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HZD2720-EV
HZD2720-EV is an oil-resistant 125°C irradiation cross-linked LSZH compound for EV and rolling-stock cable — passes the single-wire vertical flame test and meets GB 12528.11-2003, with verified oil and diesel immersion performance.
Blue cable compound pellet sample
01 / 02Material — Oil-resistant irradiation cross-linked LSZH polyolefin compound
Overview
HZD2720-EV is a 125°C halogen-free flame-retardant cable compound, colorable, built on a polyolefin base with inorganic flame retardants, antioxidants and lubricants, internally mixed, plasticized and pelletized. It offers outstanding oil resistance and flexibility together with good mechanical strength and elongation, and passes the single-wire vertical flame test.
The grade targets applications with demanding oil exposure — typically rolling-stock and vehicle cable — and satisfies the requirements of GB 12528.11-2003. Oil immersion performance is verified in 20# machine oil (100°C × 70 h) and 0# diesel (70°C × 168 h); see the property table. A factory inspection report for this 125°C polyolefin EV grade is available on request.
Packaging & Storage
Supplied in aluminum-plastic bags with kraft paper lining, 25 kg net per bag. Store in a dry, well-ventilated warehouse.
- Product family
- Materials
- Reference
- HZD2720-EV
- Applications
- 4 documented
- Published data
- 20 rows
Grade qualification
Validate the grade against the cable, process and target standard
Published properties establish the review baseline. Cable construction, processing conditions and a line trial complete the grade decision.
- 01
Define the duty profile
Confirm cable construction, operating temperature, flame class and environmental requirements.
- 02
Review the published data
Match requirements, typical values and test methods to the finished-cable target.
- 03
Run a controlled line trial
Set drying, temperature, screw and irradiation conditions from the grade processing card.
- 04
Approve the production window
Record surface, dimensions, mechanical results and finished-cable tests before volume production.
Inquiry input
Send these four details
- 01Cable construction
- 02Target standard
- 03Color and quantity
- 04Extrusion line details
Technical data
Typical Properties
Review requirement, typical production value and test method together. The official TDS defines the binding supply specification.
- Density
- 1.53 g/cm³
- Tensile strength
- 11.8 MPa
- Elongation at break
- 168 %
- Oxygen index
- 42 %
Typical value
Typical value
Typical value
Typical value
| Property | Unit | Requirement | Typical | Test Method |
|---|---|---|---|---|
| Density | g/cm³ | ≤ 1.60 | 1.53 | GB 1033 |
| Tensile strength | MPa | ≥ 9 | 11.8 | GB 1040 |
| Elongation at break | % | ≥ 125 | 168 | GB 1040 |
| Thermal aging | °C × h | 158 × 168 | 158 × 168 | GB 2951.7 |
| Tensile strength retention after aging | % | ≥ 70 | 107 | GB 2951.7 |
| Elongation retention after aging | % | ≥ 70 | 95 | GB 2951.7 |
| Volume resistivity (20°C) | Ω·m | ≥ 1×10¹² | 5.71×10¹² | GB 1410 |
| Dielectric strength | MV/m | ≥ 25 | 29 | GB 1408 |
| Oxygen index | % | ≥ 35 | 42 | GB 2406 |
| Smoke density (flaming) | — | ≤ 100 | 87 | GB 8323 |
| Smoke density (non-flaming) | — | ≤ 180 | 150 | GB 8323 |
| Oil immersion — tensile change (20# oil, 100°C × 70 h) | % | ≤ 50 | 25 | GB/T 2951.5 |
| Oil immersion — elongation change (20# oil, 100°C × 70 h) | % | ≤ 50 | 11 | GB/T 2951.5 |
| Diesel immersion — tensile change (0# diesel, 70°C × 168 h) | % | ≤ 55 | 35 | GB/T 2951.5 |
| Diesel immersion — elongation change (0# diesel, 70°C × 168 h) | % | ≤ 55 | 18 | GB/T 2951.5 |
| Toxicity index | — | ≤ 5 | 1.8 | NES 713 |
| pH | — | ≥ 4.3 | 6.1 | GB/T 17650.2 |
| Conductivity | μS/mm | ≤ 10 | 2.7 | GB/T 17650.2 |
| Single-wire vertical flame test | — | — | Pass | GB/T 18380.1 / UL 1581 |
| Shore hardness A | — | — | 77 | GB 2411 |
* Typical values are measured on production samples and provided for reference only — they are not a specification guarantee. Request the official TDS for binding limits.
Application & process
Connect the product data to production
Application requirements and processing conditions are reviewed together before sample approval and production supply.
Use cases
Documented applications
- 01EV and new-energy vehicle cable
- 02Rolling stock and locomotive cable (GB 12528.11-2003)
- 03Oil-exposed industrial equipment wiring
- 04Flexible cable insulation and jackets
Process notes
Processing recommendations
- 01Recommended equipment: φ45–150 single-screw extruder, L/D ≥ 20, screen pack 20/80/20 mesh
- 02A dedicated halogen-free screw with compression ratio below 2.5 improves output and surface quality
- 03Temperature profile: feed 110°C / transport 125°C / melting 140°C / die 140–150°C — trim die temperature to wire surface finish
- 04Irradiation dose: 150–180 kGy (15–18 Mrad)
Where it's used
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Inquiry
Send your inquiry for HZD2720-EV
Send your cable standard, target temperature rating and quantity to request HZD2720-EV samples or quotation.
- 01Cable construction
- 02Target standard
- 03Color and quantity
- 04Extrusion line details