Navigating Auto Transport: Understanding Grade 70 and Grade 43 Chains

Auto transport requires careful consideration of equipment to ensure the safe and secure transportation of vehicles. Chains play a crucial role in this process, providing the strength and reliability needed to secure vehicles during transit. In this article, we'll explore the differences between Grade 70 and Grade 43 chains, their respective strengths, and when they can be used in auto transport scenarios.
  • understanding

    grade 70 chains

    Grade 70 chains, also known as transport chains, are designed specifically for cargo securement applications. They are made from high-strength carbon steel and are heat-treated for durability and resistance to wear and deformation. Grade 70 chains are characterized by their gold chromate finish and are identifiable by markings such as "G70" or "70."
  • understanding

    grade 43 chains

    Grade 43 chains, commonly referred to as high-test chains, are also made from carbon steel but have a lower tensile strength compared to Grade 70 chains. They are not heat-treated and may have a galvanized or uncoated finish. Grade 43 chains are identifiable by markings such as "G43" or "43."


in Strength and Application

Tensile Strength:

  • Grade 70 chains have a higher tensile strength, typically ranging from 18,000 to 24,000 pounds, making them suitable for heavy-duty applications.
  • Grade 43 chains have a lower tensile strength, typically ranging from 11,300 to 14,000 pounds, making them suitable for lighter loads or less demanding applications.

Durability and Resistance:

  • Grade 70 chains are heat-treated for enhanced durability and resistance to wear, deformation, and corrosion, making them ideal for long-term use in harsh conditions.
  • Grade 43 chains may be more susceptible to wear and corrosion due to their lower-grade construction, requiring more frequent inspection and maintenance.

Regulatory Compliance:

  • Grade 70 chains are commonly used in compliance with Department of Transportation (DOT) regulations for cargo securement in the transportation industry.
  • Grade 43 chains may be suitable for certain auto transport applications but may not meet the requirements for heavy-duty or commercial use.


When Can They Both Be Used?

  • Lighter Loads

    Grade 70 chains are typically preferred for securing heavier vehicles or loads, such as trucks, buses, or construction equipment. Grade 43 chains may be suitable for securing lighter vehicles or loads, such as passenger cars, motorcycles, or small trailers.
  • Non-Commercial Use

    Grade 70 chains are recommended for commercial auto transport operations where heavy-duty securement is required to comply with regulatory standards. Grade 43 chains may be used for non-commercial auto transport scenarios, such as personal vehicle transportation or recreational hauling, where less stringent requirements apply.

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