Gold Mirror Stainless Steel Sheet SUS304 SS Sheet Thickness 0.4 - 1.5mm for Decoration Materials
Gold mirror stainless steel sheet of grade SUS304 is a high-performance decorative material, renowned for its striking golden mirror finish, excellent corrosion resistance, and superior mechanical strength. It is widely favored in interior and exterior decoration fields, as it combines aesthetic appeal with durable performance, making it an ideal choice for elevating the visual quality of various spaces and products.
1. Chemical Composition
SUS304 is austenitic stainless steel, and its chemical composition strictly adheres to industry standards to ensure its core properties (e.g., corrosion resistance, weldability). The typical chemical composition (by weight percentage) is as follows:
| Element | Content Range (%) | Function |
| Chromium (Cr) | 18.00 - 20.00 | The primary element for corrosion resistance; forms a dense oxide film on the surface. |
| Nickel (Ni) | 8.00 - 10.50 | Stabilizes the austenitic structure, enhancing toughness and low-temperature performance. |
| Carbon (C) | ≤ 0.08 | Controls hardness; low carbon content reduces intergranular corrosion risk. |
| Silicon (Si) | ≤ 1.00 | Improves high-temperature oxidation resistance and processability. |
| Manganese (Mn) | ≤ 2.00 | Aids in deoxidation during production and enhances strength. |
| Phosphorus (P) | ≤ 0.045 | Minimized to avoid brittleness and ensure structural integrity. |
| Sulfur (S) | ≤ 0.030 | Reduced to prevent hot cracking during welding and improve corrosion resistance. |
| Iron (Fe) | Balance | The base metal that forms the alloy’s structural framework. |
2. Mechanical Properties
The mechanical properties of SUS304 gold mirror stainless steel sheets (in the annealed state, suitable for decorative processing) meet the requirements of high durability and formability, ensuring they can withstand common processing and usage scenarios:
| Property | Typical Value | Test Standard Reference |
| Tensile Strength (σb) | ≥ 515 MPa | ASTM A240 / JIS G4305 |
| Yield Strength (σ0.2) | ≥ 205 MPa | ASTM A240 / JIS G4305 |
| Elongation (in 50mm, δ) | ≥ 40% | ASTM A240 / JIS G4305 |
| Hardness (Brinell, HB) | ≤ 201 | ASTM E10 |
| Hardness (Rockwell, HRB) | ≤ 92 | ASTM E18 |
These properties ensure the sheet can be bent, cut, or polished without cracking, while maintaining long-term structural stability in decorative applications.
3. Product Specifications
The product is tailored for decorative use, with specifications optimized to balance flexibility and usability:
- Grade: SUS304 (AISI 304, EN 1.4301) – the most widely used austenitic stainless steel for decorative purposes.
- Thickness: 0.4mm - 1.5mm – the optimal thickness range for decoration: thinner sheets (0.4-0.8mm) are suitable for lightweight applications (e.g., wall panels), while thicker sheets (1.0-1.5mm) work for high-wear areas (e.g., elevator doors).
- Width: Common widths include 1000mm, 1219mm, and 1500mm (custom widths available upon request).
- Length: Standard lengths are 2000mm, 2438mm, and 3000mm (custom lengths supported for bulk orders).
- Mirror Finish Quality: Achieves a 8K mirror effect (the highest standard for decorative stainless steel), with a surface roughness (Ra) ≤ 0.02μm. The golden coating is evenly applied via vacuum plating or electroplating, with a thickness of 0.1-0.3μm for long-lasting color retention.
4. Product Standards
To ensure consistency, quality, and safety, the gold mirror stainless steel sheet complies with international and regional standards:
- ASTM A240/A240M (USA): Specifies requirements for chromium and chromium-nickel stainless steel plates, sheets, and strips for pressure vessels and general applications.
- JIS G4305 (Japan): Defines stainless steel plates, sheets, and strips, including chemical composition and mechanical property requirements.
- EN 10088-2 (Europe): Covers flat products of stainless steels for general purposes, ensuring corrosion resistance and processability.
- GB/T 3280 (China): National standard for stainless steel cold-rolled plates and sheets, widely used in domestic decoration projects.
- Coating Standards: The golden plating meets ASTM B480 (for vacuum-deposited metallic coatings) and ISO 1463 (for corrosion resistance of electroplated coatings), ensuring no peeling or discoloration under normal use.
5. Other Colors and Surface Finishes
Beyond the golden mirror finish, SUS304 stainless steel sheets offer diverse color and surface options to match different decorative styles:
5.1 Other Mirror Colors
- Rose gold: Popular for luxury interiors (e.g., jewelry stores, high-end hotels) due to its warm, elegant tone.
- Black: Creates a modern, minimalist look; suitable for contemporary homes or commercial spaces (e.g., bar counters).
- Silver (natural SUS304 mirror): The classic mirror finish, widely used in areas requiring a bright, clean appearance (e.g., kitchen backsplashes).
- Champagne gold: A softer alternative to standard gold, ideal for neutral-toned interiors.
5.2 Non-Mirror Surface Finishes
- Brushed finish (hairline): Features fine parallel lines, offering a matte, textured look; resistant to fingerprints, suitable for high-touch areas (e.g., door handles).
- Etched finish: Custom patterns (e.g., floral, geometric) can be etched on the surface, adding design versatility for decorative panels.
- Sandblasted finish: Creates a uniform, frosted appearance, often used in semi-private spaces (e.g., bathroom partitions).
6. Applications
Thanks to its aesthetic appeal, corrosion resistance, and easy maintenance, the SUS304 gold mirror stainless steel sheet is widely used in decorative fields:
