What material is high-modulus polyethylene also known as?

High-modulus polyethylene is known as Spectra, which is a brand of a fiber made from ultra-high-molecular-weight polyethylene. This material is renowned for its high strength-to-weight ratio, making it an ideal choice for various applications, particularly in the field of rope rescue. Spectra is commonly utilized in rescue equipment, as it offers excellent durability, resistance to abrasion, and low stretch characteristics.

While Dyneema is another type of high-performance polyethylene fiber and is often used interchangeably with Spectra in various applications, the specific identification of high-modulus polyethylene as Spectra is what makes this answer correct in the context of the question.

Paracord, on the other hand, is a general term for a lightweight nylon rope that is often used for various purposes, including outdoor and survival gear but does not have the same high-modulus properties. Kevlar is a different type of material made from aramid fibers, known primarily for its heat resistance and strength, but it is not a type of high-modulus polyethylene.