Specifications
Mechanical Properties
| Ultimate Tensile Strength | 70000 |
| Yield Strength | 50000 |
| Brinell Hardness | 120 |
| Rockwell Hardness | B75 |
Technical Specifications
| AMS | 4037 |
| AMS-QQA | 250/4 |
| ASDM | B209 |
Chemistry
| Al | 90.7-94.7 |
| Chromium | .1 max |
| Cu | 3.8-4.9 |
| Fe | .5 max |
| Mg | 1.2-1.8 |
| Mn | .3-.9 |
| Si | .5 max |