Tube, Pipe & Profile Forming worked example

Hydroforming Pressure with baseline internal forming pressure of 50 units: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop baseline internal forming pressure to 50 units, then walk the calculation through step by step. Hydroforming Pressure scales a baseline internal pressure by an intensification factor to estimate the total forming pressure a tube or panel sees, then reduces it to an hourly-equivalent figure for cycle planning.

The inputs for this scenario

  • Baseline internal forming pressure: 50 units (the input this scenario stresses; the baseline uses 100)
  • Pressure intensification factor for the part: 1.2 x (held at the documented default)
  • Press cycle or fill time: 8 hr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Hydroforming Pressure load = input load × load factor.
  • Total load works out to 60 psi at these inputs, and this is the headline figure for the scenario.
  • Hourly equivalent works out to 7.5 psi / hr at these inputs.
  • Input load works out to 50 psi at these inputs.
  • Load factor works out to 1.2 x at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where baseline internal forming pressure sits at 100 units and the headline result is 120 psi, this scenario comes in 50% below the baseline at 60 psi.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to baseline internal forming pressure, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats intensification as a single multiplier and cycle time as uniform - it does not model the pressure-versus-displacement curve, seal friction, or the axial feed that real hydroforming requires.

Results at a glance

  • Total load: 60 psi (headline result)
  • Hourly equivalent: 7.5 psi / hr
  • Input load: 50 psi
  • Load factor: 1.2 x

Run it with your numbers

  • To rerun this with your own numbers, open the live Hydroforming Pressure calculator, set baseline internal forming pressure to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.