Hello everyone

During making my last blade, i was wondering if there is a formula or something with which I can calculate the needed width of a tang..... The blade I'm working on, has a width a the base on 4cm/ 1,569inch, and the tang has a width of 2cm/0,79 inch between the shoulders and tapers to 8mm/0,31 inches to the end. The blade has a length of 80cm/31,5 inch (without tang).
I've been going with tangs of this width quite a time /they are around 5.5mm/0,22 inches thick) and never heard about problems with the from the peoples/customers who use/abuse my blades. In spite of this, i have a strange feeling with the tang width during this project....What do you think, do I have to make it wider, or won't there be any problems?

Best regards
Martin

Martin,
I do not want to sound like an oracle, here.
There are many people here who know much more than me, but there are many variables that determine if your width is good or not.
Material, geometry, heat treatment, these things can make a difference.

sorry I didn't tell you.....
The Steel is a CK60. i'ts for a sharp XVIIc blade, and the hardness will be 58HRC. The blade will be made sharp.

I don't thought to the geometry of the blade.
I thought about the geometry of the tang, no edges, but radii of curvature. Your blade is very hard, does not mean that it is good for this material
Your heat treatment is martensitic.
Use your blade should be fine, abuse is not the same thing.
Increases as much as possible the tang, consistent with the size of the grip.
Or change material.
A austempering increases the resistance. (sometimes 30%)
I hope that this is helpfull.