Yes, you can accept 22HRC (235BHN) provided if the hardness is done
with 3000kg of load.
200BHN you can also accept if the hardness testing is done with 500kg load.
Hope it has clarified.
Regards,
Zakir Ali.
KILBURN ENGG LTD
From: Hafiz Ali Alvi <alimalvi300@hotmail.com>
Sent: Mon, 14 Nov 2011 11:32:37
To: <materials-welding@googlegroups.com>
Subject: [MW:12957] NACE compliance for sour service
Hello All,
My question is about NACE compliance for sour service. As per ITB documents two different requirements has been mentioned;
1) Pipes, fittings and forgings in sour service shall be only NACE compliant.
2) Hardness of Carbon Steel material shall not exceed 200BHN.
Procurement send inquiry to different vendor for piping items and vendor's respond that they will comply with NACE MR-0175 (Hardness Only). Also as per NACE Max. hardness limit is 237 BHN(22HRC) which is higher than 200BHN.
Now my questions is;
1) What are the minimum requirements for the material to be NACE Complied? (HIC is not required clarified by cleint)
2) Can we accept 22HRC hardness as per NACE MR-0175.
Regards.
Hafiz Ali Alvi
Piping Material Engineer
JGULF
My question is about NACE compliance for sour service. As per ITB documents two different requirements has been mentioned;
1) Pipes, fittings and forgings in sour service shall be only NACE compliant.
2) Hardness of Carbon Steel material shall not exceed 200BHN.
Procurement send inquiry to different vendor for piping items and vendor's respond that they will comply with NACE MR-0175 (Hardness Only). Also as per NACE Max. hardness limit is 237 BHN(22HRC) which is higher than 200BHN.
Now my questions is;
1) What are the minimum requirements for the material to be NACE Complied? (HIC is not required clarified by cleint)
2) Can we accept 22HRC hardness as per NACE MR-0175.
Regards.
Hafiz Ali Alvi
Piping Material Engineer
JGULF
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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