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D6262-23 – Standard Test Method Technical Guide
📐 Specifications and Classification for PAEK Shapes
ASTM D6262-23 establishes requirements for poly(aryl ether ketone) (PAEK) basic shapes manufactured by extrusion, compression molding, or injection molding. PAEK is a family of semi-crystalline thermoplastics with alternating ketone and ether groups in the molecular backbone. The specification covers sheet, plate, rod, and tubular bar. Plate is defined as flat stock 1/4 in. (6.4 mm) or greater in thickness. The classification system in Section 4 allows identification of particular characteristics for specialized applications and permits the use of key clad plastics.
⚙️ Test Methods and Property Requirements
Mechanical properties are determined using standard ASTM methods. All specimens must be conditioned per Practice D618 at 23±2°C and 50±10% relative humidity for at least 40 hours. Tensile properties are measured per D638, flexural properties per D790, and Izod pendulum impact resistance per D256. Values are reported in inch-pound units as the standard, with SI units provided for reference. The table below lists typical property requirements for PAEK shapes.
| 🟦 Property | 📏 Test Method | 📐 Value (in-lb) | 🎯 Value (SI) |
|---|---|---|---|
| Tensile Strength | D638 | 14,000 psi | 96 MPa |
| Flexural Modulus | D790 | 600,000 psi | 4.1 GPa |
| Izod Impact (Notched) | D256 | 1.0 ft·lb/in | 53 J/m |
📊 Dimensional and Workmanship Standards
Dimensional tolerances for rod diameters, sheet thicknesses, and tubular bar sizes are specified to ensure consistency. Workmanship requires shapes to be uniform and free from defects such as voids, cracks, or contamination. The classification system in Section 4, referencing D4000 and D8033, enables selection of appropriate material grades based on end-use requirements.
💡 Tip: Condition PAEK test specimens per D618 at 23±2°C and 50±10% RH for at least 40 hours to ensure reproducible results.
⚠️ Warning: PAEK materials require processing temperatures often exceeding 400°C (752°F). Use appropriate personal protective equipment and ventilation to prevent thermal degradation and exposure to hazardous fumes.
❓ Frequently Asked Questions
🔍 What shapes are covered by ASTM D6262?
The specification covers extruded, compression molded, and injection molded sheet, plate, rod, and tubular bar of PAEK.
💡 How are PAEK materials classified?
Classification per Section 4 uses a system consistent with D4000 and D8033 to specify properties for specialized applications.
⚡ What test methods are required for property verification?
Key methods include D638 for tensile, D790 for flexural, and D256 for Izod impact, with conditioning per D618.
📌 Is there an ISO equivalent to this standard?
No, there is no known ISO equivalent to ASTM D6262 (see Note 1).