Stretcher Leveling Basics

May 14, 2024 | Stretcher Leveling

Stretcher Leveling Basics

Stretcher leveling is a critical process in steel processing that ensures flat, stress-free metal sheets and plates. This method is particularly valuable in various industries where precision and material stability are paramount, such as automotive, construction, and aerospace.

What is Stretcher Leveling?

Stretcher leveling involves stretching the metal sheet or plate beyond its yield point, effectively removing internal stresses and ensuring the material remains flat during subsequent processing. Unlike temper passing, which compresses the steel, stretcher leveling stretches the material, resulting in more stable and flat products​.

Key Benefits of Stretcher Leveling

  1. Stress Elimination: By stretching the material beyond its yield point, stretcher leveling eliminates internal stresses that could cause the material to spring back or warp during cutting, welding, or forming.
  2. Improved Flatness: The process ensures that the metal remains flat and stable, which is crucial for precision applications in industries like automotive manufacturing and aerospace​.
  3. Versatility: This process can be applied to various types of steel, including hot rolled, cold rolled, and coated steel products. It accommodates different material thicknesses and coil weights, making it suitable for a wide range of applications​.

Stretcher Leveling Capabilities

Companies like Alliance Steel and Kloeckner Metals offer advanced stretcher leveling services. For instance, Alliance Steel’s equipment can handle material thicknesses ranging from .040″ to .375″ and coils up to 80,000 lbs​. Similarly, Kloeckner Metals’ stretcher levelers are designed to handle diverse materials, providing consistent quality and flatness​.

Applications in Various Industries

  • Automotive: Ensures flat steel for body panels and structural components, improving fit and finish.
  • Construction: Provides stable, flat steel sheets for building frameworks and architectural elements.
  • Aerospace: Delivers precision materials that meet stringent specifications for aircraft manufacturing​.


Stretcher leveling is an essential process in steel processing, providing significant benefits in terms of material flatness and stability. By understanding and leveraging this process, manufacturers can ensure higher quality and performance in their final products.

Stretcher Leveling

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