POLYETHYLENE LDPE These sheets can be heat formed, shaped and welded to fabricate ducts, hoods, and much more. They have excellent corrosion resistance to a wide range of items. Polyethylene is susceptible to stress cracking when exposed to ultraviolet and some chemicals. Wetting agents such as detergents accelerate stress cracking. It cannot be cemented but easily welded with a plastic welder. LDPE can be cut with a wood saw and drilled with regular metal bits. Not UV stabilized but does meet FDA standards. The Low Density Polyethylene has a .92 density. Semi-rigid with good impact resistance and abrasion resistance. It is white translucent with working temps of 0-140 deg F. and a forming temp of 245 deg F.