WILLSTRONG® SSHP Stainless Steel Honeycomb Panel
Lightweight stainless steel honeycomb panels with high rigidity, fire-rated performance, and custom finishes.
Product Introduction
Combining the durability of stainless steel with the lightweight structural advantages of honeycomb technology, WILLSTRONG® SSHP Stainless Steel Honeycomb Panel is engineered for modern architectural facades and demanding building applications. Its composite structure consists of corrosion-resistant stainless steel surface sheets bonded to a hexagonal aluminum honeycomb core, delivering an excellent balance of rigidity, weight reduction, dimensional stability, and impact resistance.
Compared with conventional aluminum composite panels (ACP), this stainless steel honeycomb system offers enhanced structural stiffness and strength, making it suitable for large-format architectural surfaces, curved designs, and projects requiring long-term performance. Its stable panel structure helps minimize oil-canning and surface deformation across expansive facade areas while maintaining a refined metallic appearance.
With A2 fire-rated performance options, multiple decorative surface finishes, and customizable dimensions, WILLSTRONG® SSHP provides architects, facade contractors, and building material distributors with a versatile solution for contemporary exterior and interior architectural designs.
Key Features & Advantages
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High Strength and Structural Rigidity
The stainless steel skins and aluminum honeycomb core form a rigid composite structure. Its high stiffness-to-weight ratio supports large-format panel applications while helping maintain surface flatness and dimensional stability. -
Lightweight Construction
The honeycomb core reduces overall panel weight compared with solid metal sheets of comparable structural requirements, helping simplify handling, transportation, and facade installation. -
Fire-Rated Performance
Designed for projects with demanding fire safety requirements, the panel offers A2-s1,d0 and other fire-performance configurations subject to the applicable product specification and certification. -
Excellent Corrosion Resistance
Stainless steel 304 surface layers provide resistance to corrosion and environmental exposure, supporting long-term use in architectural applications. -
Outstanding Flatness
The hexagonal honeycomb core distributes structural loads across the panel, helping reduce oil-canning and visible surface irregularities on large facade areas. -
Flexible Architectural Design
Suitable for flat and specially shaped applications, including curved architectural surfaces and customized facade designs. -
Multiple Decorative Finishes
Available in a range of metallic surface treatments, including mirror, sandblasted, brushed, satin, antique, vibration, and customized finishes. -
Weather and Impact Resistance
Engineered to withstand various environmental conditions, with technical performance covering impact resistance, salt spray resistance, abrasion resistance, and accelerated weathering. -
Vibration Damping and Acoustic Performance
The composite structure provides vibration-damping characteristics and measurable acoustic performance, supporting applications where structural stability and sound-related considerations are important.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | WILLSTRONG® SSHP Stainless Steel Honeycomb Panel |
| Product Type | Stainless Steel Composite Honeycomb Panel |
| Face Material | Stainless Steel 304 |
| Core Material | Aluminum Honeycomb |
| Structure | Stainless Steel / Aluminum Honeycomb Composite |
| Standard Thickness | 10mm, 12mm, 20mm, 25mm |
| Additional Available Thickness | 15mm, 30mm, 50mm, 100mm |
| Stainless Steel Layer Thickness | 0.5–1.2mm |
| Standard Width | 1200mm / 1220mm / 1250mm / 1500mm, depending on configuration |
| Length | 2440–10000mm |
| Fire Performance | A2-s1,d0 / B-s1,d0 options |
| Surface Finishes | Mirror, Sandblasted, Bright Brushed, Satin Brushed, Antique, Satin, Coarse Grain, Vibration, Hand-Brushed, Special Designs |
| Customization | Available upon request |
Standard Technical Specifications
The following table presents the main technical parameters for selected panel thicknesses.
| Parameter | Unit | 10mm | 12mm | 20mm | 25mm |
|---|---|---|---|---|---|
| Fire Rating | – | A2-s1,d0 | A2-s1,d0 | A2-s1,d0 | A2-s1,d0 |
| Stainless Steel Layer Thickness | mm | 0.7/0.5 | 0.7/0.5 | 1.0 | 1.0 |
| Weight | kg/m² | 10.8 | 10.9 | 17.3 | 17.5 |
| Width | mm | 1200/1500 | 1200/1500 | 1200/1500 | 1200/1500 |
| Section Modulus (W) | cm³/m | 5 | 6.5 | 18.1 | 23.1 |
| Rigidity (EJ) | kNcm²/m | 47000 | 98000 | 396800 | 633000 |
| Stainless Steel Grade | – | 304 | 304 | 304 | 304 |
| Modulus of Elasticity | N/mm² | 200000 | 200000 | 200000 | 200000 |
| Tensile Strength of Aluminum | N/mm² | ≥520 | ≥520 | ≥520 | ≥520 |
| 0.2% Proof Stress | N/mm² | ≥205 | ≥206 | ≥207 | ≥208 |
| Elongation | % | ≥7 | ≥7 | ≥7 | ≥7 |
| Core Material | – | Aluminum Honeycomb | Aluminum Honeycomb | Aluminum Honeycomb | Aluminum Honeycomb |
Surface Performance
| Parameter | Technical Requirement |
|---|---|
| Coating / Surface Treatment | Galvanized |
| Film Thickness | ≥5 μm |
| Initial Gloss | 20–90 |
| Hardness | ≤92 HRB |
| Pencil Hardness | ≥2H |
| Adhesion | Class 0 |
| Impact Resistance | ≥50 kg·cm |
| Abrasion Resistance | ≥5 L/μm |
| Salt Spray Resistance | Class 1 or better |
| Same-Batch Color Difference | ΔE ≤2.0 |
| Different-Batch Color Difference | ΔE ≤3.0 |
Acoustic and Thermal Properties
| Parameter | Unit | 10mm | 12mm | 20mm | 25mm |
|---|---|---|---|---|---|
| Sound Absorption Factor | – | – | – | 0.05–0.07 | 0.05–0.07 |
| Sound Transmission Loss | dB | – | – | 21–25 | 21–25 |
| Thermal Resistance (R) | m²·K/W | 0.07 | 0.07 | 0.09 | 0.09 |
| Thermal Conductivity | W/m·K | 1.63 | 1.63 | 1.63 | 1.63 |
| Heat Transfer Coefficient (U) | W/m²·K | 5.68 | 5.68 | 5.58 | 5.58 |
Note: Acoustic and thermal values are presented according to the supplied technical data. Actual performance depends on the complete panel assembly and installation conditions.
Fire Performance and Testing Standards
Fire performance is an important consideration in modern facade engineering. The supplied product information includes the following test standards and classifications:
| Region | Standard | Reported Performance |
|---|---|---|
| Europe | EN 13501-1 | A2-s1,d0 |
| Europe | EN 13501-1 | B-s1,d0 |
| Germany | DIN 4102-7 | Passed |
| Singapore | BS 476 Part 6 | Fire Propagation Index = 1.0 |
| Singapore | BS 476 Part 7 | Class 0 |
| USA | NFPA 285 | Passed |
| USA | ASTM E84-15a | Flame Spread Index 5; Smoke Developed Index 0 |
| China | GB 8624-2012 | A2-s1,d0 |
| China | GB 8624-2012 | B-s1,d0 |
| Russia | GOST 31251 | Passed |
Fire classifications and test results should be confirmed against the corresponding panel configuration, test reports, and project requirements before specification.
Chemical Resistance and Durability
The panel is designed to maintain its surface appearance and bonding integrity under various environmental and testing conditions.
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Hydrochloric Acid Resistance: No visible change under the specified 5% HCl solution test.
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Nitric Acid Resistance: No blistering or other visible changes; color difference ΔE ≤5.0.
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Solvent Resistance: PVD and PVDF finishes show no substrate exposure, blushing, or dissolution under the specified test conditions.
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Mortar Resistance: No visible change.
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Accelerated Weathering: Color difference ΔE ≤3.0, chalking class 0, with no cracking or peeling.
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Damp Heat Resistance: No coating blistering, honeycomb adhesive delamination, or rust spots on the stainless steel substrate.
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Boiling Water Resistance: PVD titanium and PVDF coatings show no blushing, blistering, or delamination.
Available Surface Finishes
To meet different architectural styles and design requirements, WILLSTRONG® SSHP Stainless Steel Honeycomb Panel supports multiple surface treatments:
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8K Mirror Finish
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8K Sandblasted Finish
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Bright Brushed Finish
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Satin Brushed Finish
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Antique Finish
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Satin Finish
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Coarse Grain Finish
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Vibration Finish
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Hand-Brushed Finish
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Customized Decorative Designs
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Special Surface Finishes
These finishes offer different levels of reflectivity, texture, and visual depth, giving architects and designers greater flexibility in facade detailing and interior decoration.
Typical Applications
Stainless steel honeycomb panels are suitable for architectural projects that require a combination of structural rigidity, reduced weight, fire performance, and refined metal aesthetics.
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Commercial Building Facades: Large-format exterior cladding for office buildings, commercial complexes, and high-rise developments.
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Transportation Infrastructure: Architectural cladding for airports, railway stations, and other public transportation facilities.
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Public Buildings: Exterior and interior decorative applications in cultural centers, exhibition halls, and institutional buildings.
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Curved Architectural Structures: Custom-shaped facade elements and complex architectural surfaces.
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Interior Decoration: Decorative wall panels, ceiling systems, and other architectural metal finishes.
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High-Performance Building Envelopes: Projects requiring dimensional stability, impact resistance, and durable metal surfaces.
Customization and Ordering Options
Different architectural projects have different structural and aesthetic requirements. Customization options are available to help match panel specifications with project drawings and installation conditions.
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Panel thickness and overall dimensions
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Stainless steel face sheet thickness
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Surface finish and decorative treatment
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Panel length and width
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Customized shapes and architectural designs
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Project-specific technical requirements
For an accurate quotation and technical assessment, buyers are encouraged to provide panel drawings, required dimensions, surface finish preferences, application details, and estimated order quantities.
Why Choose WILLSTRONG®?
Established in 1995, WILLSTRONG® is a China-based facade solutions company specializing in aluminum composite panels, fire-resistant composite materials, and aluminum honeycomb systems. With approximately 30 years of industry experience, the company combines material development, manufacturing expertise, and architectural application knowledge to serve customers in international markets.
Key company strengths include:
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Established Industry Experience: Founded in 1995, with approximately 30 years of experience in facade products and architectural material solutions.
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Industry Recognition: Recognized as one of China's TOP 100 facade solutions companies.
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Global Certifications: More than 30 certifications supporting product development and international market requirements.
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Technology Development: More than 10 technology patents supporting material innovation and product improvement.
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Extensive Project Experience: Over 100,000 successful cases across different application scenarios.
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International Market Presence: Products and customers across more than 80 countries and regions.
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Long-Term Customer Support: A commitment to 30 years of ongoing support.
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Landmark Project Experience: Facade product applications in notable projects, including Charles de Gaulle International Airport.
Guided by the philosophy of "Crafting with Quality, Making for Excellence," WILLSTRONG® focuses on product quality, technical development, and reliable architectural material solutions.
Product Inquiry
If you are sourcing stainless steel honeycomb panels for a commercial facade, transportation facility, public building, or customized architectural project, our team can assist with product selection and specification confirmation.
Please provide the following information when requesting a quotation:
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Required panel thickness
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Panel width and length
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Stainless steel surface layer thickness
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Preferred surface finish
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Required fire performance classification
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Application and installation environment
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Project drawings or technical specifications
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Estimated order quantity
With a broad facade product portfolio and established project experience, WILLSTRONG® provides architectural panel solutions for different building requirements.
Contact us to discuss your project and explore the advantages of WILLSTRONG® SSHP Stainless Steel Honeycomb Panel for your next architectural application.








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