Which material is known for high tensile strength and low elongation while resisting heat?

Kevlar is recognized for its remarkable combination of high tensile strength and low elongation, making it an ideal choice for applications requiring resistance to heat and extreme conditions. Kevlar's molecular structure provides it with superior strength-to-weight ratios, allowing it to withstand significant forces without stretching or deforming. This property is critical in rescue operations where maintaining the integrity of the rope under load is essential for safety and effectiveness. Additionally, Kevlar's ability to perform well at elevated temperatures adds to its suitability in environments where heat exposure is a concern, ensuring reliability during rescue scenarios. Other materials, while having their advantages, do not match Kevlar's unique combination of properties in this context.