Grade 80 is the industry standard grade for high-strength alloy rigging, belonging to the internationally recognized rigging strength grading system (common grades also include Grade 100), and the core refers to the material mechanical performance grade of rigging products (such as hooks, swivels, chains, connectors, rings etc.).

This level is not specific to a particular product form, but is defined by strict material composition (usually chromium molybdenum alloy structural steel) and heat treatment processes (quenching+tempering). Its strength indicators must comply with international standards (such as ISO 8189, EN 818, etc.), and it is a typical representative of "high-strength, high reliability" rigging in high load scenarios such as industry and fisheries.

(1) Outstanding strength and load capacity

The tensile strength reaches over 800MPa, far exceeding ordinary carbon steel rigging, and can withstand greater tensile forces under the same size.After quenching and tempering treatment, the material has excellent toughness and can withstand sudden impact loads in scenarios such as lifting and hoisting, and is not easily broken or deformed.

(2) Better corrosion resistance and durability

Mostly made of chromium molybdenum alloy steel, it has strong resistance to corrosive environments such as seawater, salt spray, and moisture, especially suitable for humid environments such as fishing.

The wear and fatigue life is 2-3 times that of ordinary carbon steel rigging, reducing the cost of frequent replacement and downtime.

(3) High safety factor, reducing operational risks

Compliant with international standards such as ISO 8189, it requires multiple tests such as tensile and impact testing. The safety factor for rated load (WLL) is usually above 4:1.

Stable performance in the face of extreme loads (such as bottom trawling and severe sea conditions), reducing the risk of sudden failures such as chain breakage and detachment, and ensuring operational safety.