Incoloy Alloy
800H
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Incoloy 800H Introduction
Solid Solution
Strengthened Alloy
Resistance
Behavior
High Temperature Characteristics
Strength &
Stability
Oxidation
Resistance
Carburization
Resistance
Sulfidation
Resistance
Nitriding
Resistance
Carbonitriding
Resistance
Resistance to
Molten Salts
Corrosion Resistance
Sulfuric
Acid
Hydrochloric
Acid
Hydrofluoric
Acid
Phosphoric
Acid
Nitric
Acid
Organic
Acids
Alkalies
and Salts
Seawater
Overview
As a leading supplier & manufacturer in China, AEETHER supply cost-effective Incoloy 800H Products.
INCOLOY® alloy 800H (UNS N08810) 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.
With the issuance of Code Case 1325-7 and the common use of the term “800H”, there was no longer a need to refer to “Grade 2” because it was replaced by 800H, and the material that had been called Grade 1 became, simply, INCOLOY alloy 800.
Mechanical Properties
The major differences between alloys 800, 800H and 800HT are mechanical properties. The differences stem from the restricted compositions of alloys 800H and 800HT and the high-temperature anneals used for these alloys. In general, alloy 800 has higher mechanical properties at room temperature and during short-time exposure to elevated temperatures, whereas alloys 800H and 800HT have superior creep and rupture strength during extended hightemperature exposure.
Corrosion Resistance
Alloys 800, 800H and 800HT have the same nickel, chromium, and iron contents and generally display similar corrosion resistance. Since alloys 800H and 800HT are used for their high-temperature strength, corrosive environments to which these alloys are exposed normally involve hightemperature reactions such as oxidation and carburization.
Incoloy 800H Chemical Composition
S ≤ 0.015%
Si ≤ 1.00%
C: 0.05% ~ 0.10%
Mn ≤ 1.50%
Al: 0.15% ~ 0.60%
Ti: 0.15% ~ 0.60%
Cu ≤ 0.75%
Fe ≥ 39.5%
Cr: 19.0% ~ 23.0%
Ni: 30.0% ~ 35.0%
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Incoloy 800H Standards
Data Sheet
Physical Properties
| Density | g/cm3 | 7.94 | |
|---|---|---|---|
| lb/in.3 | 0.287 | ||
| Melting Range | °F | 2475 - 2525 | |
| °C | 1357 - 1385 | ||
| Specific Heat | 32-212°F | Btu/lb•°F | 0.11 |
| 0-100°C | J/kg•°C | 460 | |
| Permeability at 70°F (21°C) and 200 oersted (15.9 kA/m) | Annealed | 1.014 | |
| Hot-Rolled | 1.009 | ||
| Curie Temperature | °F | -175 | |
| °C | -115 | ||
Mechanical Properties
| Temperature | Hardness BHN |
Tensile Strength | Yield Strength (0.2% Offset) |
|||
|---|---|---|---|---|---|---|
| °F | °C | ksi | MPa | ksi | MPa | |
| 80 | 27 | 126 | 77.8 | 536 | 21.7 | 150 |
| 800 | 425 | – | 67.5 | 465 | 18.8 | 130 |
| 1000 | 540 | 90 | 62.7 | 432 | 13.0 | 90 |
| 1200 | 650 | 84 | 54.8 | 378 | 13.5 | 93 |
| 1300 | 705 | 82 | 47.7 | 329 | 15.8 | 109 |
| 1400 | 760 | 74 | 34.2 | 236 | 13.1 | 90 |
Incoloy 800H Applications
FAQ
What is the difference between Incoloy 800H and Incoloy 800?
Incoloy 800H is an optimized version of Incoloy 800. It restricts the carbon content to a narrower range than Incoloy 800. This gives Incoloy 800H more stable performance at high temperatures. In fact, Incoloy 800H has largely replaced Incoloy 800 in current market applications.
Can you tell me how to place an order for your products?
You can send your requirements to our email: [email protected], or fill out the form at the bottom of the page to submit your request. Our sales team will provide you with a detailed quotation. If you are interested in our offer, please send us a purchase order (PO). We will provide you with a Proforma Invoice (PI) for payment. We will begin production as soon as we receive the advance payment. We will notify you immediately once the materials are ready.
How long does it take to receive a quote after submitting an inquiry?
Our sales team will process your request as soon as possible. Typically, we can send you a quote within 24 hours. If any information in your inquiry is unclear or if we are unable to provide a quote, we will promptly inform you of the specific situation.
How do you ensure the chemical composition of the materials meets the requirements?
During the smelting stage, we precisely control the raw material ratios and take samples for chemical analysis. Once the materials are completed, we use a PMI tester to conduct rapid testing on the finished products to confirm the correct composition. If you require more authoritative verification, we can also send the materials to a third-party testing laboratory for final chemical analysis and reporting.
What does the term "tensile strength" mean?
Tensile strength is a key indicator for evaluating a material’s strength performance. It is determined through tensile testing to measure the maximum stress a material can withstand before breaking. This metric directly reflects a material’s ability to resist tensile fracture; the higher the value, the more resistant the material is to breaking. If your application environment requires specific fracture resistance, tensile strength is a critical factor in material selection. Additionally, it serves as a reference for the material’s overall strength.
What are physical properties?
Physical properties refer to the inherent physical attributes of a material. Unlike mechanical properties, physical properties are not affected by material processing. Common physical properties include melting point, density, and electromagnetic characteristics.
Related Article
More Incoloy Grades +
800
S ≤ 0.015%
Si
Si ≤ 1.00%
C ≤ 0.10%
Mn
Mn ≤ 1.50%
Al
Al: 0.15% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 39.5%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 30.0% ~ 35.0%
800H
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.05% ~ 0.10%
Mn
Mn ≤ 1.50%
Al
Al: 0.15% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 39.5%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 30.0% ~ 35.0%
800HT
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.06% ~ 0.10%
Mn
Mn ≤ 1.50%
Al
Al + Ti: 0.85% ~ 1.20%
Ti
Al + Ti: 0.85% ~ 1.20%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 39.5%
Cr
Cr: 19.0% ~ 23.0%
Ni
Ni: 30.0% ~ 35.0%
803
S ≤ 0.015%
Si
Si ≤ 1.00%
C
C: 0.06% ~ 0.10%
Mn
Mn ≤ 1.50%
P ≤ 0.045%
Al
Al: 0.15% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe: 29.4% ~ 39.4%
Cr
Cr: 25.0% ~ 29.0%
Ni
Ni: 32.0% ~ 37.0%
825
S ≤ 0.030%
Si
Si ≤ 0.50%
C ≤ 0.05%
Mn
Mn ≤ 1.00%
Al
Al ≤ 0.20%
Ti
Ti: 0.60% ~ 1.20%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe ≥ 22.0%
Mo
Mo: 2.5% ~ 3.5%
Cr
Cr: 19.5% ~ 23.5%
Ni
Ni: 38.0% ~ 46.0%
832
S ≤ 0.005%
Si
Si ≤ 0.70%
C ≤ 0.05%
Mn
Mn ≤ 0.40%
Al ≤ 0.15%
Ti
Ti ≤ 0.40%
Cu
Cu ≤ 0.75%
Fe
Fe: 60.6% ~ 68.9%
Mo
Mo ≤ 0.4%
Cr
Cr: 19.5% ~ 21.0%
Ni
Ni: 8.75% ~ 15.5%
864
S ≤ 0.015%
Si
Si: 0.6% ~ 1.0%
C
C ≤ 0.08%
Mn
Mn ≤ 1.00%
P ≤ 0.045%
Ti
Ti: 0.40% ~ 1.00%
Cu
Cu ≤ 0.75%
Fe
Fe: 29.1% ~ 43.9%
Mo
Mo: 4.0% ~ 4.8%
Cr
Cr: 20.0% ~ 25.0%
Ni
Ni: 30.0% ~ 38.0%
890
S ≤ 0.015%
Si
Si: 1.0% ~ 2.0%
C
C: 0.06% ~ 0.14%
Mn
Mn ≤ 1.50%
P ≤ 0.030%
Nb
Nb: 0.20% ~ 1.00%
Ta
Ta: 0.10% ~ 0.60%
Al
Al: 0.05% ~ 0.60%
Ti
Ti: 0.15% ~ 0.60%
Cu
Cu ≤ 0.75%
Fe
Fe ≥ 17.3%
Mo
Mo: 1.0% ~ 2.0%
Cr
Cr: 23.5% ~ 28.5%
Ni
Ni: 40.0% ~ 45.0%
903
Co
Co: 13.0% ~ 17.0%
Nb
Nb: 2.40% ~ 3.50%
Al
Al: 0.30% ~ 1.15%
Ti
Ti: 1.00% ~ 1.85%
Fe
Fe: 36.5% ~ 47.3%
Ni
Ni: 36.0% ~ 40.0%
907
Si
Si: 0.07% ~ 0.35%
Co
Co: 12.0% ~ 16.0%
Nb
Nb: 4.30% ~ 5.20%
Al
Al ≤ 0.20%
Ti
Ti: 1.30% ~ 1.80%
Fe
Fe: 36.5% ~ 47.1%
Ni
Ni: 35.0% ~ 40.0%
908
S ≤ 0.005%
Si
Si ≤ 0.50%
C ≤ 0.03%
Mn
Mn ≤ 1.00%
P ≤ 0.015%
B ≤ 0.012%
Co
Co ≤ 0.50%
Nb
Nb: 2.70% ~ 3.30%
Al
Al: 0.75% ~ 1.25%
Ti
Ti: 1.20% ~ 1.80%
Cu
Cu ≤ 0.50%
Fe
Fe ≥ 36.1%
Cr
Cr: 3.75% ~ 4.5%
Ni
Ni: 47.0% ~ 51.0%
909
S ≤ 0.015%
Si
Si: 0.25% ~ 0.50%
C ≤ 0.06%
Mn
Mn ≤ 1.00%
P ≤ 0.015%
B ≤ 0.012%
Co
Co: 12.0% ~ 16.0%
Nb
Nb: 4.30% ~ 5.20%
Ta ≤ 0.05%
Al ≤ 0.15%
Ti
Ti: 1.30% ~ 1.80%
Cu
Cu ≤ 0.50%
Fe
Fe: 36.3% ~ 46.9%
Cr
Cr ≤ 1.0%
Ni
Ni: 35.0% ~ 40.0%
925
S ≤ 0.030%
Si
Si ≤ 0.50%
C ≤ 0.03%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
Nb
Nb ≤ 0.50%
Al
Al: 0.10% ~ 0.50%
Ti
Ti: 1.90% ~ 2.40%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe ≥ 22.0%
Mo
Mo: 2.5% ~ 3.5%
Cr
Cr: 19.5% ~ 22.5%
Ni
Ni: 42.0% ~ 46.0%
926
S ≤ 0.010%
Si
Si ≤ 0.50%
C ≤ 0.02%
Mn
Mn ≤ 2.00%
P ≤ 0.030%
N
N: 0.15% ~ 0.25%
Cu
Cu: 0.50% ~ 1.50%
Fe
Fe: 41.7% ~ 47.8%
Mo
Mo: 6.0% ~ 7.0%
Cr
Cr: 19.0% ~ 21.0%
Ni
Ni: 24.0% ~ 26.0%
945
S ≤ 0.030%
Si
Si ≤ 0.50%
C: 0.005% ~ 0.040%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
Nb
Nb: 2.40% ~ 4.50%
Al
Al: 0.01% ~ 0.70%
Ti
Ti: 0.50% ~ 2.50%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe: 5.7% ~ 28.0%
Mo
Mo: 3.0% ~ 4.0%
Cr
Cr: 19.5% ~ 23.0%
Ni
Ni: 45.0% ~ 55.0%
945X
S ≤ 0.030%
Si
Si ≤ 0.50%
C: 0.005% ~ 0.030%
Mn
Mn ≤ 1.00%
P ≤ 0.030%
Nb
Nb: 3.50% ~ 4.50%
Al
Al: 0.01% ~ 0.70%
Ti
Ti: 0.50% ~ 2.50%
Cu
Cu: 1.50% ~ 3.00%
Fe
Fe: 6.2% ~ 20.4%
Mo
Mo: 3.0% ~ 4.0%
Cr
Cr: 19.5% ~ 22.5%
Ni
Ni: 50.0% ~ 55.0%
MA956
C
C ≤ 0.10%
Mn
Mn ≤ 0.30%
P ≤ 0.020%
Y2O3
Y2O3: 0.3% ~ 0.7%
Co
Co ≤ 0.30%
Al
Al: 3.75% ~ 5.75%
Ti
Ti: 0.20% ~ 0.60%
Cu ≤ 0.15%
Fe
Fe: 70.1% ~ 75.9%
Cr
Cr: 18.5% ~ 21.5%
Ni ≤ 0.5%
A-286
S ≤ 0.030%
Si
Si ≤ 1.00%
C
C ≤ 0.08%
Mn
Mn ≤ 2.00%
P ≤ 0.040%
B: 0.001% ~ 0.010%
V
V: 0.10% ~ 0.50%
Al
Al ≤ 0.35%
Ti
Ti: 1.90% ~ 2.35%
Fe
Fe: 49.1% ~ 56.0%
Mo
Mo: 1.00% ~ 1.50%
Cr
Cr: 13.5% ~ 16.0%
Ni
Ni: 24.0% ~ 27.0%
020
S ≤ 0.035%
Si
Si ≤ 1.00%
C ≤ 0.07%
Mn
Mn ≤ 2.00%
P ≤ 0.045%
Nb + Ta: 8*C% ~ 1.00%
Nb + Ta: 8*C% ~ 1.00%
Cu
Cu: 3.00% ~ 4.00%
Fe
Fe: 29.9% ~ 44.0%
Mo
Mo: 2.0% ~ 3.0%
Cr
Cr: 19.0% ~ 21.0%
Ni
Ni: 32.0% ~ 38.0%
028
S ≤ 0.030%
Si
Si ≤ 1.00%
C ≤ 0.03%
Mn
Mn ≤ 2.50%
P ≤ 0.030%
Cu
Cu: 0.60% ~ 1.40%
Fe
Fe: 29.0% ~ 36.8%
Mo
Mo: 3.0% ~ 4.0%
Cr
Cr: 26.0% ~ 28.0%
Ni
Ni: 30.0% ~ 34.0%
DS
S ≤ 0.030%
Si
Si: 1.90% ~ 2.60%
C
C ≤ 0.10%
Mn
Mn: 0.80% ~ 1.50%
Co
Ni + Co: 34.5% ~ 41.0%
Ti
Ti ≤ 0.20%
Cu
Cu ≤ 0.50%
Fe
Fe: 35.1% ~ 45.0%
Cr
Cr: 17.0% ~ 19.0%
Ni
Ni + Co: 34.5% ~ 41.0%
330
S ≤ 0.030%
Si
Si: 0.75% ~ 1.50%
C
C ≤ 0.08%
Mn
Mn ≤ 2.00%
P ≤ 0.030%
Cu
Cu ≤ 1.00%
Fe
Fe: 39.4% ~ 46.1%
Cr
Cr: 17.0% ~ 20.0%
Ni
Ni: 34.0% ~ 37.0%
25-6HN
S ≤ 0.030%
Si
Si ≤ 1.00%
C ≤ 0.03%
Mn
Mn ≤ 2.00%
P ≤ 0.040%
N
N: 0.18% ~ 0.25%
Cu
Cu ≤ 0.75%
Fe
Fe: 41.4% ~ 50.3%
Mo
Mo: 6.0% ~ 7.0%
Cr
Cr: 20.0% ~ 22.0%
Ni
Ni: 23.5% ~ 25.5%
27-7MO
S ≤ 0.010%
Si
Si ≤ 0.50%
C ≤ 0.02%
Mn
Mn ≤ 3.00%
P ≤ 0.030%
N
N: 0.30% ~ 0.40%
Cu
Cu: 0.50% ~ 1.50%
Fe
Fe: 35.5% ~ 42.6%
Mo
Mo: 6.5% ~ 8.0%
Cr
Cr: 20.5% ~ 23.0%
Ni
Ni: 26.0% ~ 28.0%