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F51/2205 1

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zulsaid

Materials
Joined
Jul 16, 2008
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MY
According to ASTM standard, grade F51/2205 charpy test is tested at -46 degree celcius, but why my customer request at -50 degree celcius? Any difference between these two temperature?
 
Well, -46 deg C is a nice round number in deg F: -50...
 
zulsaid,
The standard impact testing of that material is listed at -50F / -46C. The material may operate at lower temperature than -46C, provided that it is tested for that temperature and a minimum impact test value of x Joules, corrected for the new impact test temperature, is achieved. This method is allowed in several international pressure vessel codes (eg. AS 1210 in Australia).
cheers,
gr2vessels
 
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