Thick grade 350 and 400 may have a minimum bend radius of 2 5 times the material thickness when transverse bending while longitudinal bending may require a minimum bend radius that s 3 75 times the material thickness.
Minimum bend radius plastic sheet.
Line bending or thermoforming a brasion resistant acrylic sheet is not recommended.
Minimum cold forming radius sheet thickness x 100.
This gives the minimum radius that should be attained if the final form is to remain in place.
The leg lengths are the part of the flange which is outside of the bend radius.
But for harder materials e g.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness.
The recommended radius of curvature should be a value greater than 180 times the thickness of the sheet for plexiglas g sheet and 300 times the thickness for plexiglas mc sheet see table below.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
Use this document to choose values that are both manufacturable and meet your needs.
Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal.
Cold forming plexiglas sheet can be cold formed bent at room temperature in a smooth arc and held to a radius by forcing the material into a curved channel support.
This radius is applied in all cold bending procedures.
Unfortunately sheet metal bending is not always going to be the same in every shop.
Never heat acrylic sheet in a kitchen oven.
Cold forming is possible.
In steel between 0 5 and 0 8 in.
Again the minimum inside bend radius is even larger when bending with the grain.
Tighter radii may result in crazing or cracking of the coating.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
Generally this height is not suitable for selecting a higher size.
For this reason strip heat bending is recommended on all gauges 118.
As a guideline the material can be radiused to 100 times the thickness.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
The minimum bend edge dimension l in the figure is the minimum bend edge dimension of one bend edge plus t t is the material thickness and the height h should be selected from commonly used plates such as 0 5 0 8 1 0 1 2 1 5 2 0.
It is given by multiplying the thickness of the sheet by 100 i e.
The bend allowance is defined as the material you will add to the actual leg lengths of the part in order to develop a flat pattern.
