Our bending specifications — including bend radius, K factor, flange length, bend angle limits, and more — are listed in our Material Catalog and Bending Calculator. Use them exactly as provided to ensure your parts form within tolerance.
We’ve dialed in our bending specs for every material and thickness we bend. These specs are fixed and can’t be altered — so set your design to match them for a perfect fit.
What’s included in our bending specs:
- Min/max overall flat size before bending
- Max bend length
- Min flange length
- Max bend angle + angle tolerance
- Die width used
- Bend radius
- K factor
- Bend deduction
- Min bend relief depth
- Joggle bend limits (min bend line spacing, max flange length)
See our Bending Guidelines for rules that apply to all materials.
Where to find them:
1. Material Catalog
- Filter by “Bending” in Available Services
- Pick your material → click Specifications → choose thickness → click View Specs for Bending
- Switch inch/mm as needed
- Click View Specs for Bending
2. Bending Calculator
- Select material thickness, optionally change bend angle
- Scroll to “Advanced Details” for Bend Allowance/Deduction, K factor, and more
- Or scroll further for the full bending spec table
Learn how the math of our bending calculator works in this detailed tutorial!
3. Free CAD gauge tables and sheet metal rules
- Import our specs directly into Fusion 360 Sheet Metal Rules or SolidWorks Gauge Tables
- These set bend radius, K factor, and bend relief automatically, but still check min flange length and part size
Please note: when used as directed, our gauge tables and sheet metal rules will automatically apply the correct bend radius, K factor, and bend relief specifications to designs, but they will not enforce minimum flange length or overall flat part size requirements.
Check all material bending specifications for your chosen material thickness in our Catalog to ensure your part meets all guidelines!
Pro tip:
- 2D CAD: Use the Bending Calculator to nail your flat pattern before you cut
- 3D CAD: Apply our sheet metal rules or gauge tables so the formed part matches your design
Bottom line:
Follow our bending specs exactly, and your parts will form within tolerance every time.