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Impact Test

Impact Test

Impact Test

(OP)
I'm designing a vessel with different thickness(from 24mm to 80mm). The vessel material is SA 516 Gr.70.
The Client's request is that the impact test shall be made at -45°C, for all thickness.
I read the code (SA 20 - Paragraph 12.1.5) and i verified that the test shall be conducted at a temperature no higher than is given in table A2.15.
For example, now I take thickness 80mm into consideration.

The temperature test is -29°C (as per table A2.15) and the Energy Absorption is 20 Joule.

Therefore if the temperature test is -45°C, how much is the Energy Absorption?

RE: Impact Test

Since you are referencing SA-20 I will assume that you are using ASME VIII-1 for the construction code.  Within Section VIII-1 paragraph UG-84 gives more of the details with respect to impact testing.  The remainder are given in UCS-66, 67, and 68 (with reference to Carbon Steel).  Figure UG-84.1 gives what the absorbed energy should be for the tests.  It should be noted that these tests would show compliance with the vessel code but may or may not show compliance with the material specification, SA-20.  

Regards,
EJL

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