Identification of Aircraft Tubing by Rockwell Test
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON DC
Pagination or Media Count:
Seamless steel tubing is to-day the principal material of construction for aircraft. The commercial grade of tubing containing about 0.10 to 0.20 carbon at first used is being superseded by two grades which are approved by the army and navy, and which are also becoming standard for commercial airplanes.
- Laminates and Composite Materials