Item Thickness String:1 Inches | Item Width String:12 inches | Item Length String:12 Inches | Number of Items:1 The opaque white UHMW sheet has a standard tolerance and meets American Society for Testing and Materials ASTM D4020 specifications. UHMW (ultra high molecular weight) polyethylene is an impact-, chemical-, and moisture-resistant plastic that has excellent abrasion resistance and a low-friction surface. UHMW is more rigid than LDPE and HDPE, and has better abrasion resistance than PTFE.Plastic refers to a group of synthetic or semi-synthetic materials that have been engineered to achieve specific properties. The most notable characteristics of plastics are its low weight, machinability, corrosion resistance, and typically good thermal and electrical insulating properties. Certain plastic grades also offer optical transparency similar to glass, low-friction or self-lubricating surfaces, and exceptional impact resistance. Depending on their properties, certain plastic grades can be used as alternatives to metal, glass, and ceramic. Unlike metal, plastic may experience creep, which is deformation caused by longtime exposure to a constant load.Tensile strength, used to indicate the material’s overall strength, is the peak stress it can withstand before it breaks. Corrosion resistance describes the material's ability to prevent deterioration caused by atmosphere, moisture, or other medium. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Toughness describes the material's ability to absorb energy before breaking, while hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation. Impact resistance is the measure of a material’s ability to absorb a shock of energy before breaking.
R**S
Exactly what I needed!
This stuff works great! I ordered a 12''x12''x1/4'' thick sheet. I used it to modify a set of J-hooks in my gym so that they won't damage my bars with metal to metal contact. This UHMW sheet worked great for that purpose.All I did was drill and tap the J-hooks, then countersink the UHMW sheet cut-outs. It's been holding up great for about a month now. There was a ton left over, so if it ever wears out it will be a quick and easy replacement. I don't see them wearing out any time soon though. They have held up great so far.
M**S
Faces are not smooth
Meets my needs but it will take a bit of work. Ordered 12 x 12 x 3/4 piece. Thickness OK at 0.76. 3/16 short of 12" on both sides so a bit disappointing there. Piece is perfectly flat so I didn't have the warping that was reported for thinner pieces. The main problem is what others have noted: the specification says the faces have a smooth finish, but they are in fact deeply scored. Both sides in this case, looks like a circular saw was used to cut the piece from a block. It's going to take a lot of work to get this as smooth as I want because PTFE doesn't sand very easily. But, I do appreciate the convenience of being able to get a piece of the right dimensions so quickly. So three stars for convenience, but I was hoping for a five star finish.
G**N
1/4" very tough material, perfect for my projects
This 12" x 12" sheet came with slick surfaces front and back. (I don't care, but wanted to mention it for anyone expecting a matte or textured surface.) This is very tough material. Before I started my project (linkage guard for off-road motorcycle/high-impact application), I took it out back and put it on top of a cinder block, then used a hammer to attempt to break off a 1" corner section. It didn't flinch at all, and mind you this is only 1/4" thick. It did eventually bend a little after repeated pounding but no sign of cracking, splintering or breakage. When I tried to cut it with a hack saw, it fought me hard. I'll have to borrow my buddy's band saw to get the cuts I need without pulling a muscle.
U**S
Misleading product information
In the product description it said"Exterior Finish Smooth"which indicated to me that the top and bottom of the sheetwould be smooth. But when I received it there were saw linesrunning through the face on both sides, enough that you not onlycould see them but feel them easily with you fingers, very rough lines.I expected that there may be some rough saw lines on the 1/2" edgesbut not on both the 12"X12" face surfaces.I had to sand both sides down to use for my application,and this stuff is pretty tough and it wasn't all that easy to do.If the description had said'Exterior Finish Rough' I would have either looked elsewhere or ordered HDPEwhich is a little easier to work with and could have sanded it a little easier.So if you need the face of both sides smooth like I did this is not for you.Don't expect the faces to be smooth as the description indicates.
R**H
so if you are expecting flat stock you will likely be disappointed. The 12"x12" 3/8" thick piece I received had ...
As many others have noted, the advertised sizes are not exact so be forewarned there. As others have also noted, some of the pieces are *seriously* warped, so if you are expecting flat stock you will likely be disappointed. The 12"x12" 3/8" thick piece I received had a 1.125" twist (see photo)
B**A
Not so flat
The first 2 pieces had a warp of about 3/16 out of flatness over 12" square. The replacements were only .030" out of flatness, so they were usable for my project. This material is significantly susceptible to thermal changes (it shrinks or grows with temperature changes). If it is not held flat mechanically or allowed to grow/shrink without constraints, then it will warp.
J**F
Badly Bowed
This item was not flat, was bowed a lot. It was shipped separately laying on a lot of crumbled filler packing paper. Maybe it would have arrived flatter if it had been laying flat in the box.Bought this UHMW to make zero-clearance table saw inserts. I don't think it will be satiable for this application. I heated the sheet up with a heat gun and laid a heavy box on top during cool down. Most of the bow was gone but not sure if it will stay that way over time. Still not flat enough for saw table inserts. Affixing the cut sheet to a ridged surface such as a table saw or router fence and jigs would work better providing the edges and corners stay flat.UHMW is a good product, the flatness is just too unstable for my application. I may order some Phenolic 'glass grade' sheet in this size but it will cost much more.The actual size of the sheet was 1/8" x 11 3/4" x 23 3/4".
B**C
Slighty warped but otherwise fine
Excellent sheet but did come in warped, a little time in the oven fixed it.
S**D
Slick
My use for this material was not conventional. I built a few standing gardens which sit in my pave covered yard, but rather than purchase wheels for something that won't be moving much I used this material cut into 6x6 pads to use as feet. The material is very tough and "gliding" the standing gardens over the pave, while not easy, is at least possible compared dragging the bare wood. The material leaves no marks on the pave, and that's saying something considering the gardens are a good 400lbs each.This material is crazy slick but not *smooth*. You can see the minute pour pattern from the manufacturing process. Personally I consider it smooth, but if you are OCD then the material is simply *slick*. The pattern of pour lines offer zero resistance and I was not able to hold the material vertically in one hand without it immediately escaping my grasp.
S**S
Perfect Spacer Material
I needed some material to act as a spacer between my teardrop trailer wall and the door hinge. I needed something that wouldn't compress; something that wouldn't absorb water; something that wouldn't deteriorate in sunlight. and this worked perfectly.It cut will with a saw; carved will with a sharp knife and drilled easily. Perfect solution to what seemed like a perplexing problem.
H**A
the surface is rigid and tons of wrinkle lines everywhere.
The surface is filled with rigid lines everywhere and there is even one huge big curving line that I will need to work super hard to get rid of. I will need to spend time and money to sand and make the surface useable. And this goes on both sides. The photo is not what you get. Consider you be warned
A**R
Not quite 12 x 12 inches
Sheet of UHMW PE arrived quickly and in good condition. Removed one star because sheet is actually 11 3/4 by 11 3/4" instead of the advertised 12 x 12 inches. I had to adjust the dimensions of my project to compensate. Not fun at all.
D**N
Not quite the size it states
When I got it, first thing I did was measure it. It's 11 13/16" x 11 13/16", not the 12 x 12 it says.May not seem like a big issue, but then you're counting on the full size, it really screws things up.
Trustpilot
5 days ago
2 weeks ago