Would quench cracks affect only a small portion of the lot?
I checked on the PM options, and at our present volume it is a non-starter, way too expensive. Too much further processing is required.
Wire (like 440A) is commonly available in standard grades, at ~$.03/ft. This would get me to...
Thanks swall. I suspect that this is exactly the defect.
This is the second lot where this has been observed, and the first lot was much more pronounced. We were careful to use a completely different batch of material, expecting not to see this again.
I must confess, that I did not believe...
I am (swiss screw) machining some .0469 pins out of 1/8" 440C bar stock, then hardening to 58RC. I have found porosity in the last 2 lots of Carpenter material. Is this a common problem with 440C?
I am considering switching to 440A drawn to size (.0469)to eliminate this defect. The yield...
