be supplied?

Yes. Samples can be used for extrusion, irradiation where applicable, and finished-cable validation.

Hot Tags: ev charging cable compound, China ev charging cable compound manufacturers, suppliers, factory, automotive and ev cable compounds, crosslinked XLPO charging cable compound, electric vehicle cable insulation compound, EV charging cable compounds, halogen free automotive wire material, JASO D611 cable compound