Testing of heat resistant steel tubes PQR-ASME IX

[Dinesh K]

Hi,

We are going to do PQR testing of heat-resistant steel tubes. Client has given a reference of QW-466.19 for the bend test, which i could not find in the latest ASME IX. 

Can anyone please help

[sridhar cn]

If your client is referencing QW-466.19 in ASME Section IX for a bend test, it’s likely a misunderstanding or 

misreference, as this clause does not appear in the 2017, 2021, or 2023 editions, nor in earlier editions.

Inform your client that QW-466.19 doesn’t exist in recent ASME Section IX editions on the intended clause or test 

requirements. We can proceed with standard bend test requirements under QW-466.1 (general bend test figures) 

and QW-163 (acceptance criteria).

C Sridhar.

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[Vishwas Keskar]

What is ASME material grade?

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[K Dinesh]

ASTM A297 Gr. HP

Thanks & Regards

K.Dinesh 

Metallurgist

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[sridhar cn]

 ASME uses and approves materials from ASTM and other sources for use in pressure-related applications, 

assigning them a special ASME designation (typically starting with “SA-”). These are called ASME-listed 

materials, but not "ASME grades".

In this sense, ASME does not invent material grades. but approves and lists them for use for the code applications.   

for example,

ASTM A516 → ASME SA-516

ASTM A240 → ASME SA-240.

Hope it is clear.

C Sridhar.

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[sridhar cn]

ASTM A297 Grade HP (Cr 24-28% & Ni 33-37%) is a heat-resistant stainless steel casting alloy commonly used in high-temperature 

applications. ASTM A297 Grade HP (ASME sec II Part A and its UNS number is N08705) does not have a direct, one-to-one equivalent 

in ASME standards and modified slightly for specific applications (example: pressure vessels, piping).

For practical purposes, in ASME codes, Grade HP would be referenced under SA-297 Grade HP for applications like furnace parts, heat 

treatment equipment, or other high-temperature cast components. For a specific purpose like piping, it is referred to as ASME B16.5 -for 

flanges.

C Sridhar.

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