INCOLOY 800HT 3

[gguerrageci]

i WOULD LIKE TO KNOW THE MAXIMUM OPERATION TEMPERATURE FOR A PIPE OF INCOLOY 800HT

 

[jsummerfield]

Look for ASTM B408, ASME SB-408 or UNS N08800. The Young's modulus and S Stress values are published with suitable numbers to about 1100 degree F in Various ASME B31.1, B31.3, "Physical and Mechanical Properties". The ASME Boiler and Pressure Vessel Code, Section II Materials, Part D - Properties - S values avalance down from 13000 psi at 1100 deg F to 2000 psi at 1300 deg F. Thus, I would avoid N08800 above 1100 degree F.



John

 

[metengr]

See below for specific information on Incoloy 800;

http://www.specialmetals.com/

Suggest Incoloy 800 HT pipe/tube under ASME B 407.

Maximum service temperature depends on the application. For example, Section I (boiler application) the maximum service temperature is 1500 deg F, where Section VIII, Div 1 application is 1650 deg F for unfired pressure vessels.

For B31 Pressure Piping (B31.1 - Power Piping) maximum service temperature is 1200 deg F. For B31.3 (Process Piping), the maximum service temperature is 1650 deg F.

 

[06engrexec06]

Metengr,

The website link you provided has excellent information on it. Do you, or anyone else, know of a website with similar information for ferrous alloys, namely various grades of steel. I have found the following website to be helpful.

http://www.steelforge.com/

Can someone recommend another website? Thank you all!

 

[metengr]

Try here;

http://www.matweb.com/membership/reg-start.asp?ckck=1

 

[gguerrageci]

Do any know the allowable stress for 1500°F to 1650°F for incoloy 800HT

 

[metengr]

Yes, per ASME B&PV Code, Section II, Part D, for UNS
08811, Incoloy 800HT

1500 deg F 2.2 Ksi
1550 deg F 1.6 Ksi
1600 deg F 1.2 Ksi
1650 deg F 0.91 Ksi

 

[gguerrageci]

This allowable stresses aplyy to ASME B31.3 ?

 

[metengr]

No. For B31.3

1500 deg F 1.9 Ksi
1550 1.5
1600 1.2
1650 1.0