Inconel 800ht
• Higher creep and rupture properties for high temperature situations above 1100°F (600°C)
• Resistant to high temperature corrosion and prolonged exposure
• Readily machined by standard methods
• Resistance to aqueous corrosion at moderate temperatures
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
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Super alloys are also referred to as high performance alloys. They have good creep and oxidation resistance, and are utilized where high surface stability is required. They also have an ability to function under high temperatures and mechanical stress. They can be strengthened by solid-solution hardening, work hardening, and precipitation hardening. They are divided into three groups such as iron-based, nickel-based, and cobalt-based alloys.
Incoloy 800HT is a nickel-iron-chromium alloy, and also a modified version of alloy 800. It has high creep-rupture strength. The following datasheet gives an overview of Incoloy 800HT.
Product Parameter
|
PRODUCT FORM |
SIZE RANGE FROM |
SIZE RANGE TO |
|
Alloy 800HT pipe |
0.5 in |
8 in |
|
Alloy 800HT tube |
12 mm |
260 mm |
|
Alloy 800HT pipe fittings |
0.5 in |
8 in |
|
Alloy 800HT flanges |
0.5 in |
8 in |
Feature
CHEMICAL COMPOSITION
The base composition of 800H/HT is identical to the parent Alloy 800. However, in both 800H® and 800HT, the levels of carbon, aluminum, and titanium are modified for improved creep resistance. The base 800 grade has a carbon range of 0 - 0.10%, while 800H raises the minimum carbon level to 0.05%. Similarly, the base 800 grade has a combined aluminum and titanium content requirement of 0.30 - 1.20%, while 800HT raises the minimum Al + Ti level to 0.85% and increases the minimum carbon to 0.06%.
CORROSION RESISTANCE
Both grades share the corrosion resistant characteristics of the base grade Alloy 800, including good general corrosion resistance, as well as good resistance to reducing and oxidizing acids, organic acids, seawater, salts, and particularly excellent resistance to nitric acid. Alloy 800H and 800HT also exhibit excellent corrosion resistance to chloride stress corrosion cracking (SCC). However, alloys 800H and 800HT are not recommended for sulfuric acid service. Additionally, they are susceptible to chromium carbide precipitation along grain boundaries when subjected to temperatures in the range of 1000°F - 1400°F (538°C - 760°C).
ELEVATED TEMPERATURE RESISTANCE
800H and 800HT have outstanding resistance to oxidation, carburization, and sulfidation at temperatures up to 1800°F.
MECHANICAL PROPERTIES
800H and 800HT are typically supplied in a low-strength solution annealed condition. While intended for high-temperature applications, they have excellent toughness down to cryogenic temperatures.
HEAT TREATMENT
Alloys 800H and 800 HT cannot be strengthened by heat treating. They are typically solution annealed at 2050°F - 2150°F (1121°C - 1177°C) followed by rapid cooling. Stress-relieving at 1000°F - 1600°F (538°C - 870°C) may also be performed after cold working to reduce residual stresses and prevent distortion.
WORKABILITY
Alloy 800H and 800HT can be cold worked using common methods and should be in the annealed condition prior to cold working. The large grain size produced in both grades from solution annealing can lead to “orange peel” surface roughening after cold working. Hot-working should be done above 1600°F (871°C).
Application
Alloy 800H and 800HT are used at temperatures from 1100°F – 1800°F (593°C – 982°C) where creep and stress rupture failure is a concern. 800H® is typically used at the lower end of this range, while 800HT is employed at the upper end. Applications include structural members, furnace equipment, heat exchangers, petrochemical vessels and piping, and aerospace. CRA offers specialty alloy 800H/HT seamless pipe & tube for use in multiple industries and applications, including:
• Furnace Equipment
• Aerospace
• Petrochemical Vessels & Piping
Our Company
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Packing & Delivery
Our nickel based bars are packaged professionally to ensure they remain intact during transportation and storage. Our packaging materials have been carefully selected to protect nickel based bars from moisture, pollution, and damage. We can provide different packaging methods according to your requirements, such as wooden boxes, pallets, cardboard boxes, etc., to meet your specific needs. Our packaging process strictly follows international standards to ensure that the nickel based bars you receive are high-quality and undamaged products. No matter how much quantity or size you need, we can provide you with efficient, reliable, and satisfactory services. Please contact us for more information.
Customer Visit
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FAQ
Q: What is your terms of payment ?
A: Payment<=1000USD, 50% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment.or negotiable.
Q: What are the advantages of your company ?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other Nickel base alloy companies.
Q: How many coutries you already exported ?
A: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.
Q: Can you provide sample ?
A: Yes. We can provide the small samples in stock for free, as long as you contact us.Customized samples will take about 5-7 days.
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