rocker suspension pin material question

[mbrooks]

i need to get a pin made for a rocker arm type suspension and have a material question or looking for recommendations.

it will be 1" dia. little less then 5" long have 5/8" fine thread tapped into each end to a depth of 1" at the least.

the designer of the car recommends 17-4 stainless h900. i took this recommendation to a machine shop and they kind of balked and recommended 1045 since they make a lot of pins out of this for different applications. the stuff really needs to be stainless for the corrosion resistence.

is there a stainless that would be similiar to the 17-4 that would be easier to machine or should i stick with this stuff. the shop said the price of the 1045 would be about $30 each for labor, the 17-4 would be closer to $60 ea. labor.

the bearings that ride on the pins are composite ptfe, the pins are captured in metal brackets.

[af2]

I would go with the 17-4 stainless at around 100,000 yield.
1045 steel is around 35,000 yield.

[mbrooks]

I would go with the 17-4 stainless at around 100,000 yield.
1045 steel is around 35,000 yield.

mcmaster carr lists two 17-4's. one annealed and the other h900. would one be preferred over the other.

[af2]

So you can machine it and still have 140,000 yeild, go with the H1150. It cuts pretty good.

[mbrooks]

thank you sir, that's what i'll use.