Metal Sheet Bending Radius

Generally we recommend the largest possible bending radius to avoid cracking on the outer surface.

Metal sheet bending radius.

When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. Advantages of bottoming include greater accuracy and less springback. Bend the minimum bend radius data shown in these charts is measured to the inside of the bend.

The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. The material thickness will be measured in decimal form not by the gauge number. Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material. Large radius bending also known as r bending and profound radius bending is the process of creating a bend with a large radius to material thickness ratio.

In acute air bending the radius it s determined entirely by the v opening of the die. Recommended inside bend radius for sheet metal parts should be equal to material thickness. Hansen steel is an expert in metal forming tube bending cutting and fabrication for various markets throughout california. The bending radius must be at least 0 8 t to 2 t for sheet steel.

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. But for harder materials e g. The machinery is highly accurate when it comes to positioning and repetition and has a wide array of capabilities including hemming and seaming. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Bend radii minimum bend sizes. Bend radii and minimum bends are limited to certain values or ranges which are determined by the equipment and tooling combinations available to the manufacturer. Fractory s metal bending services allow a maximum bending edge length of 7200 mm and a pressing force up to 1000 tons.

Using protective gloves hold the free end of the metal sheet with one hand and with the other hand use a mallet or hammer to begin bending the sheet down and around the curved radius of the wood form. The minimum bending radius depends on the plasticity and thickness of the material. We provide a range of metal processing services including tube and steel bending for los angeles california and surrounding areas. Use this document to choose values that are both manufacturable and meet your needs.

Larger bend radii require about the same force for bottoming as they do for air bending however smaller radii require greater force up to five times as much than air bending.