Chain - High Test 40/43

Superior Strength for Demanding Applications

Grade 43 chain, commonly called High Test, is manufactured to meet ASTM and NACM specifications and represents a significant upgrade over standard proof coil chain. Made from a higher carbon steel, its strength surpasses proof coil working load limits, size for size, by a factor of 2 to 1, making it the preferred choice for trucking professionals, contractors, and anyone who demands reliable performance in load securement applications.

Grade 43 "High Test" chain is used extensively in the trucking industry for binder chains, logging and tow chains. The designation "40/43" refers to the grade markings stamped on the chain links—hallmarked every 1 to 3 feet with manufacturer's symbol and grade marking: 4, 40, 43 or 400—which allow for easy identification and compliance verification during transport operations.

Understanding Working Load Limits and Safety

High test chain delivers impressive strength across a range of sizes. With working load limits up to 20,200 lbs, it provides the ideal balance of strength, durability, and cost efficiency for the trucking and transport industries. However, it's critical to understand the application limitations: Grade 43 high test chain is designed for load securement and general-purpose applications but is not approved for overhead lifting. This chain excels in horizontal pulling, tie-down, towing, and cargo control scenarios where its high tensile strength and wear resistance shine.

All GR 43 binder chains go through extensive testing to confirm their capabilities. This test gets performed at two times the working load limit (WLL) and meets NACM and ASTM A413 standards, ensuring that every length of chain meets rigorous safety requirements before it reaches your hands.

Trusted Manufacturers

When selecting high test chain, brand reputation matters. HWH has built a strong reputation in the industrial chain market, offering reliable Grade 43 solutions that meet the demands of professional operators. Acco Peerless Chain brings decades of manufacturing expertise to the table, with Grade 43 High Test Chain features both high tensile strength and resistance to wear needed by modern hauling and heavy duty trucking, farm and construction firms. Working Load Limits exceed those of ordinary low carbon or general utility chain.

Key Considerations When Selecting Chain

Choosing the right Grade 43 chain involves more than just matching diameter to your application. Consider the finish options available: Options include self-colored (raw steel), hot-dipped galvanized, and zinc-plated finishes. Each finish offers varying degrees of corrosion resistance, with galvanized finishes providing enhanced protection against rust and wear. For outdoor storage, marine environments, or wet conditions, investing in a corrosion-resistant finish extends chain life significantly.

Always inspect your chain before each use, checking for wear, distortion, cracks, or corrosion that could compromise safety. Remember that any tie-down system is only as strong as its weakest component—ensure that hooks, binders, and attachment points are rated appropriately for your chain's working load limit.