Graphite Grade – S – Flame-Retardant Panels

Product Introduction

Graphite Grade–S is a flame-retardant EPS foam that reaches a Class B1 fire rating (GB8624-2012). The panels and molded products made from graphite expanded polystyrene are self-extinguishing, which is kind of a relief when you think about safety in buildings or storage. S-grade fire retardant foam sheet’s thermal conductivity sits around 0.033 W/(m·K), so it keeps heat in—or out—better than your average foam. After foaming, density usually lands between 15 and 35 kg/m³, giving a nice high expansion ratio while staying fairly sturdy. Whether for insulation or safe packaging, S-grade graphite EPS insulation material is the best choice.

Product Characteristics 

• Color and material: Uniform black or dark gray. Made from high-quality graphite EPS beads, using modern processes for consistent density and surface.
• Fire resistance: Reaches Class B1 (GB8624-2012), self-extinguishing and hard to burn. Provides reliable safety without extra bulk.
• Thermal insulation: Low thermal conductivity around 0.033 W/(mK); this S-grade fire retardant foam sheet gives better heat retention than standard EPS foam panels.
• Lightweight & strong: With a high expansion ratio, Black expanded polystyrene panels’ density after foaming is 15–35 kg/m³, and they stay stable under pressure.
• Good molding and fusion: Graphite EPS insulation beads bond well in molds, making fire retardant foam sheets or black packing foam smooth and durable.
• Eco-friendly efficiency: Lower material use for the same insulation effect, reduces waste, and is easier to handle.

Product Advantages

• Light and handy: Graphite EPS beads and black expanded polystyrene are surprisingly light.
• Cost-effective: Flame retardant EPS foam or fire retardant foam sheet provides excellent performance in insulation and fire resistance.
• Durability: Black packing foam, graphite EPS insulation panels, or EPS flame retardant sheets slide into manual or automatic processes pretty smoothly. Machines like them; people like them even more.
• Stability: Flame retardant polystyrene beads and EPS fire retardant panels bounce back nicely. No sagging, no weird dents after moving them around.
• Eco bonus: Using graphite expanded polystyrene or custom black foam packing material means less raw material for the same effect.

Application Fields

• Fireproof insulation panels: Graphite EPS insulation and flame retardant EPS foam are widely used in walls, ceilings, and floors where safety matters.
• Packaging for delicate goods: Black expanded polystyrene foam material provides a safe environment for protecting electronics, glassware, or other delicate items during transportation.
• Construction cladding: Fire retardant foam sheets and EPS flame retardant panels are ideal for exterior or interior cladding.
• Custom foam solutions: S-grade fire retardant foam sheets can be tailored for odd shapes or special products. Flexible enough to match unusual designs without breaking apart.