What are the Charpy V-notch impact requirements for steel A516 Gr 70

The Charpy V-notch impact requirements for steel A516 Gr 70, which is a carbon steel plate used in pressure vessel applications, typically follow specific guidelines. The standard impact test measures the material's resistance to brittle fracture under impact loading conditions.

For steel A516 Gr 70, the typical Charpy V-notch impact requirements are:
- Minimum average impact energy: 27 Joules (20 ft-lb) at a temperature of -20℃ (-4°F).

These requirements ensure that the steel possesses sufficient toughness and can withstand sudden shock or impact during service. The impact energy represents the energy absorbed by the specimen before fracture during the impact test.

It's important to note that specific impact test requirements may vary depending on different standards, specifications, or customer requirements. Therefore, it is recommended to refer to the applicable standards such as ASTM A516/A516M or the specific project specifications to obtain precise Charpy V-notch impact requirements for steel A516 Gr 70.