PC/ASA Alloy (Polycarbonate / ASA Blend)

UV Resistant & Flame Retardant Plastic for Outdoor and Exterior Components

PC/ASA Alloy is engineered for applications where weather resistance is critical. By blending polycarbonate with ASA (Acrylonitrile Styrene Acrylate), this alloy delivers excellent UV resistance, color retention, and surface stability, while maintaining the toughness and heat resistance of PC.

Compared with PC/ABS, PC/ASA offers significantly better outdoor durability and UV stability, making it a preferred solution for long-term exterior exposure.

Alloy Structure & Weather-Resistant Material Design

PC/ASA is a multi-phase polymer alloy where PC contributes mechanical strength and thermal performance, while ASA provides superior weathering resistance and color stability.

Material Composition Overview

• Polymer System: Polycarbonate + ASA

• Performance Focus: UV resistance & impact stability

• Flame Retardant Options: HB / UL94 V0

• Reinforcement: None (unfilled)

• Optional Additives:

  • UV stabilizer (enhanced)

  • Heat stabilizer

  • Color stabilization system

• Color Options: Light colors, black, customized

This alloy system is optimized for long-term outdoor exposure.

Core Advantages: Weather Resistance Meets Structural Performance

Engineering Advantages

• Excellent UV & Weather Resistance
  Maintains color and surface integrity under long-term sunlight exposure.

• Good Impact Resistance
  Suitable for outdoor and exterior components.

• Improved Heat Resistance vs ASA
  Better thermal performance than ASA alone.

• Stable Dimensional Performance
  Reduced warpage compared to pure PC in outdoor environments.

Manufacturing & Commercial Advantages

• Good surface appearance for visible parts

• Stable injection molding behavior

• Outdoor-grade material without secondary coating

• OEM-approved for exterior applications

Flame Retardant Grades: HB vs UL94 V0

HB Grade

• Basic flame resistance

• Better impact retention

• Cost-effective for non-critical parts

UL94 V0 Grade

• Self-extinguishing behavior

• Suitable for electrical safety components

• Halogen-free options available

Typical Application Areas

Outdoor & Infrastructure

• Outdoor enclosures

• EV charging station housings

• Communication equipment covers

Automotive Exterior

• Mirror housings

• Exterior trim components

• Sensor covers

Electrical & Industrial

• Outdoor electrical boxes

• Weather-exposed control housings

 Processing Performance & Injection Molding Guidelines

PC/ASA requires controlled processing conditions to ensure optimal surface and UV performance.

• Melt Temperature: 250–280 °C

• Mold Temperature: 80–100 °C

• Drying: 110–120 °C for 3–4 hours

• Injection Speed: Medium

• Shrinkage: 0.3–0.6%

Proper drying is essential to maintain impact strength and surface quality.

Technical Specification – PC/ASA Alloy (HB / V0)

OEM / ODM Customization Capabilities

• HB / UL94 V0 flame ratings

• Enhanced UV & weather resistance

• Color retention–optimized grades

• Outdoor long-life formulations

FAQ

Q1: Why choose PC/ASA instead of PC/ABS?
PC/ASA offers significantly better UV and weather resistance for outdoor use.

Q2: Is PC/ASA suitable for outdoor electrical enclosures?
Yes, it is widely used for weather-exposed electrical housings.

Q3: What is the difference between HB and V0 grades?
HB provides basic flame resistance, while V0 meets strict self-extinguishing requirements.

Q4: Does PC/ASA maintain color under sunlight?
Yes, ASA provides excellent color stability under UV exposure.

Q5: Can PC/ASA be customized for OEM applications?
Yes, UV performance, flame rating, and appearance can be tailored.