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Author: Admin | 2025-04-28
Destructive testing to take place. Full test results and certificates are normally supplied with the chain which is normally shipped in 50-m matched pairs. Elongation at test force and total elongation at fracture are also graphed during this destructive test. The Optimum Chain The object is to combine all of these characteristics to create the optimum chain, which includes the following performance: • Higher tensile strength; • Higher resistance to inner link wear; • High resistance to sprocket damage; • Greater resistance to martensitic cracking; • Improved toughness; • Increased fatigue life; and • Resistance to SCC. However, there is no one perfect solution, only various compromises. A high yield point will tend to result in high residual stress, if associated with high hardness to increase wear resistance, it will also tend to decrease toughness and resistance to stress corrosion. Manufacturers are continually striving to develop chain that will run longer and survive difficult conditions. Some manufacturers galvanize chain to deal with corrosive environments. Another option is COR-X chain, which is made from a patented vanadium, nickel, chromium, and molybdenum alloy fights SCC. What makes this solution unique is that the anti-stress corrosion properties are homogenous throughout the chain’s metallurgical structure and its effectiveness does not change as the chain wears. COR-X has proven to increase chain life substantially in corrosive environments and virtually eliminate failure due to stress corrosion. Tests have established that breaking and operating force is increased 10%. Notch impact is increased 40% and resistance to SCC
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