Original
By certification 
INCOLOY Alloy 800, Alloy 800H, Alloy 800HT Plate
INCOLOY alloy 800 (UNS N08800/W. Nr. 1.4876) is a widely used material for construction of equipment requiring corrosion resistance, heat resistance, strength, and stability for service up to 1500°F (816°C). Alloy 800 offers general corrosion resistance to many aqueous media and, by virtue of its content of nickel, resists stress corrosion cracking. At elevated temperatures it offers resistance to oxidation, carburization, and sulfidation along with rupture and creep strength. For applications requiring greater resistance to stress rupture and creep, especially at temperatures above 1500°F (816°C), INCOLOY alloys 800H and 800HT are used. The chromium in the alloy imparts both aqueous and heat resistance. Iron provides resistance to internal oxidation. The nickel content maintains a ductile, austenitic structure. Thus, alloy 800 is readily formed, welded, and machined.
It had been known for some time that higher carbon alloy 800 had higher creep and rupture properties than low-carbon material. For that reason, Special Metals had melted to a carbon range of 0.05 to 0.10% except for special orders where customers specified a lower carbon content. The carbon range of 0.05 to 0.10% is within the ASTM and ASME specification limits for alloy 800 and is in the upper portion of that range. Special Metals generated data for this material and presented them to the ASME Code. The Code approved higher design stresses for Section I and Divisions 1 and 2 of Section VIII, which appeared in Code Case 1325- 7. Note that alloy 800H required not only a carbon range of 0.05 to 0.10% but also an average grain size of ASTM 5, or coarser.
We knew the importance of maintaining the aluminum and titanium contents in the upper portion of the specified material range. This resulted in higher creep and stress rupture properties than competitive alloy 800H. Therefore, to maintain higher allowable design stresses, the company introduced a variation of INCOLOY alloy 800H which is called INCOLOY alloy 800HT (UNS N08811). INCOLOY alloy 800HT has a restricted chemistry, within the limits of alloy 800H, and requires a heat treatment of 2100°F (1149°C) minimum. The carbon is 0.06 to 0.10% (alloy 800H is 0.05 to 0.10%), the Al + Ti is 0.85 to 1.20% (alloy 800H is 0.30 to 1.20% Al + Ti)
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Specification |
ASTM A240/A 480 & ASME SA 240/SA 480 (Plate, Sheet, and Strip), ASTM B 409/B906 & ASME SB 409/SB 906 (Plate, Sheet, and Strip), ASME Code Case1325 (All Product Forms), ASME Code Case 2339 (Plate), SAE/AMS 5871(Plate, Sheet, and Strip), BS 3072NA15 (Plate & Sheet), BS 3073NA15 (Strip), VdTÃœV 412 (All Products), ISO 6208 (plate, sheet and strip) |
STANDARD |
ASME, ASTM, AISI, AMS, JIS, EN, DIN, GB/T |
Grade |
UNS N08800, 1.4876, alloy 800, incoloy 800, UNS N08810, alloy 800H,UNS N08811, alloy 800HT |
Thickness of Plate |
4.76MM-70MM and width >250mm |
thickness of sheet |
thickness <4.76MM and width >600mm |
Thickness of Strip |
thickness <4.76MM and width <600mm |
Finish for sheet |
No.1 finish-hot roolled, annealed and descaled |
No.2D finish-cold-rolled, dull finish | |
No.2B finish-cold-rolled, bright finish | |
No.3 finish-intermediate polished finish, one or both sides | |
No.4 finish-general purpose polished finish, one or both sides | |
No.6 finish-dull satin finish, tampico brushed, one or both sides | |
No.7 finish-high luster finish | |
No.8 finish-mirror finish | |
Finish for strip |
No.1 finish-cold rolled to specified thick-ness, annealed, and descaled |
No.2 finish-same as No.1 finish, followed by a final light cold-roll pass, general on highly polished rolls | |
Bright annealed finish-a bright cold-rolled finish retained by final annealing in a controlled atmosphere furnace | |
polished finish-strip is also available in polished finishes such as No.3 and No.4 | |
Finsh for plate |
Hot-rolled or cold rolled, and annealed or heat treated, and blast cleaned or pickled |
hot rolled or cold rolled, annealed or heat treated, blast cleaned and /or ground | |
hot rolled or cold rolled, annealed or heat treated, blast cleaned and /or ground, and pickled | |
Edges for coled rolled strip |
No.1 edge-a rolled edge, either round or square as specified. |
No.3 edge-an edge produced by slitting | |
No.5 edge-an approximately square edge produced by rolling or filing after slitting | |
Delivery condition |
Annealed, hot rolled, cold rolled, pickled, hard |
Product type |
Plate, sheet, coil, strip, foil, ribbon, wire |
Origin of raw materials |
CHINA, USA, EUROPE, JAPAN |
Brand we mainly distributed |
BAO STEEL, He-cheng nickle |
Value added services available |
Cut-to-length |
Laser cutting | |
Third party wittness and test arrangement | |
Edge preparation | |
Color coding | |
Package |
· Wooden Boxes |
· Wooden pallets | |
· Steel Strips Bundled | |
· Standard seaworthy export packing | |
· as required |
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