Anyone know of a good substitue for SAE 1117 steel? Have a print from the 60s that calls for it. Automotive transmission part.
"We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........
1018 is virtually identical, 0.4% less manganese.
The manganese helps the material case harden, not sure why, but that process adds carbon to the surface leaving a tough core. If no case hardening no difference.
If the part is being heat treated you need to let them know what it is so they know what to do.
Why would you need a substitute anyhow? The 1117 machines really nice and I don't have any problems getting it. In my area, it's Peterson Steel of Worcester MA who stocks a lot of it.