Longest lasting ( time between sharpening ) pruning 12" chain

[JustSomeOldDude]

I apologize if this is a silly question. I know that such a small bar is really not often used, but in my case the weight is a factor. I'd rather use a small saw for cleaning up.
Back to the question..
Which 12" chain lasts longest between sharpenings?
Thanks in advance

 

[Franny K]

The Stihl Picco Duro if you can keep from chipping the cutters, they are carbide.

If you go to the 1/4 pitch Stihl 13rm that lasts amazingly long when new, more cutters per loop.

If you cut stuff that grew significantly higher than ground level most anything lasts well.

 

[sean donato]

A carbide like mentioned will last the longest but sacrifice speed in the cut, it also requires a diamond to sharpen and they are quite costly. This is actually kinda a loaded question as how long a chain stays sharp depends on what your cutting and how clean the wood Is, how many times you ram the chain in the dirt ect.