With the rapid development of the global economy, the trend of large-scale and high-parameterization of pressure vessels has become increasingly obvious, the demand has increased significantly, and the operating conditions and environment have become more and more severe. The steel plate A516 GR70 for medium and low temperature pressure vessels is widely used in the pressure vessel industry at home and abroad.
Technical requirements and characteristics of A516 GR70 steel plate A516 GR70 steel plate adopts ASTM A516 "Carbon Steel Plate for Medium and Low Temperature Pressure Vessels" and the user's personalized technical requirements, and has the following characteristics:
1. The carbon content in the chemical composition of A516 GR70 steel plate varies according to different specifications, and the manganese content is lower.
2. Only one value is specified regardless of thickness specifications and quality grades.
3. The elongation of A516 GR70 steel plate adopts a fixed sample gauge length of 200mm;
4. For the impact toughness of A516 GR70 steel plate, users require 0C longitudinal V-shaped impact energy>41J, and transverse impact energy>27J;
5. Ultrasonic inspection using ATMA435/A435M-90 standard;
6. The user requires A516 GR70 steel plate to be used as a sample to simulate the post-weld heat treatment test (SR) area, and its performance after heat treatment should meet the requirements.
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