Unfortunately sheet metal bending is not always going to be the same in every shop.
Minimum bend radius plastic sheet.
This radius is applied in all cold bending procedures.
Cold bending tuffak gp polycarbonate sheets may be cold bent with the minimum radius based upon the sheet thickness.
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.
Line bending or thermoforming a brasion resistant acrylic sheet is not recommended.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
Never heat acrylic sheet in a kitchen oven.
Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness.
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.
As a guideline the material can be radiused to 100 times the thickness.
It is given by multiplying the thickness of the sheet by 100 i e.
But for harder materials e g.
Cold forming is possible.
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.
For this reason strip heat bending is recommended on all gauges 118.
To calculate the minimum bend radius of curvature multiply the thickness of the sheet to be used by 330.
Bend radii minimum bend sizes.
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 cold forming radius sheet thickness x 100.
The leg lengths are the part of the flange which is outside of the bend radius.
This gives the minimum radius that should be attained if the final form is to remain in place.
Generally this height is not suitable for selecting a higher size.
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.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
