Excelite

Ultra Thick Polycarbonate Sheet

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

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 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. 

Features Of Ultra-Thick Polycarbonate Sheet

  • 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

Product Specifications

  • Available thickness range: 30mm to 480mm for cast sheets
  • Sheet dimensions: 1220x2440mm, 1830x2440mm, 2050x3050mm or customize 
  • Weight: Density 1.22kg/sqm

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

Technical Data Sheet

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.

Application

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 transparent components, like polycarbonate cylinders, plastic columns, 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.

FAQ

CNC machining polycarbonate and water jet cutting polycarbonate

The ultra-thick polycarbonate sheet is compatible with various cutting methods like electronic cutting machines, plate cutting machines, CNC milling, and water jet cutting. Among these, CNC milling and ultra-high-pressure water jet cutting are highly recommended for thick polycarbonate.

Waterjet cutting come in two types: Abrasive Water Jet and Pure Water Jet Cutting. Pure waterjet cutting helps maintain the physical and chemical properties of the ultra-thick polycarbonate sheet and provides a superior, polished surface. For polycarbonate sheets thicker than 200mm, abrasive waterjet cutting offers high speed and pressure, aiding in efficient cutting. Finer abrasive particle sizes result in a better polishing effect and improved cutting surface finish. With waterjet technology surpassing ultra-high pressures of 520MPa, it can effectively cut ultra-thick polycarbonate sheets exceeding 300mm in thickness.

When drilling holes in thick polycarbonate sheets, use a twist drill with a spiral angle between 12 to 16 degrees for easy chip removal. Keep the drill bit and surface cool, and ensure the groove is smooth and clean. For larger holes, try distributed drilling or hollow drills. Use sharp bits to prevent damage. Keep holes away from the sheet edge and space them apart. Consider bolt holes with a slightly larger diameter than the bolt for thermal expansion.

To make thick-walled polycarbonate cylindrical transparent parts, excavating holes, semi-perforated parts, or internally hollow polycarbonate transparent components, boring is a typical CNC cutting for internal processing of transparent materials. By utilizing CNC boring processes along with polycarbonate milling, drilling, and grinding methods, suitable tools can be used for thick polycarbonate sheet machining. Boring can be divided into through-holes, tapered holes, and non-through-holes based on polycarbonate sheeting thickness , enabling the creation of arbitrary internal diameters and wall thicknesses for tubular components.

Polishing can be carried out using traditional machining methods like milling, grinding, coarse polishing, and fine polishing. The process includes grinding depths of 0.06-0.2mm and 0.01-0.05mm for coarse and fine polishing, respectively. During grinding, monitor grinding wheel speeds and cooling of contact surfaces. For Excelite thick polycarbonate sheeting, mechanical polishing can attain 610-750r/min or use wool pad polishing. When dealing with smaller areas, manual polishing can be done using polishing paste and cotton with uniform pressure. If it’s your first-time do ultra-thick polycarbonate machining, try some offcut material out first to understand material and tools and reliable machining techniques.

Annealing is a standard procedure to make thick polycarbonate sheet and general purpose polycarbonate sheet. Yet, in high-end or ultra-precise applications, further annealing might be needed. This process involves slowly heating the thick polycarbonate sheet to 100±3℃ at 1℃/min and maintaining this for 10min per 1mm thickness. Then, it cools slowly at a rate of 10℃/h back to room.

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sales@exceliteplas.com

+86 135 8555 4902

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