What are the downsides of Delrin?
The only downside to Delrin is centerline porosity. A visible centerline is caused by out gassing during manufacturing and can cause problems with machining or moisture permeation through the material. Thus Delrin is not used for most food and medical applications due to the potential for bacteria growth.
What is the difference between delrin and other plastics?
Take Delrin plastic, for instance. Also known as PolyOxyMethylene (POM), Delrin is a brand name for Dupont’s acetal polymer. It has two distinguishing factors when compared to other acetal plastics: A uniform semi-crystalline molecular orientation: This means it is stiffer than other acetal plastics and therefore has more mechanical strength.
Can Delrin be stored on end?
Delrin tends to warp under its own weight. If stored on end, it will develop a bend over time that makes it very difficult to cut evenly in a laser cutter since the beam is focused at a fixed distance from the lens. To keep problems with gravity out of your Delrin side-projects, I’d recommend storing sheets flat.
What does Delrin look like?
Delrin’s natural color is a soft white, but dyes can take it into a range of other colors. Black and white are, by far, the most common, though. In the previous guide, all of the examples were cut from a small range of sheet thicknesses (0.0625 [in], 0.09375 [in], and .125 [in]) sourced from OnlineMetals.
Does Delrin break easily?
As a machined item, Delrin is particularly easy to work with. With PTFE, we need to consider the softness of the material and also its sensitivity to temperatures, with nylons and UHMWPE, we need to be careful of the part melting during machining, with PEEK, the tool itself can break, if we do not control the RPM.
What is Delrin good for?
Delrin Plastic is Ideal for Industrial Applications Parts exposed to a moist or wet environment, such as pump and valve components, are especially appropriate. Other common uses include gears, bearings, bushings, rollers, fittings, and electrical insulator parts.
What is better than Delrin?
Acetal has a better resistance to the effects of hot water and strong caustic solutions with a high pH value when compared to Delrin®. This makes Acetal a better choice for parts and materials handling applications involving the use of strong base chemicals.
How long does Delrin last?
Delrin has outstanding fatigue resistance, almost indefinitely withstanding cyclic compressive/tensile stressing 5,000 psi. Delrin does not permanently deform or retain dents, and has good impact toughness.
Is Delrin stronger than aluminum?
Is Delrin Stronger Than Aluminum? In purely technical terms, aluminum is far stronger than Delrin, but depending on the application, Delrin parts can substitute certain aluminum parts.
Is Delrin stronger than nylon?
Is Delrin stronger than nylon? While both materials are strong and durable, nylon has a higher tensile strength of 12,000 psi than Delrin with 10,000 psi. However, both materials are versatile and have high impact and wear resistance.
Can you cut Delrin?
Trotec and Universal say Delrin is safe to cut as long as you use an air assist and have a good filtration system. Although, some schools have banned laser cutting Delrin because it is known to emit Benzene which is a carcinogen.
What plastic is similar to Delrin?
Here's the main takeaway: While Delrin does have some distinguishing properties, acetal plastics share enough in common that they are often interchangeable based on budget and other project-specific characteristics.
Can you laser cut Delrin?
Delrin® Overview Laser cutting Delrin® with a 10.6 micron wavelength CO2 laser produces clean cuts with smooth edges. Laser engraving Delrin® with a 10.6 micron wavelength CO2 laser can produce a high degree of detail and relief. A 1.06 micron wavelength Fiber laser can be used to laser mark Delrin® in certain cases.
Does Delrin melt?
Melt Temperatures Delrin® acetal resin is a crystalline resin with a melting point of 177°C (350°F).
Does Delrin degrade over time?
Delrin® is stable in well maintained and properly set injection units and hot runner systems. If a small amount of melt degradation does occur, it will not lower molecular weight or cause brittleness (which is the case with almost all other polymers).
Does Delrin absorb water?
Delrin® Homopolymer Delrin® is a family of Acetal Homopolymer whose properties include low water absorption and superior creep resistance, tensile strength, and fatigue endurance.
Ultra High Molecular Weight Polyethylene (UHMW)
UHMW is a low-cost plastic that can be found in everything from hip replacements to military vehicle armor. Its properties and benefits include:
Are Acetal and Delrin the Same?
This is a question we hear a lot, and the confusion is understandable. While all Delrin is acetal, not all acetal is Delrin. (All Chevys are cars, but not all cars are Chevys.) Acetal is the popular name for the PolyOxyMethylene (POM) family of thermoplastics. Acetal is available in two general types of resins: copolymers and homopolymers.
UHMW vs. Delrin: Reading Plastic Has the Answer
With nearly 40 years of experience machining and fabricating plastic, Reading Plastic’s experts can help you choose the right material for your project. If you are debating UHMW vs. Delrin, call us today at 610-926-3245. We will help you source the plastic you need and meet all of your machining and fabrication needs.
Is Delrin a chemical?
Delrin is well-know for being chemically-inert –so much so that it’s nearly impossible to find a glue that bonds Delrin to another surface! While there’s certainly an opportunity to try melting it together in this case, I’ll say, for now, that gluing Delrin is out-of-the-window of possibilities for reliable techniques–especially in models that need to function in some way besides looking nice.
Can you double up Delrin plates?
Spring pins embedded in Delrin can also serve a dual purpose in that you can “double-up” your Delrin plates for thicker geometry. Below, I doubled-up on some eighth-inch plates to better accommodate a flanged bearing.
Does Delrin warp?
Delrin tends to warp under its own weight. If stored on end, it will develop a bend over time that makes it very difficult to cut evenly in a laser cutter since the beam is focused at a fixed distance from the lens. To keep problems with gravity out of your Delrin side-projects, I’d recommend storing sheets flat.
