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The part was cross sectioned from a forging and sent to a metallurgy firm for analysis. The part is a drive pinion from a recreational vehicle. The vehicle is built in the US but it is a possibility that the component was made in Japan.

I have a chemical analysis and have searched several sources including matweb but I don't know any max or min values and it gives a very broad result of 1700 possibilities, no help. I would like to cross this to a UNS or AISI number if possible. Is there a better calculator or can someone help...

We have tried a larger bearing which provides a couple more contact rollers but it is not a significant improvement with regard to the load carried by each. Yes the subsurface shear stress is close to the maximum and taking into consideration the case may not be uniform after finishing (part...

I tried 9310 AMS6260 not 6265, I see there is a considerable price difference, over $7 a pound. This is why I was thinking about A2 as it is about half as expensive and relatively cheap to heat-treat compared to the pricing for >40 case. It is not totally out of range however, just looking...

Have issues with 8620 deep case carburized pins, spalling by bearing rollers and have tried 9310 with better results because of the higher core hardness but 9310 barely meets the hardness spec of 60/62 Rc (after finish grinding). Thinking about a tool steel with high toughness like A2 which...