Which material is resistant to abrasion and commonly used for ropes?

The correct choice, HMPE (High Modulus Polyethylene), is known for its exceptional resistance to abrasion. This characteristic makes it highly suitable for applications where ropes face considerable wear from surfaces or other materials they come into contact with. HMPE fibers are strong yet lightweight, providing excellent tensile strength, which is another reason they are favored in rope manufacturing for rescue operations.

While nylon 6, polyester, and polyolefin also have desirable properties for rope materials—such as elasticity and resistance to degradation—they do not match HMPE in terms of abrasion resistance. Nylon can stretch but may not hold up as well under abrasive conditions. Polyester offers good strength and some UV resistance, but it's still not as abrasion-resistant as HMPE. Polyolefin is lightweight and floats, but again, it lacks the robustness of HMPE in demanding environments. Thus, HMPE stands out as the most suitable material for applications requiring high abrasion resistance.