The Unbreakable Strength of Paracord: Understanding Its Construction and Durability

Paracord, a versatile and durable material, has long been a favorite in survival gear and military applications. One of the key factors behind its effectiveness is its strength. This article delves into why paracord, particularly the Type III variety, is so impressive in terms of its tensile strength and its construction methods that enhance its overall durability.

Understanding Tensile Strength

Tensile strength is a critical property that indicates how much stress a material can withstand before breaking. For paracord, the primary measure of tensile strength is the amount of force it can handle before it fractures. Type III paracord, the most common version, has a remarkable tensile strength of 550 pounds.

Varied Types of Paracord

Paracord is not a one-size-fits-all material. Different types of paracord are rated based on their tensile strength, offering a range from 95 pounds to 750 pounds. The strength ratings provide users with a clear understanding of the applications for which each type is suitable. Type III, with its 550-pound rating, is versatile and found in various applications, from camping to tactical gear.

How Paracord Construction Imparts Strength

The secret to paracord's strength lies in its construction. The most durable and robust type of paracord, Type III, is built using a technique known as kernmantel construction. This method is favored for its ability to distribute the stress throughout the cord, making it resistant to wear and tear. Here's a breakdown of the construction:

Inner Core ( kern): The core of the paracord, consisting of 7 individual strands, forms the inner foundation. These strands are each about the thickness of a human hair, made from nylon. The inner core provides the core strength of the cord. Outer Sheath ( mantle): Encasing the inner core is a sheath woven from 32 strands, forming the outer mantle. This layer is crucial for protection and wear resistance. Each strand in the sheath is also made of nylon, making it highly durable.

Each of these individual strands is pliable on its own, but when combined through the kernmantel construction, they create a formidable structure. The strength arises from the additive properties of bundling: while individual strands might not be incredibly strong, the combination of many smaller, bundled strands provides a significant increase in tensile strength. This strategy mimics the function of biological tissues, such as tendons and muscles, in the human body.

Benefits and Applications of Kernmantel Construction

The kernmantel construction technique offers several benefits that ensure the longevity and reliability of paracord:

Resilience: The bundled construction ensures that the cord can withstand significant pulling forces without breaking. This makes it ideal for high-stress applications. Flexibility: Even though it is strong, a paracord made with kernmantel construction remains flexible, allowing for easy knotting and tying. Durability: The outer sheath protects the inner core, providing additional protection against abrasions and UV damage.

Conclusion

Paracord's strength is not merely a function of its materials but the result of a clever construction method that effectively combines the strengths of its individual strands. Type III paracord, in particular, offers a balance of flexibility, durability, and strength, making it a preferred material in various applications ranging from emergency preparedness to outdoor activities. Understanding the construction and tensile strength of paracord can help users choose the right type for their specific needs, ensuring both safety and reliability.

Keywords: paracord strength, kernmantel construction, tensile strength