Hello, we planning on gas nitrocarburizing some short sections of thin walled (< 0.020”) 4340 tubing. The question has come up that since we are going to get basically through penetration with the nitrocarburizing, what is that going to do to the impact strength of the tubing? My guess it that...
Could anyone suggest an alternative topcoat for a mechanical tin / zink plating? Most of the suppliers I have contacted about trivalent chromate have said they aren't recommending them for tin / zinc mixtures.
Hello,
I have received a bit of conflicting advice about a chromate conversion coating applied over mechanically plated parts. One source says there is hydrogen embrittlement risk, the other say there is no concern. I would be interested in any additional opinions or information.
Thanks!
Forgive the amateurish question, but could someone tell me why automotive suspension springs are generally silicon steels?
It seems to me that higher tensile steels would increase fatigue life.
My only guess was that heat build up in the spring required a more heat tolerant material? I would...
Hello,
I am hoping to get some suggestions for a consolidated reference on dimensional changes (volume changes) in various metals / alloys as a result of heat treating. Preferably I am looking for one that gives curves or at least data points contrasted with hardness.
Any suggestions or...
I have a question about stainless steel and galvanic corrosion.
Most galvanic series lists show two different values for stainless steel. One for the active metal and one for the metal after it has been passivated.
I understand that passivation will increase galvanic compatibility with more...
I am hunting around for information on the impact of ferritic nitrocarburizing on galvanic corrosion. Does this process tend to move the anodic index up or down in steels? Or is it generally considered nominal in impact? I am looking at this from a fastener perspective. Any insight or pointers...
Hey folks,
We are dealing with a cylinder (rod) with a few full-depth holes drilled cross-wise.
I am wondering if anyone has a rule of thumb for chamfer / fillet sizes for the edges of drilled holes.
Basically, I am trying to figure out if there is a easy way to rough guess at the optimal...
