PAI 4203 grade

Description

1. Product Overview

PAI 4203 Grade is an unreinforced, general-purpose polyamide-imide (PAI) thermoplastic resin offering the highest toughness and impact strength of all Torlon PAI grades. Its primary industrial use is for precision structural and bearing components requiring exceptional strength at temperatures up to 275°C (525°F), along with outstanding wear, creep, and chemical resistance. The key value proposition is unparalleled impact resistance (142 J/m), maximum elongation, high compressive strength, and superior electrical insulation properties. Strategically, this grade is critical for aerospace, automotive, semiconductor, and oil/gas applications where failure under extreme thermal or mechanical stress is unacceptable.

2. Key Specifications & Technical Characteristics

• Chemical composition: Unreinforced, lubricated, pigmented polyamide-imide (PAI) resin

• Purity level/Grade: General-purpose unfilled Torlon® 4203 (extruded grade)

• Physical characteristics:

  • Form: Extruded solid (sheets, rods, custom profiles)

  • Specific Gravity: 1.41 g/cc

  • Impact Resistance: 142 J/m (highest among Torlon grades)

  • Thermal Conductivity: 0.26 W/mK (lowest among Torlon grades)

  • Elongation: Highest of all Torlon PAI grades

  • Compressive Strength: Excellent

  • Dimensional Stability: Extremely high; only 4% tensile stress loss after 2000h at 200°C

  • Flammability: UL94-V0 (highest class)

  • UV/Gamma/X-ray Resistance: Extremely resistant

• Packaging options: Extruded sheets, rods, or custom machined parts; bulk resin available upon request

• Shelf life: Indefinite when stored dry at ambient conditions; no documented degradation

3. Core Industrial Applications

PAI 4203 outperforms alternatives due to the highest strength/stiffness of any thermoplastic up to 275°C, ultra-high impact resistance, and extreme dimensional stability.

4. Competitive Advantages

• Quality consistency: Unreinforced general-purpose grade with standardized mechanical properties across manufacturers

• Supply reliability: Widely available from global suppliers (Syensqo/Solvay, KTK, Ensinger, Hony Plastic)

• Logistics capability: Extruded forms ship efficiently; bulk resin compatible with standard industrial logistics

• Price competitiveness: General-purpose grade offers best value for high-performance applications vs. filled/modified PAI variants

• Sustainability: UL94-V0 flame retardant; UV/gamma/X-ray resistant; long service life reduces waste

• Technical support: Full technical data sheets available (ASTM-tested properties)

This product positions as a strategic sourcing decision for mission-critical components.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT

• Loading capacity: 20 MT per container (full container load)