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In new structures and large public areas, fire protection has become a key consideration in selecting materials. Especially in locations with dense populations, such as exterior curtain walls, interior design, and transport hubs. Fire rating of a material has direct implications on both human safety and acceptance criteria for the project. As a leading aluminum composite panels manufacturer, Shinkwang is aware that customers always ask the same question: How do A2 and B1 fireproof aluminum composite panels differ? Which one do I use in my project? In this article, we will give you an in-depth explanation of the definitions, performance differences, and application recommendations of the two grades to help you make a quick purchase decision.
Definition of Fireproof Aluminum Composite Panel Grades
Before purchasing fireproof aluminum composite panels, it’s important to understand the fire rating classification standards. While testing methods used may vary slightly across different countries and regions, the most common fire ratings in China and most export markets are A2 and B1.
A2-Grade Fireproof Aluminum Composite Panels
According to the GB8624 “Classification of Combustion Performance of Building Materials and Products” standard, A2-grade aluminum composite panels are non-combustible. They only produce a small amount of combustion products at high temperatures, but do not support combustion.
The core material is primarily composed of inorganic minerals (such as aluminum hydroxide and magnesium hydroxide) and produces very little smoke during combustion.
B1-Grade Fireproof Aluminum Composite Panels
B1-grade aluminum composite panels are flame-retardant and will burn slowly when exposed to open flames or high temperatures, but will extinguish themselves when removed from the flame, preventing the spread of fire.
The core material is flame-retardant modified polyethylene (PE) or a blend of some inorganic materials.
Performance Comparison
Different materials can vary in fire resistance, weight, and workability. Understanding these differences can help buyers and project managers find the right balance between safety and cost.
| Performance Indicators | A2 Fireproofing ACP | B1 Fireproofing ACP |
| Fire Resistance | Nearly non-combustible, effectively prevents the spread of fire, high fire resistance limit. | Low smoke production may produce small amounts of harmful gases. |
| Smoke and Toxicity | Extremely low smoke production, no noticeable harmful gases. | Low smoke production, may produce small amounts of harmful gases. |
| Weight | High core density, slightly heavier. | Low core density, lighter. |
| Processing | High hardness, slightly challenging to process. | Good processing flexibility, suitable for complex shapes. |
| Price | Relatively high cost | high cost-effectiveness |
| Applicable Standards | Suitable for locations with the highest fire protection rating requirements. | Meets most building fire protection code requirements. |
Application Comparison
For aluminum composite panels with different fire protection ratings, the choice is not a “higher is better” approach. Instead, the choice should be based on the project’s nature, budget, and regulatory requirements.
Applicable Locations for A2-Grade Fireproof ACPs
- Exterior curtain walls of super-high-rise buildings
- Public transportation hubs such as airports, subways, and train stations
- Buildings with high traffic volume and strict fire protection requirements, such as hospitals and schools
- High-end commercial complexes and landmark buildings
Applicable Locations for B1-Grade Fireproof ACPs
- Exterior walls of general commercial buildings
- Exterior facades of low- and mid-rise residential buildings
- Interior ceilings, partitions, and background walls
- Temporary structures such as advertising signs and exhibition panels
How to Choose the Right Fireproof Aluminum Composite Panel
When selecting a fire protection rating, contractors should consider both regulatory requirements and balance cost and performance. The following suggestions are provided for your reference.
Regulatory Priority: If the local regulations or bidding documents require A2, an A2-grade fireproof ACP must be selected.
High-risk Areas: For example, high-rise facades and public transportation hubs should choose A2 to maximize safety.
Cost-Controlled Options: For general commercial buildings and indoor applications, B1 fully meets fire protection regulations and offers a more cost-effective solution.
Mixed Use: A2-grade fireproofing can be used in critical fire-proof areas and B1-grade fireproofing in other areas of a project, achieving a win-win for both safety and cost.
Conclusion
When selecting building materials, fire rating is more than just a number; it’s crucial for project safety and longevity. Shingkwang has a proven production process for both A2-grade and B1-grade fireproof aluminum composite panels. Contact us now for free samples, technical specifications, and a competitive wholesale quote, and let us help you choose the safest, most cost-effective ACP solutions for your next project.
