# Design rules Steel

Quelle: <https://mvg-frankfurt.de/en/design-rules/steel>

> Steel (S235JR, DC01, galvanised steel): minimum flange, inside radius, distance from hole to bend edge and maximum bend length per sheet thickness; smallest…

For S235JR, DC01, galvanised steel. Laser cutting up to 20 mm, bending up to 6 mm sheet thickness. The values come from our rule set. The configurator checks your part with the same figures.

## Bending per sheet thickness

*Bending rules Steel per sheet thickness*

| Sheet thickness | Smallest flange (outside) | Inside radius | Hole to bend edge | Longest bend | Longest bend, acute angle | Hem |
|---|---|---|---|---|---|---|
| 0.5 mm | 8 mm | 1 mm | 5 mm | 3,230 mm | 3,230 mm | yes |
| 0.8 mm | 11.7 mm | 1.6 mm | 9.7 mm | 3,230 mm | 3,230 mm | yes |
| 1 mm | 11.7 mm | 2.8 mm | 9.7 mm | 3,230 mm | 3,230 mm | yes |
| 1.5 mm | 11.9 mm | 3.3 mm | 9.7 mm | 3,230 mm | 3,230 mm | yes |
| 2 mm | 9.4 mm | 2 mm | 7.4 mm | 3,230 mm | 3,230 mm | yes |
| 2.5 mm | 12.3 mm | 2.5 mm | 9.7 mm | 2,880 mm | 2,880 mm | no |
| 3 mm | 17.9 mm | 4.9 mm | 14.6 mm | 3,230 mm | 3,230 mm | no |
| 4 mm | 17.9 mm | 4 mm | 14.6 mm | 1,640 mm | 3,230 mm | no |
| 5 mm | 39.1 mm | 8 mm | 35.9 mm | 3,230 mm | 3,230 mm | no |
| 6 mm | 39.1 mm | 9 mm | 35.9 mm | 2,190 mm | on request | no |
| 8 mm | can be ordered as a laser-cut blank |  |  |  |  |  |
| 10 mm | can be ordered as a laser-cut blank |  |  |  |  |  |
| 12 mm | can be ordered as a laser-cut blank |  |  |  |  |  |
| 15 mm | can be ordered as a laser-cut blank |  |  |  |  |  |
| 20 mm | can be ordered as a laser-cut blank |  |  |  |  |  |

## Laser cutting per sheet thickness

*Laser rules Steel per sheet thickness*

| Sheet thickness | Smallest hole | Hole recommended from | Smallest web | Web recommended from | Smallest edge distance | Edge recommended from |
|---|---|---|---|---|---|---|
| 0.5 mm | 1 mm | 1 mm | 0.5 mm | 2 mm | 0.5 mm | 1.5 mm |
| 0.8 mm | 1 mm | 1 mm | 0.5 mm | 2 mm | 0.5 mm | 1.5 mm |
| 1 mm | 1 mm | 1 mm | 0.5 mm | 2 mm | 0.5 mm | 1.5 mm |
| 1.5 mm | 1 mm | 1.5 mm | 0.75 mm | 2 mm | 0.75 mm | 1.5 mm |
| 2 mm | 1 mm | 2 mm | 1 mm | 2 mm | 1 mm | 2 mm |
| 2.5 mm | 1.25 mm | 2.5 mm | 1.25 mm | 2.5 mm | 1.25 mm | 2.5 mm |
| 3 mm | 1.5 mm | 3 mm | 1.5 mm | 3 mm | 1.5 mm | 3 mm |
| 4 mm | 2 mm | 4 mm | 2 mm | 4 mm | 2 mm | 4 mm |
| 5 mm | 2.5 mm | 5 mm | 2.5 mm | 5 mm | 2.5 mm | 5 mm |
| 6 mm | 3 mm | 6 mm | 3 mm | 6 mm | 3 mm | 6 mm |
| 8 mm | 6.4 mm | 8 mm | 4 mm | 8 mm | 4 mm | 8 mm |
| 10 mm | 8 mm | 10 mm | 5 mm | 10 mm | 5 mm | 10 mm |
| 12 mm | 9.6 mm | 12 mm | 6 mm | 12 mm | 6 mm | 12 mm |
| 15 mm | 15 mm | 15 mm | 7.5 mm | 15 mm | 7.5 mm | 15 mm |
| 20 mm | 20 mm | 20 mm | 10 mm | 20 mm | 10 mm | 20 mm |

## How to read the tables

- **Smallest flange:** shortest flange length, measured outside, determined on our press brake per die. From this value the flange rests securely on the tool.
- **Inside radius:** the radius that our press brake produces at this sheet thickness with the standard tool on a right-angled bend, measured per die. With thin sheet it is usually larger than the sheet thickness. Calculate your flat pattern with this radius.
- **Hole to bend edge:** smallest distance from the hole edge to the bend edge. With less distance, the hole distorts during bending.
- **Longest bend:** largest length of a bend edge. With thick sheet the press force limits the length. “Acute angle” means: inside angle below 88°.
- **Hem:** Sheet fully pressed together (hem), possible up to 2 mm sheet thickness.
- **Smallest hole, web, edge distance:** from the smallest value we manufacture your part, from the recommended value without restriction.

The configurator shows which sheet thicknesses we supply in Steel. The tables show the state of our rule set at the last website update; the check when you order is binding. For a borderline case, send a review request.

[Configure a bent part](https://mvg-frankfurt.de/en/configurator/bent-parts) · [Configure cut-to-size](https://mvg-frankfurt.de/en/configurator/cut-to-size) · [Open the part designer](https://mvg-frankfurt.de/en/part-designer)

## More on this topic

- Data sheet [Steel S235JR](https://mvg-frankfurt.de/en/sheet-metal-cutting/stahl/s235jr)
- [Design rules Stainless steel](https://mvg-frankfurt.de/en/design-rules/stainless-steel)
- [Design rules Aluminium](https://mvg-frankfurt.de/en/design-rules/aluminium)
- [Threads and countersinks](https://mvg-frankfurt.de/en/design-rules/threads)
- [Bend radius and flat pattern calculator](https://mvg-frankfurt.de/en/calculators/bend-radius)
- Magazine: [Bend radius and minimum flange](https://mvg-frankfurt.de/en/magazine/bend-radius-and-minimum-flange)
- [Tolerances](https://mvg-frankfurt.de/en/tolerances) and [Quality](https://mvg-frankfurt.de/en/quality)