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ASTM B 425(UNS No. N8825)forging and ASTM B 564(UNS No. N8825) 1

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pipexp

pipexp

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I have found a specification requirement of ASTM B 425(UNS No. N 8825)forging for fittings and flanges but I have observed that this ASTM specification is for rod and bar not for forging whereas the ASTM B 564(UNS No. N 8825)is for forging.

Now I am informed that if any specification calls for ASTM B 425 ( UNS No. N 8825) and forging than both can not be complied it has to be either only ASTM B 425 ( UNS No. N 8825) or ASTM B 564(UNS N 8825.)and forging.

Can any body clarify about this? I am in extreem hurry to take decision regarding this for Incoloy piping fitting and flanges. Please help me out.
 
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For pipe flanges and flanged fittings refer to ASME B16.5. In ASME B16.5, both ASTM B 424 and B 564 standard specifications are approved for use - B 424 is for plates and B 564 is for forgings. Either standard specification will work for Incoloy 825 material.
 
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Thanks metengr, but whether ASTM B 425 can be forging ? if I say forging for Icoloy 825 piping fitting can it be other than ASTM B 564 ? Please clarify.
 
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nirmalii;
No. ASTM B425 is a standard specification for hot finished and cold drawn rod and bar products. You need to reference B424.
 
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metengr thanks once again. Since ASTM B 424 is specification for plates if I want to have forged flange I have no other option than ASTM B 564. Am I correct.
 
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Yes, this is correct. ASTM B424 deals with plate, strip and sheet that are either hot or cold rolled.
 
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