Excelite

Excelite Plastic Products|Premium Materials|Trusted Quality

Custom Thick Polycarbonate Sheets China Manufacturer

 30mm-480mm thickness | Ship to Worldwide | UV Resistant

At Excelite, our optical thick lexan polycarbonate sheet offers many technical advantages, including exceptional impact resistance, light transmission rates of up to 89%, UV protection, and virtually unbreakable properties.

Thick Polycarbonate Sheet Description

Different with extruded polycarbonate solid sheets that ranges from 1mm to 25mm thickness, Excelite Ultra-Thick Polycarbonate Sheets are cast polycarbonate using a pouring mold technique. This process involves material melting and specific stress-relieving procedures for polycarbonate, enabling the production of sheets from 30mm, 40mm to 480mm thick.

Our super thick polycarbonate sheets feature glossy surfaces on both sides, exceptional optical clarity, and impressive strength, making them the preferred choice across numerous industries and applications.

It’s a perfect industrial polycarbonate material for polycarbonate machining and fabrication, such as CNC routing, engraving, rounding, punching, polishing, chamfering, polycarbonate milling, drilling, and grinding. 

Product Features & Benefits

  • Exceptional thickness and strength (30mm-480mm)
  • Optical transparency and glossy finish on both sides
  • High temperature resistance
  • Ballistic polycarbonate, bulletproof
  • High pressure resistance
  • UL V0 fire grade
  • Easy CNC machining
  • Electrical insulation
  • Super high thermal insulation
  • ESD static dissipative

Excelite Thick Polycarbonate Sheet Specifications

  • Available thickness range: 30mm to 480mm for cast sheets
  • Sheet dimensions: 1000x2000mm or customize 
  • Weight: Density 1.22kg/sqm
Thickness Range(mm) Process Type Thickness Tolerance Standard Dimensions Primary Applications
25mm-30mm Extrusion -0.8mm to +1mm 1220x2440mm Machine Guards, Sight Glasses, Protective shields
32mm-60mm Extrusion +1mm to +2mm 1000x2000mm Pressure Vessels, High-pressure viewing windows
60mm-100mm+ Cast Polycarbonate +3mm to +5mm 1000x2000mm/Custom Deep-sea equipment

Quality Standards

  • Compliance with international quality and safety standards (e.g., ISO, ASTM, UL, AS, CE)
  • In-house quality control measures
  • Third-party inspection and certification (if applicable)
  • Warranty or guarantee offered on the products

Product Technical Data Sheets

Properties Test Conditions Test Method Unit Typical Values
Density SO 1183-1 g/cm3 1.2
Water absorption saturation Water at 23°C ISO 62 % 0.3
Water absorption equilibrium 23°C, 50% relative humidity ISO 62 % 0.12
Refractive index Procedure A ISO 489 - 1.587
Tensile modulus 1mm/min ISO 527-1, -2 Mpa 2300
Yield stress 50mm/min ISO 527-1, -2 Mpa 60
Yield strain 50mm/min ISO 527-1, -2 % 6
Nominal strain at break 50mm/min ISO 527-1, -2 % 50
Flexural modulus 2mm/min ISO 178:2019 Mpa 2410
Flexural strength 2mm/min ISO 178:2019 Mpa 113
IZOD impact strength (Notched) 23°C, 50% relative humidity, 3.2mm ASTM D256-10 Method A J/m 921
VICAT Softening Temperature 50N, 50K/h ISO 306: 2013 °C 145
Thermal conductivity 23°C ISO 8302 W/mK 0.2
Electrical strength 23±2°C, 50±5 % RH, 48h IEC 60243 -1: 2013 k/V/mm 14.29
Volume resistivity IEC 60231 -3: 2016 Ω*m 1.14E+15 Ω*m
Surface resistivity IEC 60231 -3: 2016 Ω/sq 3.18E+16 Ω/sq

Case Study

50mm thick polycarbonate sheets

What Builds Require Thick Sheets?

Thicker sheets should most certainly be used on structures where special highly impact resistance and high optical clarity request. The most common example would be in a pressure vessel. These days, there are variations of 40mm, 50mm, and 100mm polycarbonate sheets that have been designed specifically for use on pressure vessel window.

super thick polycarbonate sheets

Is Thicker Polycarbonate Sheets Clarity?

If the polycarbonate sheet is thicker than 30mm, it is cast technology. Cast polycarbonate offers superior optical clarity and thermal stability. One point to note is that Cast polycarbonate can have a sheet thickness variation of up to + 5-10%. 

So if we should keep in high accuracy for special applications. We should consider polishing and milling processes.

Heavy Duty Applications of Thick Polycarbonate Sheets

circular-tank-mounted-sight-glass

Safety Pressure Sight Glass

Circular sight gauge, transparent tank window, industrial sight glass, polycarbonate mounted viewing window, bullet-resistant glass for military vehicles and installations, radiation shielding panels for nuclear facilities, gas and liquid pressure equipment which request high transparency,  impact resistant. 

think polycarbonate screws

Polycarbonate Component Parts

Polycarbonate instrument components, like polycarbonate cylinders, plastic columns, windows, machine guards, manifolds, control panels, polycarbonate pipe fittings, conical parts, polygonal three-dimensional shapes, irregular parts, high-pressure polycarbonate high-end equipment, precision machinery.

Clear polycarbonate sheet for bullet train window

Protective Barriers and Safety Equipment

Shatter proof screens, impact protection barriers, protective barriers, machine guards, impact resistance is essential for safety and security.

polishing polycarbonate

Electronic Equipment Housings

Thick polycarbonate sheets provide machining stock for electronic equipment housings, transparent covers, and protective enclosures. CNC machining creates internal cavities, mounting holes, and cable openings, while transparency allows visual inspection of enclosed components. 

Frequent Askded Questions

Yes, Excelite is a full-service manufacturer. Beyond supplying raw thick polycarbonate sheets (30mm–480mm), we offer precision CNC machining, drilling, bonding, and high-clarity surface polishing. Simply submit your CAD or STEP files, and our engineers will evaluate your drawings to deliver finished, ready-to-install components.
We offer standard and custom thicknesses ranging from 30mm up to 480mm. Standard sheet sizes are 1000x2000mm, but we also provide custom cut-to-size blocks, thick cylinders, and heavy-duty inspection windows based on your exact equipment specifications.
We accommodate both prototype development and full-scale industrial production runs, with an MOQ starting from 1 piece for custom thick sheets or machined parts. Lead times typically range from 7 to 15 business days, depending on thickness, processing complexity, and order quantity. Express global shipping via air or ocean freight is available.
Yes. Every batch of Excelite thick polycarbonate sheets undergoes strict in-house quality control. We can provide Material Test Reports (MTRs), UL V0 flame-retardant certification, ISO compliance, and third-party inspection documents upon request to meet high-pressure, military, or industrial safety requirements.
TAILORED POLYCARBONATE SOLUTION
 
 

Get a Quote Today

Looking to transform your vision into a tangible product? 

At Excelite Plastics, every project is unique.

+86 135 8555 4902 (China)

+61452 396 680 (Australia)

Block 1 RuiSu Building, 2 Kecheng Rd, Suzhou, China 215122

Australia Branch: 6 Stephen Road, Dandenong South 3175

Click or drag a file to this area to upload.