A2/B1 fire-resistant aluminum composite panel utilizes special flame-retardant core material. According to fire ratings, ACP panels are categorized into two types: A2 and B1. It is essential to select panels in strict accordance with the fire protection standards of building materials.
1. Different core materials:
- B1 grade plastic core material contains 50%-55% flame retardant (Aluminum Oxide and Magnesium Oxide).
- A2 grade plastic core contains 88%-90% flame retardant (Aluminum Hydroxide and Magnesium Hydroxide).
2. Fireproof performance:
- B1 Fireproof panel: Starts to burn after 5 minutes of continuous ignition; extinguishes 10 seconds after removing the flame.
- A2 Fireproof panel: Starts to burn after 20 minutes of continuous ignition; extinguishes immediately after removing the flame.