Carbon-steel problem

[kender]

I don't think this was asked before:

I have ruined many many many of my blades due to small cracks on them. Actually I do not know if they are cracks... some scratches, lines along the blade that can not be removed using grit papers. They appear as soon as I remove the dye from the blades, so I'm sure they are manufacturing defects.

Does anyone have a similiar problem? Will these scratches decrease the strength and durability of the picks? Will tempering remove these scratches?

Please help me, I can't find any carbon-steel blades that do not have these scratches! (only high speed steel or bi-metal blades do not have them)

[mckutzy]

ah yes. i happin to knowlageable in the metalurigical arts.....ur talking about hacksaw blades im guessing. if so most hacksaw baldes are hard and the edges are tempered. these cracks ar caused when a stress occured. if u were to heat gently and i mean gently. the area where u are working u should anneal some hardness.