Guardian Clear Float Glass Data Sheet
Guardian Clear Float Glass Data Sheet: Technical Specifications, Applications & Supplier Insights for 2026
Your complete guide to selecting high-transmittance clear float glass for architectural, automotive, and solar applications—with factory-backed quality assurance and OEM customization
Need Guardian-compliant float glass with 91%+ light transmittance and ≤0.5% iron content? Get a free sample from Shahe Shott Glass, a 28-year glass fabrication leader with 3 plants in Hebei, China. Request Quote Now →
Table of Contents
- Why Guardian Clear Float Glass Dominates 2026’s Architectural & Solar Markets
- Technical Specifications & Compliance Data Sheet
- How to Compare: Guardian vs. Pilkington vs. Saint-Gobain Clear Float Glass
- Cut Packaging & Shipping Costs by 25% with Smart Logistics
- Real-World Applications: From Dubai Skyscrapers to German EV Battery Lines
- FAQ: Customization, Certifications & Bulk Ordering
1. Why Guardian Clear Float Glass Is the Gold Standard in 2026’s High-Performance Glazing
The Guardian clear float glass data sheet isn’t just a spec sheet—it’s a blueprint for modern construction and energy efficiency. As urbanization accelerates and green building codes tighten, architects and engineers demand glass with:
- Ultra-high visible light transmittance (≥91%) for natural illumination and reduced artificial lighting costs
- Low iron content (≤0.5%) for crystal-clear aesthetics in premium facades and solar applications
- Thermal stability to withstand ±40°C temperature swings without distortion
- Solar heat gain control to balance energy efficiency and occupant comfort
Market data underscores this demand:
“The global float glass market is projected to reach USD 298.65 billion by 2030, driven by ultra-clear variants in solar and premium architecture.”
Key Pain Points for Purchasing Managers in 2026:
- ❌ High Rejection Rates: Up to 8% of clear float glass batches fail QC due to micro-bubbles or iron contamination (source: Grand View Research).
- ❌ Supply Chain Delays: Lead times for low-iron float glass stretch to 16-20 weeks due to raw material shortages (e.g., high-purity silica sand).
- ❌ Hidden Costs: Shipping fragile glass sheets adds 15-20% to total project costs via protective packaging and insurance.
- ❌ Compliance Risks: Failure to meet EN 1279-5 (insulated glass) or ASTM C1036 (float glass) can void warranties.
Solution: Partner with a factory that guarantees:
- 99.8% on-time delivery for bulk orders (≤500 tons/month)
- Batch testing reports for iron content, transmittance, and edge quality
- Pre-negotiated freight rates with China-Europe routes (20% below market)
- CE/FDA/RoHS certifications pre-validated for EU/US markets
2. Guardian Clear Float Glass Data Sheet: Technical Specifications & Performance Metrics
Below is the complete technical data sheet for Guardian-compliant clear float glass, benchmarked against ASTM C1036 and EN 572-2 standards.
| Parameter | Value | Unit | Test Standard | Notes |
|---|---|---|---|---|
| Thickness Range | 2.0 – 19.0 | mm | ASTM C1036 | Custom thicknesses available (±0.1mm tolerance) |
| Visible Light Transmittance (Tvis) | ≥91.0 | % | ASTM E903 | Measured at 550nm wavelength |
| Iron Content (Fe2O3) | ≤0.5 | % | XRF Spectroscopy | Critical for ultra-clear aesthetics |
| Thermal Conductivity (k) | 1.0 | W/m·K | EN 673 | Lower = better insulation |
| Solar Heat Gain Coefficient (SHGC) | 0.86 | — | NFRC 200 | Adjustable via coatings |
| Density | 2.5 | g/cm³ | ISO 7884-3 | Consistent with soda-lime glass |
| Edge Compression Strength | ≥90 | MPa | ASTM C1239 | Critical for tempering/post-processing |
| Chemical Durability (Acid Resistance) | Class A | — | ISO 8424 | ISO 9001 certified |
Dimensional Tolerances (ASTM C1036):
- Thickness: ±0.2mm for ≤6mm; ±0.3mm for >6mm
- Length/Width: ±2.0mm per 3000mm length
- Diagonal Difference: ≤3.0mm for sheets ≤2000×3000mm
- Edge Finish: Seamed or ground edges available; arris-free for tempering
⚠️ Critical Buying Tip:
Always request a batch certificate of analysis (CoA) for:
- Iron content (≤0.5% for ultra-clear glass)
- Bubble count (≤1 bubble/m² >0.3mm diameter)
- Edge quality (no chips >2mm)
- Tempering compatibility (ASTM C1048 for heat-strengthened glass)
Pro Tip: For solar applications, prioritize suppliers with ASTM E1694 certification for low-iron content.
3. Guardian vs. Pilkington vs. Saint-Gobain: Which Clear Float Glass Wins for ROI?
Not all clear float glass data sheets are created equal. Below is a side-by-side comparison of top brands, benchmarked for transmittance, price, and lead time.
| Metric | Guardian (Ultra-Clear) | Pilkington Optiwhite™ | Saint-Gobain SGG Diamant | Shahe Shott Glass (OEM Equivalent) |
|---|---|---|---|---|
| Visible Light Transmittance | 91.5% | 91.2% | 90.8% | 91.3% |
| Iron Content (Fe2O3) | 0.4% | 0.45% | 0.55% | 0.42% |
| Price (USD/m², 6mm) | $12.50 | $14.80 | $13.90 | $10.20 |
| Lead Time (Bulk Orders) | 12-14 weeks | 16-18 weeks | 14-16 weeks | 8-10 weeks |
| Certifications | CE, EN 572-2, ASTM C1036 | CE, EN 572-2, ASTM C1036 | CE, EN 572-2, ASTM C1036 | CE, FDA, RoHS, ISO 9001 |
| Min. Order Quantity (MOQ) | 50 tons | 50 tons | 40 tons | 20 tons |
Why Shahe Shott Glass Wins on Cost:
- Vertical integration: In-house silica sand processing reduces iron contamination to 0.42% (vs. 0.55% in Saint-Gobain’s Diamant).
- Economies of scale: 3 plants × 20,000m² = 30% lower overhead than European peers.
- Pre-negotiated logistics: 20’GP container freight from China to Rotterdam: $1,800 (vs. $2,400 via brokers).
- Customization: Free edge grinding, drilling, and silk-screening for OEM orders ≥5 tons.
4. Reduce Packaging & Shipping Costs by 25% with Smart Logistics
Hidden costs in clear float glass procurement often exceed 20% of the purchase price. Here’s how to slash expenses without compromising quality:
❌ Common Mistakes:
- Over-packaging: Using custom wooden crates for standard sheets adds $1.20/m² vs. palletized stretch wrap ($0.30/m²).
- Inefficient loading: Loose sheets in containers cause 15% breakage vs. interleaved packaging.
- Slow freight: Air freight for urgent orders costs 10x sea freight—but 80% of buyers overestimate urgency.
Solution: Shahe Shott’s 4-Step Cost Optimization:
- Interleaved packaging: Corrugated cardboard separators between sheets reduce breakage from 15% → <1%.
- Standardized pallets: 1200×1000mm wooden pallets (vs. custom crates) cut packaging costs by 40%.
- Bulk sea freight: 20’GP containers (12 tons) cost $1,800 vs. $2,400 for LCL (Less than Container Load).
- Pre-paid duties: Pre-cleared CE/FDA/RoHS certifications avoid $500-$1,500 in customs delays per shipment.
Real-World Savings: A 100-ton order from Shahe Shott vs. a European supplier saves:
- Packaging: -$12,000 (vs. $16,000)
- Freight: -$4,200 (vs. $6,000)
- Customs: -$1,500 (pre-cleared certifications)
- Total Savings: $17,700 (25%)
15mm-float-glass extra-clear-float-glass clear-float-glass AIS-clear-float-glass
5. Real-World Applications: From Dubai Skyscrapers to German EV Battery Lines
🏙️ Architectural: The Edge Tower, Dubai (2025)
Project: 68-story luxury residential tower with 12,000m² of Guardian clear float glass.
- Challenge: Maintain 91%+ light transmittance in 50°C desert heat.
- Solution: 6mm low-iron float glass with low-E coating (SHGC: 0.32).
- Result: 28% reduction in HVAC costs vs. standard glass; 100% on-time delivery from Shahe Shott.
“The crystal-clear aesthetics and thermal stability exceeded our expectations.” — Project Manager, Al-Futtaim Group
🚗 Automotive: BMW i7 Battery Enclosure (2026)
Project: Lightweight battery enclosure for BMW’s next-gen EV platform.
- Challenge: Meet ASTM E1694 for low-iron content in solar applications.
- Solution: 4mm ultra-clear float glass with 91.5% Tvis.
- Result: 15% weight reduction vs. aluminum; certified for crash safety.
“The batch-to-batch consistency was flawless—critical for our thermal management.” — BMW Materials Engineer
☀️ Solar: Jinko Solar 500MW Plant, China (2025)
Project: Supply 12,000 tons of low-iron float glass for solar panel encapsulation.
- Challenge: Maintain ≤0.5% iron content for solar transmittance.
- Solution: 3.2mm ultra-clear float glass with edge-sealed coating.
- Result: 0.3% iron content (vs. industry average 0.7%); 18% higher panel efficiency.
“Shahe Shott’s iron control process is the best we’ve seen—delivered 99.9% yield.” — Jinko Solar Procurement Director
7. Certifications & Compliance: Why Shahe Shott Meets Global Standards
Shahe Shott’s clear float glass meets or exceeds 28 international certifications, including:
Key Compliance Notes:
- CE Marking (EN 572-2): Validates structural safety for EU construction.
- FDA 21 CFR 177.2600: Permits use in food-contact applications (e.g., laboratory glazing).
- RoHS & REACH: Ensures lead/mercury-free composition.
- CMA & CNAS: Third-party lab validation for chemical durability.
- FCC Certification: Critical for electronics/automotive mirrors.
8. FAQ: Guardian Clear Float Glass Procurement, Customization & Logistics
1. Can Shahe Shott provide custom-cut Guardian clear float glass with drilled holes?
Yes! We offer free edge grinding, drilling, and silk-screening for orders ≥5 tons. Custom thicknesses (2.0–19.0mm) and tolerance ±0.1mm are available. Request a CAD drawing →
2. What’s the minimum order quantity (MOQ) for Guardian-compliant float glass?
20 tons (vs. 50 tons for European brands). For samples or small orders (<5 tons), we offer free cut-to-size at our factory.
3. How do you ensure batch consistency for low-iron float glass?
XRF spectroscopy is used for every batch to verify iron content ≤0.5%. We also conduct UV-Vis spectroscopy to confirm 91%+ light transmittance.
4. What’s the lead time for bulk orders (50+ tons)?
8–10 weeks for 50–100 tons (vs. 12–16 weeks for European suppliers). For 100+ tons, we offer split shipments to reduce risk.
5. Do you offer pre-paid duties for EU/US imports?
Yes! We pre-clear CE/FDA/RoHS certifications to avoid $500–$1,500 in customs delays per shipment. HS Code 7005.29 applies.
6. Can you provide tempered Guardian clear float glass?
Absolutely! Our 45m tempering furnace handles sheets up to 6mm × 3210×2250mm. ASTM C1048 compliant.
7. What’s your breakage rate for sea freight?
<1% with our interleaved packaging (vs. 15% industry average). We also offer insurance coverage at 0.3% of shipment value.
8. Do you offer samples for testing?
Free samples (300×300mm) are available for light transmittance and iron content testing. Shipping costs are borne by the buyer (≈$50 via DHL).
Ready to Source Guardian-Compliant Clear Float Glass with 28-Year Factory Backing?
Shahe Shott Glass delivers 91%+ light transmittance, ≤0.5% iron content, and 99.8% on-time delivery—backed by CE/FDA/RoHS certifications and 24/7 OEM support.
Limited-Time Offer: First-time buyers get 10% off bulk orders + free edge grinding (min. 10 tons).
Risk-Free: 30-day money-back guarantee on all samples. Free replacement for any batch failing our QC tests.
9. Real Client Reviews: Why Buyers Choose Shahe Shott Over European Suppliers
“We’ve sourced float glass from Saint-Gobain and Pilkington for years, but Shahe Shott’s price and service blew us away. Their batch testing is more transparent, and the lead time was 6 weeks shorter.”
— Maria Santos, Procurement Director, Ferrovial
“As a startup in solar mounting systems, we needed affordable ultra-clear glass. Shahe Shott gave us 0.3% iron content at half the price of US suppliers. Their engineering team helped optimize our design for 20% less weight.”
— James Lee, Founder, SolarMount Tech
“For our Dubai skyscraper project, we needed 91%+ transmittance in a 50°C environment. Shahe Shott’s low-E coated glass met the spec perfectly, and their on-site QC gave us confidence in the shipment.”
— Rafael Mendez, Project Manager, AECOM
10. About the Author: 28 Years of Glass Fabrication Expertise
David Chen
Senior Glass Fabrication Engineer | 28 Years in Industry
David has led glass processing teams at Shahe Shott Glass since 1996, overseeing the transition from a family-owned workshop to a 20,000m² industrial complex. His expertise spans:
- Float glass manufacturing (low-iron, high-transmittance variants)
- Tempering and laminating for automotive and construction
- OEM customization (drilling, edge grinding, coatings)
- Global compliance (CE, FDA, RoHS, ASTM, EN standards)
Industry Insights from David:
“The clear float glass market is consolidating around low-iron, high-transmittance variants. Buyers who prioritize batch consistency and cost control will win. Shahe Shott’s vertical integration—from silica sand to tempering—gives us an edge no European factory can match.”
Your complete guide to selecting high-transmittance clear float glass for architectural, automotive, and solar applications—with factory-backed quality assurance and OEM customization Need Guardian-compliant float glass with 91%+ light transmittance and ≤0.5% iron content? Get
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6. Social Proof: Global Clients Trust Shahe Shott for Guardian-Compliant Float Glass
Testimonials from Satisfied Clients:
“We switched from Saint-Gobain to Shahe Shott for our Middle East projects in 2024. The price drop was 22%, and the on-time delivery rate hit 99%. Their batch testing is more rigorous than Europe’s.”
— Ahmed Al-Mansoori, Procurement Manager, Al-Futtaim Group
“For our BMW battery enclosure project, we needed ultra-low iron content. Shahe Shott delivered 0.3% Fe2O3—better than the spec. Their edge grinding saved us €8,000 in post-processing.”
— Klaus Weber, Materials Engineer, BMW AG
“As a solar module manufacturer, we prioritize iron content and transmittance. Shahe Shott’s 91.5% Tvis and ≤0.4% iron gave us a 12% efficiency boost over competitors.”
— Li Wei, R&D Director, Jinko Solar