Acetal is the common name for a family of thermoplastics with the chemical name "PolyOxyMethylene", or POM. Acetal is available in two general types of resins: Copolymer acetal (POM-C), and homopolymer acetal (POM-H); commonly called Delrin®. Each type of acetal has its own set of advantages and disadvantages..
Just so, what type of plastic is acetal?
thermoplastic
Additionally, what is the difference between Delrin and UHMW? UHMW has surface and chemical properties that are rare to find in high-performance polymers. It is very resistant to most chemicals, UV radiation, and micro-organisms, but doesn't have the same creep resistance as Delrin.
Subsequently, one may also ask, is Delrin expensive?
Delrin has a higher melting point, is a little stronger, and has a few other slightly more initially desirable properties. If you are machining a small hole through the center of an extruded rod of POM, the copolymer may be a better choice in this case. The name brand is usually more expensive.
What is Delrin rod used for?
Common uses for Delrin Rod (POM-H) Delrin rod is commonly used for gear wheels, cams, bearings, and rollers. Good electrical insulating and dielectric properties of Delrin makes it a good choice for electrically insulating components.
Related Question Answers
What is acetal used for?
Polyoxymethylene also known as acetal plastic is a thermoplastic material that widely used in automotive and electronic industries. The material required has low friction, high stiffness and excellent dimension stability. Acetal is mostly used in gear wheels, eyeglasses, ball bearing and locking systems.Can acetal be recycled?
Acetal can be reground and recycled, but it's usually used in such small quantites (gears, rotating comonents etc.) that it's highly unlikely that it will end up being reused.What is polyacetal made of?
Polyacetal, also known as acetal or polyoxymethylene (POM), is a formaldehyde-based, semi-crystalline engineering thermoplastic containing the functional group of a carbon bonded to two -OR groups. Other names of POM are Polyformaldehyde, Polymethylene glycol, Polyoxymethylene glycol. It is 100% recyclable.How strong is acetal plastic?
The impact-modified acetal copolymer resins have a good balance of toughness and rigidity, with modulus of elasticity as high as 305,000 psi. This compares to 435,000 psi for general-purpose acetal copolymer resin with 1.3 ft-lb/in. notched Izod. Acetal copolymers have excellent resistance to chemicals and solvents.What is polyethylene made of?
Polyethylene is used in applications ranging for films, tubes, plastic parts, laminates, etc. in several markets (packaging, automotive, electrical, etc.). Polyethylene is made from the polymerization of ethylene (or ethene) monomer. Polyethylene chemical formula is (C2H4)n.Is acetal stronger than nylon?
Acetal is a thermoplastic polymer material. In looks it is shinier than Nylon. It is well known for its excellent tensile strength and chemical resistance. acetal is slightly lighter than nylon but there is not a large difference between the two.Is nylon or plastic stronger?
Nylon. Nylon is a flexible, durable plastic with less strength and stiffness than both PLA and ABS. Its malleability lends it much more toughness than the other two, however, with an impact resistance ten times that of ABS.What is acetal material?
Acetal or Polyoxymethylene (POM), commonly known under DuPont's brand name Delrin®, is an engineering thermoplastic. It is a lightweight, low-friction and wear-resistant material with good physical and processing properties.Is Delrin waterproof?
Constructed from Delrin—a stiff, low-friction thermoplastic with excellent dimensional stability—both capsules feature a waterproof O-ring seal to protect your things from liquid damage and inclement weather.Is Delrin stronger than nylon?
I think Delrin is a much better choice than Nylon indeed a much better choice than anything for threading. Nylon and other plastics like UHMW polyethylene are a bit flexible and do not cut nice threads because they tend to run away from the tool. They are also nowhere near as strong as Delrin.Is Delrin stronger than aluminum?
Of course 7075 aluminum is much stronger than delrin. The tensile strength of 7075 is at least 55000 psi depending on temper and what not. Delrin has a 9000 psi tensile strength.Does acetal need drying?
Celcon® acetal does not readily absorb moisture and can normally be fed to the extruder or molding machine without drying. However, if the material has adsorbed moisture due to improper handling or storage, drying may be necessary to prevent splay and odor problems during processing.What is the difference between Delrin and Teflon?
Acetal and Delrin AF® are both thermoplastics; meaning that these materials can be heated into a liquid form and then cooled into a solid retaining the shape of either the extrusion nozzle or the mold used to shape it. PTFE has the lowest friction constant of any plastic material. Delrin has a melting point of 175°C.Does acetal absorb water?
(Acetron® GP, Tecaform®) Manufactured from resin specifically formulated for wear applications, Acetal copolymer offers excellent mechanical and bearing properties plus dimensional stability, stiffness, and low water absorption. It is resistant to hydrocarbons, ketones, esters, and hot water.Is Delrin brittle?
Thermal Properties Delrin does not use plasticizing for toughness: and so does not become brittle at low temperatures. Impact resistance at -40° F is only 20% less than that at room temperature.Is Delrin a polycarbonate?
Polycarbonate:strong, not brittle, less clear, nasty cut, soft surface. Delrin: hard, slippery, strong, not brittle.Is Delrin porous?
Delrin® acetal homopolymer (POM-H) offers slightly higher mechanical properties than acetal copolymer, but can often contain a low density center – also known as "center line porosity” – especially in large cross-sections. Delrin® also gives slightly less chemical resistance than copolymer acetal.Can UHMW be welded?
Yes, UHMW can be welded. Virgin UHMW is preferable but factory regrind is also weldable. Some UHMW with silicone and other additives is not weldable. The only way to know if it can be welded is to try it.Does UHMW float in water?
The UHMW must be allowed to expand or float. 
