I am trying to identify a steel grade via it's chemistry. It is used in the manufacture of chain used in the food processing conveyor. It's chemistry consists of .03% Aluminum .27% Carbon .34% Chromium .03% Copper .99% Manganese .02% Nickel .07% Silicon .02% Titanium. This chemistry is very similar to SAE 1525 grade steel except for the .34% Chromium which is more than trace quantities. The chain product is heat treated after forming and welding and must exhibit fairly high strength, good wear ability, good impact resistance, and good fatigue resistance. The above chemical recipe through hardened to approx. 45-50 Rockwell "C" has proven to meet all of the requirements but I cannot identify the steel grade. If anyone knows of a grade that fits the above chemistry, please post it as I am about to the point of pulling my hair out:(
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