52100 is a high carbon, chromium containing low alloy steel that is through hardening and noted in particular for use as bearings in rotating machinery.
| Specification | Description |
|---|---|
| AMS 6440 | Steel Bars and Forgings. Steel Bearing Applications |
| AMS 6442 | Steel Bars and Forgings. Bearing Applications |
| AMS 6444 | Steel Bars and Forgings. Aircraft Quality. Vacuum Arc Re-Melted |
| AMS 6447 | Steel Bars and Forgings. |
| MIL-S-7420 | Steel Bars. Aircraft Quality |