304 Stainless Steel Sheet 8 Mirror 8K Mirror Finishing Precision Grinding Polishing
The 304 Stainless Steel Sheet with #8 Mirror Finish represents the highest level of polished reflectivity available for stainless steel. This premium finish is produced through a meticulous multi-stage polishing process that creates a smooth, defect-free surface with exceptional light reflection, comparable to a glass mirror.
Unlike standard mill finishes, the #8 mirror finish offers a brilliant, highly reflective surface that enhances the aesthetic appeal of any project while retaining the full mechanical properties and corrosion resistance of 304 stainless steel. The mirror surface is also less prone to contaminant adhesion and chemical reactions, contributing to improved corrosion resistance in certain environments.
This versatile material can be used directly as a finished architectural element or serve as a base for further processes such as PVD coloring, etching, laser cutting, bending, and welding.
Key advantages:
- Superior Reflectivity: Achieves near glass-like clarity and image reflection
- Defect-Free Surface: High-quality polishing removes surface imperfections
- Enhanced Corrosion Resistance: Smooth surface limits contaminant adhesion and material reactions
- Shatterproof: Provides the aesthetic of mirrored glass without the risk of breakage
- Fully Customizable: Available in various thicknesses, sizes, and colors (PVD coating)
- Versatile: Suitable for direct application or as a base for further processing
| Parameter | Details |
|---|---|
| Product Name | 304 Stainless Steel Sheet – #8 Mirror Finish |
| Standard | AISI, JIS, GB, ASTM A240, EN 10088-2 |
| Grade | 304 (304L also available) |
| Thickness | 0.30 mm – 3.00 mm (custom available) |
| Standard Sizes | 1000x2000 mm / 1219x2438 mm (4x8 ft) / 1219x3048 mm / 1500x3000 mm |
| Custom Sizes | Width, length, and thickness adjustable upon request |
| Surface Finish | #8 Mirror Finish (super reflective, near glass-like clarity) |
| Thickness Tolerance | ±0.01 – 0.02 mm (or as required) |
| Color Options (Optional) | PVD coating: Gold, Rose Gold, Black, Bronze, Champagne, Titanium, Blue, Green |
| Additional Processing | Laser cutting, bending, welding, etching, PVD coloring, and anti-fingerprint coating |
| Element | Percentage max |
|---|---|
| C (Carbon) | 0.08 |
| Si (Silicon) | 0.75 |
| Mn (Manganese) | 2.00 |
| P (Phosphorus) | 0.045 |
| S (Sulfur) | 0.030 |
| Cr (Chromium) | 18.0 – 20.0 |
| Ni (Nickel) | 8.0 – 10.5 |
| Property | Value |
|---|---|
| Yield Strength (ReH min.) | ≥ 205 MPa |
| Tensile Strength (Rm) | ≥ 520 MPa |
| Elongation (A min.) | ≥ 40% |
| Hardness (HB) | ≤ 201 |
The #8 mirror finish is the most reflective polished finish defined by ASTM standards. It is produced through a progressive polishing process using increasingly fine abrasives:
- Initial Grinding: Coarse belts or wheels remove mill scale and surface imperfections
- Intermediate Polishing: Medium-grit abrasives create a uniform satin surface
- Fine Polishing: Fine-grit belts refine the surface to a bright, reflective state
- Final Buffing: Cloth wheels with polishing compounds achieve the final mirror-like clarity
Quality Note: The achievable quality of a mirror finish depends on the quality of the base metal. Our 304 stainless steel coils are selected for their excellent surface characteristics, ensuring a defect-free final product.
To protect the delicate mirror finish, each sheet is carefully packed for international transport:
| Step | Packaging Detail |
|---|---|
| 1. Protective Film | Peelable PE protective film applied to the mirror surface |
| 2. Interleaving | Kraft paper or a foam sheet between each sheet |
| 3. Moisture Protection | VCI paper and PE film wrap |
| 4. Edge Protection | Cardboard edge protectors on all sides |
| 5. Securing | Heavy-duty steel or plastic strapping |
| 6. Palletizing | Export-standard, fumigated wooden pallets (ISPM 15 certified) |
| 7. Optional | Waterproof shrink-wrap and corner guards for sea freight |
The 304 #8 mirror finish sheet is a versatile, high-end material used in a wide range of architectural and decorative applications:
Elevator & Escalator Interiors
- Elevator car walls, ceiling panels, and door returns
- Creates a bright, spacious feel in commercial and residential elevators
Architectural Wall Cladding & Ceilings
- Interior feature walls in hotels, lobbies, and corporate offices
- Decorative ceiling panels and column covers
- Retail store displays and boutique interiors
PVD Colored Applications
- Base material for PVD coating (gold, black, bronze, rose gold, etc.)
- Used for luxury decorative elements in hospitality and high-end residential projects
Furniture & Product Design
- Furniture inlays, tabletops, and cabinet doors
- Display fixtures and signage
Processing Applications
- Base material for etching and pattern creation
- Raw material for fabricated parts (laser-cut, bent, welded)
Note on Corrosion Resistance: The smooth mirror surface limits contaminant adhesion, which can improve corrosion resistance compared to rougher finishes. For outdoor or marine applications, 316L grade is recommended.
We support a full range of value-added processing services:
| Service | Description |
|---|---|
| Laser Cutting | Precision cutting of custom shapes and sizes |
| Bending | Sheet metal bending to specified angles |
| Welding | TIG welding of mirror-finished components |
| PVD Coating | Application of durable color finishes |
| Etching | Creation of custom patterns and designs |
| Anti-Fingerprint Coating | Clear coating to reduce smudging |
Tariff Advantage: For customers facing import tariffs on raw stainless steel sheets, processing the sheet into finished parts (e.g., cut, bent, and welded components) may qualify for a different customs classification, potentially reducing or avoiding additional duties. Please consult your local customs broker for specific advice.
- Premium Polish Quality: Our advanced polishing lines produce a consistent, high-definition mirror finish free from scratches, pitting, or orange peel effects.
- High-Grade Base Material: We use prime quality 304 stainless steel coils with excellent surface characteristics, ensuring superior polishability.
- Full Customization: Thickness, dimensions, PVD colors, and additional processing are all available.
- High Production Capacity: Monthly capacity of 15,000 sheets with stable, reliable export quality.
- Competitive Pricing: Factory-direct pricing for maximum value.
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