The trend is obvious.
Bending aluminum sheet grain.
For 0 5 in thick 7050 aluminum the minimum bend radius may be specified as much as 9 5 times material thickness.
In other words if you re bending 1 8 sheet use a tool with a 1 8 radius to form the inside of the bend.
The grain direction is established during the metal rolling process.
Bending the sheet metal longitudinally with the grain allows those grains to separate at the grain boundaries.
General advice on aluminum.
Bend angles also can be less consistent.
You must pay careful attention to grain or rolling direction when bending high strength metals especially when trying to achieve a small inside bend radius.
This is important to note especially with aerospace and aviation applications since bending with the grain or parallel to the grain direction can result in material failure.
A common way to prevent material failure or cracking is by bending the metal against the grain or perpendicular to the grain.
When bending high strength materials such as spring or high carbon steel you should orient the part so that it can be bent against the grain.
This could be either problematic or catastrophic depending on the application of the end product.
The bend is along the long dimension.
Bending with the grain may result in cracking or.
Inside bend radius 0 19.
Bending with the grain gives a different result than bending against it.
When bending aluminum know that the smaller your inside bend radius the larger the chance that cracking will occur in the part.
Pieces 22 long by 1 75 wide by 0 63 thick.
The harder and thicker the plate is the greater the minimum bend radius.
Again the minimum inside bend radius is even larger when bending with the grain.
For most applications with stainless steel or aluminum you can get away with a zero radius bend on anything under 0 050 thick.
Bending with the grain also limits how tight of an inside bend radius you can achieve without cracking the outside of the bend.
Bending 2024 t3 grain direction considered.
