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| Customization: | Available |
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| Carrier: | EPS |
| Color: | White or Black |
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Polystyrene, Expanded (EPS) is a versatile synthetic polymer, derived from the monomer styrene, expanded using foaming agents. It is odorless and appears as rigid, closed-cell foam, typically white in color. The material is insoluble in water and exhibits excellent thermal insulation and cushioning properties. Expanded Polystyrene is widely used in packaging, insulation, and food service products due to its lightweight nature and protective qualities. It is manufactured from petroleum-based styrene through a process of polymerization and expansion, tailored for various commercial and industrial applications.
Chemical Name: Polystyrene, Expanded
Common Name: EPS Foam
CAS Number: 9003-53-6

Specification Sheet: Expanded Polystyrene (EPS)
| Property Category | Parameter | Standard Value | Test Method | Remarks |
|---|---|---|---|---|
| General Properties | Material | Expanded Polystyrene | - | White, rigid foam |
| Common Abbreviation | EPS | - | - | |
| CAS Number | 9003-53-6 | - | - | |
| Physical Properties | Density (Nominal) | 10 kg/m³, 15 kg/m³, 20 kg/m³, 30 kg/m³ | ISO 845 | Custom densities available |
| Thermal Conductivity | 0.032 - 0.038 W/(m·K) | ISO 8301 | Excellent insulation | |
| Water Absorption (by volume) | < 4.0 % | ISO 2896 | Closed-cell structure | |
| Compressive Strength (at 10% deformation) | ~50 kPa (10 kg/m³) ~75 kPa (15 kg/m³) ~100 kPa (20 kg/m³) ~150 kPa (30 kg/m³) |
ISO 844 | Strength increases with density | |
| Mechanical Properties | Flexural Strength | 0.15 - 0.40 N/mm² | ISO 1209 | - |
| Tensile Strength | 0.10 - 0.30 N/mm² | ISO 1926 | - | |
| Thermal Properties | Service Temperature | -50 °C to +75 °C | - | Short-term peaks up to 100°C |
| Flame Retardant Grade | Available (FR Grade) | - | Self-extinguishing, meets building codes | |
| Other Characteristics | Chemical Resistance | Resistant to water, saline solutions, alkalis; Poor resistance to organic solvents. | - | - |
| Applications | Packaging, Construction Insulation, Food Service (if compliant) | - | - | |
| Standard Dimensions | Block Size (L x W) | 2000mm - 6000mm (customizable) | - | - |
| Thickness Range | 20mm - 1000mm |

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A: Yes, we can supply free sample, you pay for the freight charge only.