How a Hinge Leaf Is Made

Primary process: Stamping (Progressive Die). The full route, materials, tolerances and design tips for a hinge leaf, with an indicative cost.

Stamping (Progressive Die)Primary process
Sheet formingFamily
7Route steps
+/-0.05mmTypical tol.

A hinge leaf is primarily made by Stamping (Progressive Die). Stamping runs sheet metal through a press with progressive dies that blank, pierce, form and coin the part in successive stations at high speed. Below is the full route to make a hinge leaf, the materials it suits, the tolerances to expect and the main design points. The route is free, from the finder.

Step by step

How a hinge leaf is made

The usual route, raw material to finished part. The amber step is where the hinge leaf gets its basic shape.

  1. Material

    Select the sheet grade and gauge for the hinge leaf.
  2. Blanking

    Cut the flat blank, by laser for low volume or a blanking die at scale.
    Tooling Low (laser) to high (die)   Tolerance ±0.05 to 0.3mm   Lead days to weeks
  3. Stamping (Progressive Die)

    Form the blank into the hinge leaf.
    Tooling Very high   Tolerance ±0.05 to 0.25mm   Lead 12 to 24 weeks
  4. Secondary features

    Punch or drill the holes and cut-outs the part needs.
    Tooling None   Tolerance ±0.05 to 0.2mm   Lead hours to days
  5. Joining

    Spot weld, fasten or bond into the assembly where the hinge leaf is more than one piece.
    Tooling Medium   Tolerance joint   Lead immediate
  6. Finish

    Deburr the edges and powder coat or plate for protection and colour.
    Tooling Low   Tolerance adds 0.05 to 0.2mm   Lead days
  7. Inspection

    Check formed dimensions, hole positions and flatness.

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Precision

Tolerances to expect

TYPICAL TOLERANCE IT CAN HOLD
+/-0.05mm typicalcoarsefine+/-1mm+/-0.1mm+/-0.01mm+/-0.005mm
Where this process typically lands. Tighter is possible with extra operations like grinding, at higher cost.
Materials

Materials for a hinge leaf

GradeWhy it suits this
Mild/HSLA steelCheap, formable
Spring steel/temperSpringy contacts
Brass/phosphor bronzeConductive, springy
Design

Design tips

General pointers. The full design-for-manufacturing list for a hinge leaf is in the dossier.

  • Features too close together. Respect web/edge minimums.
  • Burr direction unspecified. Call out burr side.
Cost

What a hinge leaf should cost

Terminals, brackets, clips at huge volume; the progressive die is everything, piece cost is tiny.

PER-PART COST vs VOLUME
one-offat volumeVolume per order, low to highCost per part
Per-part cost drops as volume spreads tooling and setup over more parts. The exact figures for a hinge leaf at your volume, in your currency, are in the dossier.
MODEL EST.
$0.31 to 0.66 per part at 1,000 off
A rough ballpark only. The dossier gives should-cost at your exact volume and currency, with the full breakdown.
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Everything you need to quote and source it

The free route above is yours. To actually put a number on a hinge leaf and buy it well:

  • Should-cost at your exact volume in 12 currencies, with the material, processing, tooling and overhead breakdown
  • Who to source from, typical MOQ and lead time, and the exact RFQ checklist to send
  • A quote checker that tells you if a supplier quote is fair, and the red flags to watch
  • The full DFM list and a ready-to-send RFQ draft

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See also: How Stamping (Progressive Die) works and the full route for a hinge leaf in the finder.

FAQ

Frequently asked questions

How is a hinge leaf made?
A hinge leaf is primarily made by stamping (progressive die). The route is: Material; Blanking; Stamping (Progressive Die); Secondary features; Joining; Finish; Inspection.
What does a hinge leaf cost?
It depends on size, tolerance and volume. As a rough ballpark it starts around $0.31 to 0.66 per part at 1,000 off and falls with quantity. The dossier gives should-cost at your exact volume and currency. A model estimate, not a quote.
What material is a hinge leaf made from?
Common choices are Mild/HSLA steel; Spring steel/temper; Brass/phosphor bronze.
What is the main process for a hinge leaf?
Stamping (Progressive Die). Very high-volume sheet parts: contacts, clips, brackets, washers and body panels.
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