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D4313-22 – Standard Test Method Technical Guide
This standard, designated as ASTM D4313-22, specifies crosslinked chlorinated polyethylene (CPE) compounds for use as jackets on electrical cables. It covers three service categories: general-purpose, heavy-duty, and extra-heavy-duty. The jacket materials are not recommended for installation below –25 °C. All values are in inch-pound units, with SI equivalents for reference.
📋 Scope and Application
The specification applies to outer coverings for electrical cables requiring durability and resistance to environmental stress. It is important to note that these compounds are crosslinked, providing enhanced thermal and mechanical properties. Testing and sampling must follow ASTM D470 methods.
📏 Physical Property Requirements
Crosslinked jackets must meet the physical property requirements detailed in Table 1. Tensile strength and elongation are tested initially and after oil immersion, using specific fluids per product standards.
| 🟦 Property | 📏 General-Purpose | 📐 Heavy-Duty | 🎯 Extra-Heavy-Duty |
|---|---|---|---|
| Tensile Strength, min (psi) | 1500 | 1800 | 2000 |
| Elongation at Rupture, min (%) | 250 | 200 | 180 |
| Oil Immersion – Tensile Retention (%) | 70 | 70 | 70 |
| Oil Immersion – Elongation Retention (%) | 60 | 60 | 60 |
The values shown are representative; consult the full standard for exact requirements.
☀️ Sunlight and Weather Resistance
When specified, jackets must pass sunlight and weather resistance tests according to Table 2. Use accelerated weathering apparatus as per ASTM D1499 and G153, with performance criteria for tensile and elongation retention.
| 🟦 Exposure Condition | ⚡ Performance Requirement |
|---|---|
| 720 hours accelerated weathering | Tensile strength retention ≥ 60% |
| 720 hours accelerated weathering | Elongation retention ≥ 50% |
⚠️ Warning: The weather resistance test is only applicable if required by the cable specification. Improper exposure can lead to material degradation; always adhere to standard conditions.
💡 Tip: For optimal performance, use CPE compounds with UV stabilizers. Verify fluid type for oil immersion tests as per product standards to ensure compliance.
❓ Frequently Asked Questions
🔍 What is the scope of ASTM D4313-22?
It covers crosslinked CPE jackets for general-purpose, heavy-duty, and extra-heavy-duty service on electrical cables.
💡 Where are the physical property requirements listed?
In Table 1 of the standard, including tensile strength and elongation after oil immersion.
⚡ What is the low-temperature limit for these jackets?
Installation is not recommended below –25 °C as stated in the scope.
📌 How is weather resistance tested?
Following ASTM D470 methods, with accelerated exposure per D1499 and G153, per Table 2 requirements.