Should I Use Methyls or Ethyls?

Classic cyanoacrylates are represented by ethyl and methyl chemistries. Generally, the methyls offer better bond strengths on metals, the ethyls providing better strengths on everything else. Substrate selection and bond line configuration directly influence adhesive performance.

For example, two polished bare metal surfaces are best bonded with a methyl grade. By comparison, better results would be generated by an ethyl grade when bonding a single bare metal surface, such as an emblem to an automobile fender. Why? The automobile fender is painted, and while composed of metal, the adhesive is in contact with the acrylic paint layer, a plastic surface. To summarize; use methyls when bonding bare metal-to-metal, ethlys for everything else.

About Hernon Manufacturing
Hernon manufactures over 400 grades of high performance military and industrial grade adhesives, sealants, coatings and related equipment. Hernon’s products are being used successfully in many demanding industries such as: aerospace, automotive and marine. Hernon also provides many solutions in diverse applications such as: ammunition, appliance, audio, custom jewelry, toys, defense, electrical, electronics, heavy vehicle and weapons. For more information, visit their website at http://www.hernon.com or call 800-527-0004.