Natural Polypropylene Sheet 1–50mm | Chemical-Resistant Plastic

Natural (white) polypropylene sheet, 1mm to 50mm thick, supplied as ready-cut panels from 250 x 250mm up to full 3000 x 1500mm sheets. PP is the lightest common engineering plastic, shrugs off most acids, alkalis and solvents, absorbs virtually no water and can be cut, machined and plastic-welded with standard workshop tools.

All sizes are stated in millimetres as Length x Width. Choose a thickness, then a panel size, and the price updates to the exact panel you receive.

Why Choose Natural Polypropylene?

• Chemical resistant: resists most acids, alkalis, salts and many solvents - the standard choice for plating, etching and chemical tanks.
• Lightweight: density approx. 0.91 g/cm³ - it floats, and weighs about two-thirds of PVC and a third of aluminium for the same size panel.
• Zero rot, zero rust: water absorption below 0.1%, so it will not swell, delaminate or corrode in wet areas.
• Hygienic: smooth, non-porous, easy to wash down; natural grade contains no colour pigment.
• Weldable: hot-air, extrusion and butt welding give strong, leak-tight seams for tanks, trays and ducting.
• Electrical insulator: ideal for covers, guards and enclosures.

Typical Applications

• Chemical, plating and water tanks, tank linings and sumps
• Laboratory benches, fume cupboard linings and drip trays
• Food-processing guards, chopping and cutting surfaces, hoppers and chutes
• Machine guards, wear strips, spacers and packers
• Ductwork, extraction hoods and fabricated enclosures
• Marine, aquarium, pond and hydroponic fabrication

Technical Specification (typical values)

Values are typical for PP-H sheet and are provided as a guide only, not a specification. Thickness and cut size are subject to normal manufacturing and sawing tolerances.

Sheet Weight Guide

Useful for handling and delivery planning. Weight = 0.905 x thickness (mm) per m².

Which Thickness Do I Need?

• 1-3mm: linings, splash panels, templates, drawer and tray bases, flexible covers.
• 4-6mm: small tanks and trays, guards, light-duty panels and enclosures.
• 8-12mm: tank walls, bench tops, cutting boards, rigid machine guards.
• 15-25mm: large tank walls and bases, heavy-duty chopping blocks, structural fabrication.
• 30-50mm: machined components, wear blocks, spacers, bearing pads.

Working With Polypropylene

• Cutting: thin sheet scores and snaps or cuts with a fine-tooth saw; thicker sheet cuts cleanly on a table saw, bandsaw, jigsaw or CNC router. Use sharp tungsten-carbide blades and moderate feed to avoid melting.
• Drilling and machining: machines well with standard HSS or carbide tooling; allow for thermal expansion when fixing large panels.
• Joining: PP is very hard to glue - plastic welding or mechanical fixings (bolts, rivets, screws) give the best result.
• Cleaning: wash with warm soapy water or standard food-area detergents.

Frequently Asked Questions

What sizes are available?
16 thicknesses from 1mm to 50mm and 10 panel sizes from 250 x 250mm up to full 3000 x 1500mm sheets. Not every panel size is offered in every thickness.

What does "Panel Size (L x W)" mean?
Length x Width in millimetres. For example, 1000 x 500mm is a panel 1 metre long and half a metre wide.

Can it withstand chemical exposure?
Yes - it resists most acids, alkalis and salt solutions. Strong oxidising acids, aromatic and chlorinated solvents can attack it, especially when hot, so check compatibility for your chemical and temperature.

Is it suitable for outdoor use?
Natural PP is not UV stabilised and will become brittle with long-term sunlight exposure. It is best used indoors or in shaded locations.

Is it food safe?
Natural polypropylene is widely used in food-processing environments. If you need a food-contact compliance declaration for your application, contact us before ordering.

Can it be welded?
Yes - PP welds very well using hot-air or extrusion welders with PP filler rod.

Can I glue it?
Standard adhesives do not bond reliably to PP. Use welding or mechanical fixings.

How hot can it get?
Suitable for continuous use up to around 100°C. Homopolymer PP becomes more brittle near and below freezing, so avoid impact loads in cold conditions.

Need a size that isn't listed?
Buy the next panel size up and trim to size, or contact us for a quote on custom cut pieces.