Wire Drawing & Rod Processing worked example

Tensile Draw Ratio with entry cross-section of 50 units: a worked example

Suppose entry cross-section falls to 50 units. This page works the full calculation at that level so you can see exactly which result moves and by how much. Tensile Draw Ratio combines the geometric factors of a drawing pass — entry cross-section, reduction, and the conversion and efficiency multipliers you apply — into a single ratio that tracks how hard the wire is being worked and, with it, how much the material strain-hardens.

The inputs for this scenario

  • Entry cross-section (or area factor): 50 units (the input this scenario stresses; the baseline uses 100)
  • Reduction / draw factor: 4 units (held at the documented default)
  • Area-to-ratio conversion factor: 0.01 x (held at the documented default)
  • Process efficiency multiplier: 1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Tensile Draw Ratio = first factor × second factor × conversion factor × process multiplier.
  • Result works out to 1 units at these inputs, and this is the headline figure for the scenario.
  • Base product works out to 1 value at these inputs.
  • Multiplier works out to 1 x at these inputs.
  • Factor A x B works out to 200 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where entry cross-section sits at 100 units and the headline result is 2 units, this scenario comes in 50% below the baseline at 1 units.
  • It multiplies the entry cross-section, reduction factor, an area-to-ratio conversion, and a process efficiency multiplier into a single tensile draw ratio. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Result: 1 units (headline result)
  • Base product: 1 value
  • Multiplier: 1 x
  • Factor A x B: 200 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Tensile Draw Ratio calculator, set entry cross-section to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.