4340 - Alloy Round Bar Air Melt

4340 - Alloy Round Bar Air Melt

All material was produced using the AIR MELT process and meets the following specifications:


  • AMS6415
  • BMS7-28

"CFNT" stands for Cold Finished, Turned, and Normalized

"RTNT" stands for Rough Turned and Normalized

View the "Alloy Steel Guide" for grades, shapes & various properties.

Refer to our "Guide to Carbon" for grades, shapes and various properties.

Please note that any measurements in metric units are not guaranteed to be exact. The dimensions are provided in metric units for your convenience only. Click here for more information on our metric size policy.