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Incoloy® Alloy 800H/800HT/800AT

Common Trade Names: Incoloy 800H/800HT/800AT, Alloy 800H/800HT/800AT, Ferrochronin 800H/800HT/800AT, Nickelvac 800H/800HT/800AT, Nicrofer 3220.


INCOLOY® alloy 800H/800HT/800AT is designated as UNS N08810, UNS N08811 and Werkstoff Number 1.4876, 1.4958, 1.4959. It is listed in NACE MR0175 for oil and gas service. 

Nickel-iron-chromium alloys having the same basic composition as INCOLOY® alloy 800 but with significantly higher creep-rupture strength. The higher strength results from close control of the carbon, aluminum, and titanium contents in conjunction with a high-temperature anneal. Used in chemical and petrochemical processing, in power plants for super-heater and reheater tubing, in industrial furnaces, and for heattreating equipment.

Available Product Forms: 
Pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire
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Specifications

INCOLOY® alloy 800H/800HT/800AT is designated as UNS N08810, UNS N08811 and Werkstoff Number 1.4876, 1.4958, 1.4959. It is listed in NACE MR0175 for oil and gas service. 

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), AMS 5766 (Rod & Bar), ISO 9723 (Rod & Bar), ISO 9724 (Wire), ISO 9725 (Forgings), BS 3076NA15 (Rod & Bar), BS 3075NA15 (Wire), VdTÜV 412 (All Products).

Plate, Sheet, and Strip: ASTM A 240, ASTM A 480, ASME SA 240, ASME SA 480 (Plate, Sheet, and Strip), ASTM B 409, ASTM B 906, ASME SB 409, ASME SB 906 (Plate, Sheet, and Strip), ASME Code Case 1325 (All Product Forms), ASME Code Case 2339 (Plate), AMS 5871 (Plate, Sheet, and Strip), BS 3072NA15 (Plate & Sheet), BS 3073NA15 (Strip), VdTÜV 412 (All Products), ISO 6208 (plate, sheet and strip).

Pipe and Tubes: ASTM B 163 & ASME SB 163 (Seamless Condenser & Heat Exchanger Tubes), ASTM B 407, ASTM B 829, ASME SB 407, ASME SB 829 (Seamless Pipe & Tubes), ASTM B 514, ASTM B 775, ASME SB 514, ASME SB 775 (Welded Pipe), ASTM B 515, ASTM B 751, ASME SB 515, ASME 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), BS 3074NA15 (Seamless Pipe & Tubes), VdTÜV 412 (All Products), ISO 6207 (Seamless Tubing).

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

Trademark Notice: Some names are trade names and/or trademarks of specific manufacturers. American Special Metals, Corp. is not affiliated with any manufacturer(s). Orders will be filled to meet specifications from any available source(s). Names are listed solely for reference to help identify products consistent with listed specifications.

Incoloy® Alloy 800H/800HT  is a Registered Trademarks of Special Metals Corporation and Its subsidiaries.

Chemical Composition

UNS Designation

N08800

N08810

N08811

Incoloy Alloys

800

800H

800HT

Nickel

30.0 - 35.0

30.0 - 35.0

30.0 - 35.0

Chromium

19.0 - 23.0

19.0 - 23.0

19.0 - 23.0

Iron

39.5 min.

39.5 min

39.5 min.

Carbon

0.10 max

0.05 - 0.10

0.06 - 0.10

Aluminum

0.15 - 0.60

0.15 - 0.60

0.25 - 0.60

Titanium

0.15 - 0.60

0.15 - 0.60

0.25 - 0.60

Aluminum +

Titanium

0.30 - 1.20

0.30 - 1.20

0.85 - 1.20

ASTM Grain Size

Not Specified

5 or Coarser

5 or Coaser

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