Product Detail
Incoloy 800H/HT
Brand: A-one Alloy
Original: 0.00

Incoloy* 800H/HT (UNSN08810/N08811)


INCOLOY 800H and 800HT have  significantly higher creep and rupture strength than INCOLOY 800. The three  alloys have nearly identical chemical composition limits. The base elements  in all three alloys are the same. However, chemical composition limits vary with  carbon, aluminum and titanium. The carbon content of INCOLOY 800 (UNS N08800)  is 0.10% max with no limit on the lower end. The carbon content for INCOLOY 800H  (UNS N08810) is 0.05 to 0.10%, which is the upper end of the 0.10% maximum  specified for INCOLOY 800. The chemical limits for INCOLOY alloy 800HT (UNS  N08811) are even more restrictive yet still within the limits specified for INCOLOY  alloy 800H. The carbon content for INCOLOY alloy 800HT is further restricted  to 0.06 – 0.10%. Additionally, the Al plus Ti content of INCOLOY alloy 800HT  is restricted to 0.85 – 1.20%. Note that the chemical compositions for  INCOLOY alloy 800HT will always be within the limits of INCOLOY alloy 800H. Note  also that the limits for INCOLOY alloy 800H may or may not be within the  limits of INCOLOY 800HT


High temperature strength

High creep rupture strength

Resistant to oxidation and  carburization in high temperature environments

Good corrosion resistance in many  acidic environments

Good resistance to many  sulfur-containing atmospheres


Ethylene furnace quench boilers

Hydrocarbon cracking

Valves, fittings and other components  exposed to corrosive attack from 1100-1800° F

Industrial furnaces

Heat-treating equipment

Chemical and petrochemical processing

Super-heater and re-heaters in power  plants

Pressure vessels

Heat exchangers

Equal grades


Chemical composition


Rod, Bar, Wire,  Forgings, and Forging Stock - ASTM B 408 & ASME SB 408 (Rod & Bar), ASTM B  564 & ASME SB 564 (Forgings), ASME Code Case 1325 (All Product Forms),  ASME Code Case 1949 (Forgings), SAE/AMS 5766 (Rod & Bar)

Plate, Sheet, and  Strip - ASTM A 240/A  480 & ASME SA 240/SA 480 (Plate, Sheet, and Strip), ASTM B 409/B 906  & ASME SB 409/SB 906 (Plate, Sheet, and Strip), ASME Code Case 1325 (All  Product Forms), ASME Code Case 2339 (Plate), SAE/AMS 5871 (Plate, Sheet, and  Strip)

Pipe and Tubes - ASTM B 163 & ASME SB 163  (Seamless Condenser & Heat Exchanger Tubes), ASTM B 407/B 829 & ASME  SB 407/SB 829 (Seamless Pipe & Tubes), ASTM B 514/B 775 & ASME SB  514/SB 775 (Welded Pipe), ASTM B 515/B 751 & ASME SB 515/SB 751(Welded  Tubes), ASME Code Case 1325 (All Product Forms), ASME N-20 (Cold Worked Seamless  Condenser and Heat Exchanger Tubes for Nuclear Service)

Other Product  Forms - ASTM B 366 &  ASME SB 366 (Fittings)

Forms of products  available

Bar, rod, sheet, plate, pipe, tube,  pipe fitting, flange, fastener, powder

Stock & Delivery

Plenty of sheet/plate in stock with  US/EU/Japan origin. Huge stock of bars. Customized size will be delivered  within 2 weeks. For other products kindly confirm with A-one Alloy.

INCONEL, INCOLOY, MONEL, INCO-WELD, INCOFLUXand 800HT are trademarks of the Special Metals Corporation group of companies.