INCOLOY 800/800H/800HT Datasheet for Incoloy 800/800H/800HT
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Datasheet for Incoloy 800/800H/800HT UNS N08800, UNS N08810, UNS N08811, W.Nr. 1.4876, W.Nr. 1.4958, W.Nr. 1.4959 What is Incoloy 800/800H/800HT? •
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Incoloy Alloy 800 (UNS N08800 or W.Nr. 1.4876) is an iron-nickel-chromium alloy with good strength and excellent resistance to oxidation and carburization in hightemperature atmospheres. It also has excellent resistance to corrosion by many aqueous environments and resistance to chloride stress-corrosion cracking. Incoloy 800 alloy maintains a stable austenitic structure during prolonged exposure to high temperatures since it doesn’t form the embrittling sigma phase after long time exposure at 1200°F [649°C]. Incoloy Alloy 800H (UNS N08810 or DIN W.Nr. 1.4958) has almost the same chemical composition as Alloy 800 except that it requires a higher carbon addition resulting in improved high-temperature properties. Compared to Incoloy 800, it has better creep and stress-rupture characteristics in the 1100°F (592°C) to 1800°F (980°C) temperature range. While Incoloy 800 is usually annealed at at approximately 1800°F (980°C), Incoloy 800H should be annealed at approximately 2100°F (1150°C). Besides, Alloy 800H has a coarser average grain size in accordance with ASTM 5. Incoloy Alloy 800HT (UNS N08811 or DIN W.Nr. 1.4959) also has the same basic composition as Incoloy 800 and Incoloy 800H but with significantly higher creeprupture strength. The higher strength results from deliberate control of the carbon, aluminum, and titanium contents in conjunction with a high-temperature anneal. Alloy 800/800H/800HT alloys are mainly used in chemical and petroleum processing, in power plants for superheater and reheater tubing, in industrial furnaces, petrochemical process piping, heat exchangers, carburizing equipment, and nuclear steam generator tubing.
Incoloy 800/800H/800HT Product Specification Product
Incoloy Alloy 800/H/HT
Equivalents
UNS N08800, N08810, N08811, DIN W.Nr. 1.4876, 1.4958, 1.4959
Items
Pipe, Tubes, Tubing, Fittings, Flanges, Valves, Fasteners, Sheet, Square Bar, Threaded Bar, Plate, Hexagon Bar, Fasteners and Fixings, Round Bar, Flat Bar, Rebar, Angle, Tube & Pipe, Wire
Size
1/4" - 60"
Pipe Type
Seamless, Welded, ERW, Fabricated, Custom Size Pipes
Specifications
ASTM, ASME, DIN, GOST, JIS
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Certification
EN 10204 3.1
Fittings Type
Butt Weld, Screwed & Socket Weld, Flanges, Instrumentation
Other Fittings
Elbows, Tees, Reducers, Caps, Stub Ends, Flanges (ANSI, Table E, D and H), Nuts, Bolts, Screws, Threaded Bars
Incoloy Alloy 800/800H/800HT Product Forms & Standards Product From
Standard
Alloy 800/H/HT Rod and Bar
ASTM B408, EN 10095
Alloy 800/H/HT Plate, Sheet & Strip
ASTM A240, A480, ASTM B409, B906
Alloy 800/H/HT Seamless Pipe & Tube
ASTM B829, B407
Alloy 800/H/HT Welded Pipe & Tube
ASTM B514, B515, B751, B775
Buttweld Fittings
ASTM B366
Forging (Flange & Fittings)
ASTM B564, DIN 17460
Chemical, Mechanical & Physical Properties of Alloy 800/H/HT Chemical Composition of Alloy 800/H/HT Element
Values in %
Alloy
Alloy 800
Alloy 800H
Alloy 800HT
Ni
30-35
30-35
30-35
Cr
19-23
19-23
19-23
Fe, min
39.5
39.5
39.5
2
C, max
0.10
0.05-0.10
0.06-0.10
Al
0.15-0.60
0.15-0.60
0.25-0.60
Ti
0.15-0.60
0.15-0.60
0.25-0.60
Al+Ti
0.30-1.20
0.30-1.20
0.85-1.20
Physical Properties of Alloy 800/H/HT Density
0.287 lb/in3 / 7.94 g/cm3
Melting Point
2475 – 2525 °F/ 1357 – 1385 °C
Specific Heat @ 70°F
0.11 Btu/lb•°F
Permeability @ 70°F Annealed
1.014 (200 Oersted)
Curie Temperature
-115 °C/ -175 °F
Elastic Modulus
28.50 X 106 psi
Electrical Resistivity @ 70°F
595 ohm•circ mil/ft
Annealling Incoloy 800
983 – 1038 °C / 1800 – 1900 °F
Annealling Incoloy 800H / Ht
1147 – 1177°C / 2100 – 2150 °F
Quench
Rapid Air / Water
Mechanical Properties of Alloy 800, 800H or 800 HT Grade
Tensile Strength (MPa) min
Yield Strength 0.2% Proof (MPa) min
Elongation (% in 50mm) min
3
800-H-HT
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Psi – 75,000, MPa – 520
Psi – 30,000, MPa –205
30
The above are typical minimum values.
Characteristics of Alloy 800/800H/800HT Incoloy 800H and 800HT are both austenitic high-strength solid-solution nickel-iron-chromium alloy with controlled levels of carbon, aluminium, titanium, silicon and manganese and controlled content of (Al + Ti). The analyses are similar to that of Incoloy 800, but a special solution anneal treatment (with grain sizes ≥ 90 μm/ASTM No. 4) gives significantly increased creep-rupture strength for Incoloy 800H above 600 ℃ and highest creep-rupture strength for Incoloy 800HT above 700 ℃ due to the precipitation of TiC.
Incoloy 800H is characterized by: • • •
Good creep-rupture properties at temperatures above 600 °C (1110 °F) without loss of ductility during long-term use at temperatures below 700 °C (1290 °F), due to limitation of (Ti + Al) content to max. 0.7 % Good resistance to reducing, oxidizing and nitriding atmospheres and to atmospheres which alternate between reducing and oxidizing conditions Metallurgical stability in long-term application at high temperatures
Incoloy 800HT is characterized by: • • •
Excellent creep strength at temperature above 700℃. However, for applications where frequent excursions to temperatures lower than 700℃ during service cannot be excluded or parts of the material are permanently exposed to a temperature below 700℃, the use of Incoloy 800H is recommended Good resistance to reducing, oxidizing and nitriding atmospheres and to atmospheres which alternate between reducing and oxidizing conditions Metallurgical stability in long-term application at high temperatures
Corrosion Resistance of Alloy 800/800H/800HT • • •
Incoloy 800, like many austenitic stainless steels, can be sensitized, or made susceptible to intergranular attack in some aggressive media, by exposure to the temperature range of 1000 to 1400°F (540–760°C). Alloys 800, 800H and 800HT have the same nickel, chromium, and iron contents and generally display similar corrosion resistance. The high nickel and chromium contents of Incoloy 800H, 800HT and 800 ensure excellent resistance to oxidation. Compared to Incoloy 800, Alloy 800H and 800HT can be used at higher temperature and still have a good strength, the alloys are also very resistant to carburization, nitridation and oxidizing sulphur-bearing atmospheres at high temperature. 4
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Resistance to hydrogen is excellent for Incoloy 800H and 800HT.
Types of Nickel Alloys ASTM/AISI
UNS No
EN
DIN
JIS
Incoloy 800
N08800
1.4558
X2NiCrAlTi3220
NCF2B
Incoloy 800H
N08810
Incoloy 825
N08825
2.4858
NiCr21Mo
NCF825
Inconel 600
N06600
2.4816
LC-NiCr12Fe
NCF1B
Hastelloy B
N10001
Hastelloy B2
N10665
2.4617
NiMo28
Hastelloy C276
N10276
2.4819
NiMo16Cr15W
Hastelloy C4
N06455
2.461
Hastelloy C22
N06022
2.4602
Inconel 625
N06625
2.4856
Inconel 718
N07718
2.4668
Monel 400
N04400
2.4360
Nickel 200
N02200
2.4060
N12MV
Hastelloy C
•
NW 0276
NiCr22Mo9Nb
NW 4400
Trademark Notice: Some names are trade names and/or trademarks of specific manufacturers. We are 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. 5
Incoloy 800
Incoloy 800H
Incoloy 800 HT
Alloy 800
Alloy 800H
Alloy 800 HT
UNS N08800
UNS N08810
UNS N08811
DIN W.Nr. 1.4876
DIN W.Nr. 1.4958
DIN W.Nr. 1.4959
Manufacturing Incoloy 800/800H/800HT Products Incoloy Alloy 800/800H/800HT Sheet
Incoloy Alloy 800/800H/800HT Plate Cuttings/Profiles
Incoloy Alloy 800/800H/800HT Nuts, Bolts and Fasteners
Incoloy Alloy 800/800H/800HT Plate
Incoloy Alloy 800/800H/800HT Foil, Coil
Incoloy Alloy 800/800H/800HT Wire
Incoloy Alloy 800/800H/800HT Blocks/Slabs
Incoloy Alloy 800/800H/800HT Strip
Incoloy Alloy 800/800H/800HT Ingot
Incoloy Alloy 800/800H/800HT Rod/Bar
Incoloy Alloy 800/800H/800HT Pipes and Tubes
Incoloy Alloy 800/800H/800HT Forgings and Castings
Incoloy Alloy 800/800H/800HT Flanges
Incoloy Alloy 800/800H/800HT Forged Fittings
Incoloy Alloy 800/800H/800HT Buttweld Fittings
About Metallica Metals – The Steel Pipes Factory •
• •
Established in 1975, the Metallica Metals Group (The Steel Pipes Factory) has its operations spread across major cities in India. We are a pioneer in the stainless steel pipes, nickel alloy products, titanium products, carbon steel pipes and alloy steel pipes manufacturing and processing industry. Our products including pipe fittings, flanges, pipes, sheet plates and valves are exported to over 70 countries across the world, while in India we have supplied to even the remote areas. With over 250 tons of sale in stainless steel and carbon steel pipes every day, Metallica has emerged as a prominent vendor for many buyers in India and Overseas More than 3000 tons ready from stock and new production ready in just a few weeks. Feel free to contact us on - Email: info@metallicametals.com | Tel: +91 8928722715 | +91-22-66581538, +91-22-67436694, +91-22-66109768
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