Hot rolled Alloy 800H ASTM B408 UNS N08810 DIN 1.4958 Incoloy 800H Round Steel Bar

Q:How does your factory do regarding quality control?

A:Quality is priority. we always attach great importance to quality controlling from the beginning to the end.Mill Test Certificate is supplied with shipment. If needed, a Third Party Inspection is acceptable.

Q:May I have some samples before bulk order?

A:Yes, of course. samples are free but you have to pay the courier.

Q:Can we visit your Company?

A:Surely. Welcome to China and we will be honored to have a customer and friend.

Q:What is the payment terms?

A:T/T, L/C ,Western Union,etc.

Q:What's your delivery time?

A:For stocks, we can send the goods to loading port within 7 days after receiving your deposit.

For production period, it usually needs about 10days- 60days after receiving the deposit.

Q:Is it OK to mark my logo on your products?

A:Yes. OEM and ODM are available for us.

ASTM B 409, B 408, B 407, B 564
UNS Number N08810/N08811
Other common names: Alloy 800, Alloy 800H/HT

Incoloy 800, 800H, and 800HT are nickel-iron-chromium alloys with good strength and excellent resistance to oxidation and carburization in high-temperature exposure. These nickel steel alloys are identical except for the higher level of carbon in alloy 800H, and the addition of up to 1.20 percent aluminum and titanium in alloy 800HT. Incoloy 800 was the first of these alloys and it was slightly modified into Incoloy 800H. This modification was to control carbon (.05-.10%) and grain size to optimize stress rupture properties. Incoloy 800HT has further modifications to the combined titanium and aluminum levels (.85-1.20%) to ensure optimum high temperature properties.The nickel alloy is dual certified (800H/HT) and combines the properties of both forms. Incoloy 800H/HT alloy was intended for high temperature structural applications. The nickel content makes the alloys highly resistant to both chloride stress-corrosion cracking and to embrittlement from precipitation of sigma phase. The general corrosion resistance is excellent. In the solution annealed condition, alloys 800H and 800HT have superior creep and stress rupture properties. Today, most suppliers, only carry the dual certified 800H/HT alloy.
Incoloy 800 is primarily used in applications with temperatures up to 1100° F, where alloys 800H and 800HT are normally used in temperatures above 1100° F where resistance to creep and rupture is required. The chemical balance allows the nickel steel alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres. Incoloy 800HT will not become embrittled even after long periods of usage in the 1200-1600° F range where many stainless steels become brittle. Excellent cold forming characteristics typically associated with the nickel-chromium alloys are exhibited with 800HT. When cold formed extensively the grain size produces a visibly undulated surface called “orange peel”. Incoloy 800HT can be welded by the common techniques used on stainless steels.
In what forms is Incoloy® 800H/HT available?
• Sheet
• Plate
• Bar

• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
• Wire
What are the characteristics of Incoloy 800H/HT?
• High temperature strength
• High creep rupture strength
• Resistant to oxidation and carburization in high temperature environments
• Good corrosion resistance in many acidic environments
• Good resistance to many sulfur-containing atmospheres

Alloy 800 (UNS N08800) Chemical Composition, %

*Note that the chemical composition of Incoloy 800HT will always be within the limits of Incoloy 800H.
*Note the limits of Incoloy 800H may or may not be within the limits of Incoloy 800HT.
In what applications is Incoloy 800H/HT used?
• Ethylene furnace quench boilers
• Hydrocarbon cracking
• Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
• Industrial furnaces
• Heat-treating equipment
• Chemical and petrochemical processing
• Super-heater and re-heaters in power plants
• Pressure vessels
• Heat exchangers
Alloys 800H/HT are used in a variety of applications involving exposure to corrosive environments and high temperatures such as heat treating equipment, chemical and petrochemical processing, nuclear power plants and the paper pulp industry. Heat-treating equipment such as baskets, trays, and fixtures employ Incoloy 800H/HT. Chemical and petrochemical processing industries use the alloys for heat exchangers and other piping systems in nitric acid media especially where resistance to chloride stress-corrosion cracking is required. Power plants use them for super-heater and re-heater tubing.

Product	Tensile (ksi)	.2% Yield (ksi)	Elongation (%)
Rod & Bar	75-100	30-60	60-30