Standard: GB / T 3077-1988
● Features and Scope:
Strength, hardenability, good toughness, when small deformation hardening, high strength and creep rupture strength at high temperatures. Requirements for the manufacture of higher intensity than the 35CrMo steel and tempered forgings larger cross-section, such as the big locomotive traction gears, supercharger drive gear, rear axle, greatly affected by the load rod and spring, can also be used 2000m or less deep oil drill pipe joints and salvage tools. |
