Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Initial Area Square Millimeters (mm²)

Required number input.

Final Area Square Millimeters (mm²)

Required number input.

Extrusion area ratio of starting billet cross section to final extrudate cross section. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Extrusion Ratio

The resulting extrusion ratio returned as a number.

• Forming-force and reduction estimates depend on material flow stress, temperature, strain rate, friction, die geometry, redundant work, anisotropy, lubrication, and machine stiffness. Process windows and defects require material-specific data or simulation.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Extrusion Pressure

  Ideal frictionless extrusion pressure from a supplied mean flow stress times ln(initial area/final area); actual die pressure may be higher.

• Wire Cross Section

  Circular solid conductor cross-sectional area from measured diameter, excluding insulation.

• Flow Rate Velocity Area

  Volumetric flow rate from mean cross-sectional velocity and flow area.