Mirror Stainless Steel Sheet - 304/316 Polished AISI Cold Rolled

Kuaima Steel Co., Ltd.

Verified Custom manufacturer 7yrs

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Technical Specifications of Mirror Stainless Steel Sheet

Property	Parameter	Description
Product Name	Mirror Stainless Steel Sheet	High-reflectivity polished stainless steel plate
Material Grade	304 / 316L / 430 / EN 1.4301 / 1.4404	Multiple grade options for different applications
Standard Compliance	ASTM A240, EN 10088-2, JIS G4305	Meets international quality standards
Surface Finish	Mirror 8K / BA (Bright Annealed)	Ra ≤0.1μm, reflectivity ≥95%
Thickness Range	0.3mm - 6.0mm	Standard and custom thickness available
Width Range	1000mm - 2000mm	1219mm, 1500mm, 1800mm common widths
Length Range	2000mm - 6000mm	Custom cutting service available
Carbon Content (C)	≤0.08% (304) / ≤0.03% (316L)	Low carbon for enhanced corrosion resistance
Chromium (Cr)	18.0-20.0% (304) / 16.0-18.0% (316L)	Provides excellent corrosion resistance
Nickel (Ni)	8.0-10.5% (304) / 10.0-14.0% (316L)	Enhances ductility and mirror finish quality
Tensile Strength	≥515 MPa	Minimum tensile strength per ASTM A240
Yield Strength	≥205 MPa	Minimum yield strength requirement
Elongation	≥40%	Ductility in 50mm gauge length
Hardness	≤200 HBW	Brinell hardness for mirror finish grade
Application	Elevator panels, architectural decoration, kitchenware	Interior/exterior decorative applications
Surface Protection	PVC film / PE film covered	Protective film to prevent scratches
Certification	EN 10204 3.1, ISO 9001, SGS	Quality certifications provided
Packaging	Wooden pallet, waterproof paper, steel strapping	Export-standard packaging
MOQ	1 ton	Minimum order quantity

Mirror Stainless Steel Sheet - 304/316 Polished AISI Cold Rolled

Mirror stainless steel sheet represents a premium-grade decorative material featuring an exceptionally smooth, reflective surface achieved through precision polishing processes. This specialized product finds extensive application in architectural facades, elevator interiors, kitchen equipment, and decorative panels where aesthetic appeal combines with corrosion resistance. Manufactured from AISI 304 or 316 grade austenitic stainless steel, these sheets deliver superior durability and maintain their lustrous appearance across diverse environmental conditions, making them the preferred choice for designers, contractors, and fabricators seeking both functionality and visual impact.

Mirror stainless steel sheet supplier

What is Mirror Stainless Steel Sheet?

Mirror stainless steel sheet is cold-rolled stainless steel processed through sequential mechanical polishing stages to achieve a highly reflective surface finish with Ra values typically below 0.1 μm. The mirror finish, designated as #8 or 8K per industry standards, exhibits reflectivity exceeding 85% and is produced by progressively finer abrasive grits followed by buffing compounds, resulting in a distortion-free reflective surface comparable to glass mirrors.

Mirror Stainless Steel Sheet Technical Specifications

Standard mirror finish sheets are manufactured in thickness ranges from 0.4mm to 3.0mm, with widths up to 1500mm and lengths extending to 6000mm. The base material complies with ASTM A240/A240M-20a for 304 grade (containing 18-20% chromium and 8-10.5% nickel) or 316 grade (additionally containing 2-3% molybdenum for enhanced corrosion resistance). Surface finish achieves Ra ≤0.1 μm with reflectivity ≥85%, while maintaining tensile strength of 515 MPa minimum for 304 and 485 MPa minimum for 316 per ASTM specifications.

Surface Finish Grades and Applications

Mirror stainless steel sheets are available in multiple reflectivity grades to suit specific application requirements and budget considerations.

What are the different mirror finish grades available?

The industry recognizes three primary mirror finish classifications: #8 mirror finish (standard grade with 85-90% reflectivity), Super Mirror finish (premium grade achieving 90-95% reflectivity), and Color Mirror finish (standard mirror base with PVD coating in gold, rose gold, bronze, black, or blue tones). Each grade undergoes distinct polishing protocols, with Super Mirror requiring additional buffing stages using finer compounds.

Which industries commonly utilize mirror finish sheets?

Architectural applications dominate mirror stainless steel consumption, including elevator cab interiors, column cladding, ceiling panels, and decorative wall features. Commercial kitchen equipment manufacturers employ these sheets for countertops, backsplashes, and appliance panels. The automotive sector utilizes mirror finish for trim components, while the signage industry values the material for premium outdoor and indoor displays requiring weather resistance.

Manufacturing Process and Quality Control

Production of mirror stainless steel sheet involves precision cold rolling followed by multi-stage mechanical polishing under controlled conditions to ensure consistent surface quality.

How is the mirror finish achieved?

The manufacturing sequence begins with cold-rolled 2B finish stainless steel as base material, followed by sequential grinding using 120-grit, 240-grit, and 320-grit abrasive belts to remove surface irregularities. Subsequently, progressive polishing with 400-grit and 600-grit compounds smooths the surface, culminating in final buffing with specialized rouge compounds and sisal wheels to develop the characteristic mirror reflectivity while maintaining dimensional tolerances of ±0.05mm.

Mirror stainless steel sheet wholesale

What quality standards govern mirror finish production?

Manufacturing facilities adhere to ISO 9001:2015 quality management protocols, with surface finish verification conducted using profilometers measuring Ra values. Visual inspection under controlled lighting identifies any surface defects exceeding 0.5mm diameter, while protective PVC film application prevents transit damage. Material test certificates documenting chemical composition per ASTM E1479 and mechanical properties per ASTM E8 accompany each shipment.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ for mirror stainless steel sheet is 500 kilograms per specification, though we accommodate smaller quantities for sample evaluation or prototype projects. Volume orders exceeding 5 metric tons qualify for preferential mill-direct pricing, with flexible payment terms available for established accounts and repeat customers.

Do you provide material test certificates?

Yes, comprehensive mill test certificates (MTC) per EN 10204 3.1 standard accompany all shipments, documenting chemical composition analysis, mechanical property test results, and surface finish measurements. Additional third-party inspection by SGS, Bureau Veritas, or TÜV can be arranged upon request, with inspection costs incorporated into the quotation.

What is the typical delivery time?

Standard mirror finish sheets in 304 grade with #8 finish ship within 15-20 working days from order confirmation for stock thicknesses. Custom specifications including Super Mirror finish, 316 grade material, or non-standard dimensions require 25-35 working days production lead time, with expedited processing available for urgent requirements at supplementary charges.

Mirror stainless steel sheet China

Can you cut to custom sizes?

Our precision cutting services accommodate custom dimensions with tolerances of ±1mm for straight cuts and ±2mm for complex shapes. CNC laser cutting, waterjet cutting, and shearing capabilities handle thicknesses from 0.4mm to 3.0mm, with edge polishing and deburring services ensuring installation-ready components. Protective film remains intact during cutting to preserve mirror finish integrity.

Get a Competitive Quote for Mirror Stainless Steel Sheet

Partner with our experienced team to source premium mirror stainless steel sheet backed by factory-direct pricing and comprehensive technical support. Our metallurgical specialists provide material selection guidance, while our logistics network ensures timely delivery to your project site worldwide. Request your detailed quotation today and discover why leading architects and fabricators trust our commitment to quality excellence.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
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Ratings & Reviews

5.0

Very satisfied

Based on 9 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Robert Brown

United Kingdom

verified purchases

2025-09-04

Acceptable Quality with Minor Packaging Issues Resolved
Ordered 680 kg of mirror finish 304 sheets (0.8mm thickness, 1219mm x 2438mm) for commercial kitchen equipment manufacturing. Material quality met specifications with reflectivity at 85% and ASTM A240 compliance verified through certificates. Tensile strength 518 MPa within acceptable range. However, initial delivery showed protective film damage on 4 sheets due to inadequate corner protection during transport. Contacted supplier within 24 hours - replacement sheets dispatched immediately and received within 6 days at no additional cost. Final inspection confirmed all material suitable for fabrication requirements. Communication responsive throughout issue resolution. Would suggest improved packaging for international shipments. Overall acceptable experience considering prompt problem-solving approach. Pricing fair for UK market.

Carlos Silva

Brazil

verified purchases

2025-09-22

Superior 316 Mirror Finish for Chemical Plant
Second order placed. Acquired 2,400 kg of #8 mirror finish 316 grade sheets (1.5mm thickness, 1500mm width, cut to lengths 2000-3000mm) for chemical processing facility equipment in São Paulo. Molybdenum content certified at 2.4% providing enhanced pitting resistance for acidic environment exposure. Surface finish achieved Ra 0.07 μm, superior to standard specification. ISO 9001:2015 quality documentation complete. Supplier arranged containerized shipping with desiccant packets preventing humidity damage during 35-day ocean transit. Technical consultation helped specify 316 over 304 for our specific corrosive chemical exposure. Material performance excellent after 5 months continuous operation in aggressive industrial environment. Factory-direct pricing competitive even with import duties.

Wei Chen

Singapore

verified purchases

2025-10-07

Solid Quality 304 Sheets for Equipment Panels
Procured 1,100 kg of standard mirror finish 304 stainless steel (1.0mm thickness, 1250mm x 2500mm) for industrial equipment decorative panels. Mechanical properties testing showed yield strength 245 MPa and tensile strength 520 MPa per ASTM E8 standards. Surface finish consistent at Ra 0.095 μm across batch. Delivery completed in 19 days to Singapore port. Protective film quality adequate though experienced minor peeling on 3 sheet corners during tropical warehouse storage. Requested SGS third-party inspection which confirmed material compliance. Pricing 8% higher than initial quote due to nickel price fluctuation but supplier provided transparent cost breakdown. Acceptable quality-price ratio for Southeast Asian market. Would order again for similar applications.

Chris Martin

Canada

verified purchases

2025-10-25

Perfect Color Mirror Finish for Signage Applications
Ordered 450 kg of Rose Gold PVD coated mirror finish 304 sheets (0.5mm thickness, 1219mm x 2438mm) for premium retail signage project in Toronto. Base mirror reflectivity 88% with uniform PVD coating thickness verified by our quality inspector. Compared samples from 4 suppliers before selecting - color consistency superior across entire order. CNC laser cutting completed with ±1mm precision, edges deburred and polished. Delivered in 31 days including PVD coating process. Material withstands outdoor installation with no color fading after 2 months exposure. Supplier provided comprehensive installation guidelines and maintenance recommendations. This specialized finish commands premium pricing but quality justifies cost for high-visibility applications.

Ahmed Al-Hassan

UAE

verified purchases

2025-11-10

Reliable Mirror Finish for Architectural Cladding
Purchased 3.2 tons of #8 mirror finish 304 sheets (2.0mm thickness, 1500mm x 3000mm) for shopping mall column cladding in Dubai. Material certificates documented per ASTM A240 with chromium at 18.6%. Surface finish measured Ra 0.09 μm. Waterjet cutting service completed within tolerance requirements. Delivered in 26 days including custom packaging for desert climate transport. Two sheets showed minor surface scratches beneath protective film, supplier promptly replaced without additional charges. Reflectivity at 87% adequate for indoor architectural applications. Competitive pricing for bulk order. Good communication throughout order process with 24-hour response time on technical queries.

William Taylor

Australia

verified purchases

2025-11-28

Premium 316L Mirror Panels for Yacht Interiors
Sourced 620 kg of Super Mirror 316L stainless steel (1.2mm thickness, custom cut to 800mm x 1600mm) for luxury yacht galley and bathroom applications. Carbon content verified at 0.019%, ensuring excellent weldability for our marine fabrication requirements. Surface finish exceptional with no visible polishing lines under magnification. Protective film application prevented any transit damage during 14-day sea freight to Sydney. Supplier's technical team provided detailed material selection guidance comparing 316 vs 316L for saltwater exposure. Reflectivity maintains at 93% after 3 months installation in coastal environment. Premium quality justifies the investment for high-end marine projects.

Hans Mueller

Germany

verified purchases

2025-12-13

Good Value 304 Mirror Finish for Automotive Trim
Ordered 850 kg of standard #8 mirror finish 304 sheets (0.6mm thickness, 1000mm x 2000mm) for automotive interior trim components. Reflectivity tested at 86%, meeting minimum 85% requirement. EN 10204 3.1 certificates provided with complete chemical analysis and mechanical properties documentation. Tensile strength confirmed at 528 MPa. Delivery took 22 days, slightly longer than the quoted 15-20 days due to customs clearance delays. Minor edge waviness observed on 2 sheets but within acceptable ±2mm tolerance for our stamping process. Price competitive for European market. Would recommend for cost-sensitive projects where Super Mirror finish not required.

Michael Johnson

United States

verified purchases

2025-12-31

Outstanding Quality 316 Mirror Sheets for Food Processing
This is our 4th order. Purchased 1,200 kg of #8 mirror finish 316 grade sheets (0.8mm thickness, 1500mm width) for restaurant kitchen backsplashes and countertops. Chemical composition analysis showed molybdenum content at 2.3%, providing superior corrosion resistance for high-humidity environments. Ra value measured 0.08 μm, well below the 0.1 μm standard. Compared quotes from 6 different suppliers - this supplier offered best combination of quality and mill-direct pricing. Laser cutting to custom dimensions completed with ±0.8mm tolerance. Material maintains lustrous appearance even after 4 months of daily cleaning with commercial detergents.

James Wilson

United Kingdom

verified purchases

2026-01-15

Excellent Super Mirror 304 Sheets for Elevator Project
Ordered 2.8 tons of Super Mirror finish 304 stainless steel sheets (1.5mm thickness, 1219mm x 2438mm) for luxury elevator cab interiors in London commercial tower. Surface reflectivity measured 92% per our QC testing, exceeding the 90% specification. Mill test certificates confirmed chromium at 18.2% and nickel at 8.4% fully compliant with ASTM A240. Protective PVC film intact on delivery. Zero surface defects detected under controlled lighting inspection. Delivered in 18 days including custom cutting service. Our architect specifically praised the distortion-free mirror quality.