Shearing / Blanking / Punching: the route, the tolerances it holds, materials and design tips, with an indicative cost. One of 56 processes in the free finder.
Sheet formingFamily
+/-0.2mmTypical tol.
5Route steps
35Parts in finder
Shearing and blanking cut flat stock with a punch and die, slicing sheet metal to a profile in one stroke.
At a glance
When to use it, and when not
Best for
Flat blanks and simple sheet parts in high volume.
Watch for
Edges have a burr and a rollover; tolerances are modest without secondary work.
Step by step
The typical route
Raw material to finished part. Steps vary with material, volume and tolerance; this is the free route from the finder.
Nest
Nest parts on the sheet for best yield.
Tooling CAM Tolerance - Lead -
Cut
Laser-cut (low vol) or blank on a die (high vol).
Tooling Laser/die Tolerance - Lead -
Deburr
Deburr edges and holes.
Tooling - Tolerance - Lead -
Secondary
Countersink/tap if called for.
Tooling - Tolerance - Lead -
Inspect
Check flat pattern and edge quality.
Tooling - Tolerance - Lead -
Precision
Tolerances it can hold
TYPICAL TOLERANCE IT CAN HOLD
Where this process typically lands. Tighter is possible with extra operations like grinding, at higher cost.
Materials
Materials it suits
Grade
Why it suits this
Mild steel CR/HR
Cheap, formable
Stainless 304
Corrosion, finish
Aluminium 5052
Light, corrosion
Design
Design tips
A few general pointers for Shearing / Blanking / Punching. The full, part-specific DFM list is in the dossier.
Holes too close to the edge.Keep >=1x thickness from edge.
Tight nesting-unfriendly shape.Simplify outline.
Cost
What it costs
Flat blanks; laser for low volume, blanking die for high. Priced by sheet area and nesting yield.
PER-PART COST vs VOLUME
Per-part cost drops as volume spreads tooling and setup over more parts. The exact figures for your part at your volume, in your currency, are in the dossier.
MODEL EST.
$4.2 to 7.2per part at 1 off
A rough ballpark only. The dossier gives should-cost at your exact volume and currency, with the full breakdown.
GET THE FULL DOSSIER
Everything you need to quote and source it
The free route above is yours. To actually put a number on this process 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
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How is a part made by Shearing / Blanking / Punching?
Shearing and blanking cut flat stock with a punch and die, slicing sheet metal to a profile in one stroke. The typical route is: Nest; Cut; Deburr; Secondary; Inspect. Flat blanks and simple sheet parts in high volume.
What does Shearing / Blanking / Punching cost per part?
It depends on size, tolerance and volume. As a rough ballpark it starts around $4.2 to 7.2 per part at low volume and falls with quantity. The dossier gives should-cost at your exact volume and currency. Model estimates, not quotes.
What tolerance can Shearing / Blanking / Punching hold?
Typically about +/-0.2 mm, tighter with extra finishing operations at higher cost.
What materials suit Shearing / Blanking / Punching?
Common choices are Mild steel CR/HR (Cheap, formable); Stainless 304 (Corrosion, finish); Aluminium 5052 (Light, corrosion).
See the exact route and should-cost for your part
The free finder maps your part to its process and full route. Pro adds should-cost at your volume, sourcing and an RFQ draft.
