Incoloy 800(Ni – Cr)

1. Introduce

– Ni – Cr alloy designed for application in corrosive and high temperature environments

– Used in parts intended for high temperature oxidation resistance in temperature ranges up to 816°C

(Temperatures above 816℃ : Incoloy 800H and 800HT, which have better stress rupture and creep resistance than Incoloy 800, are applied)

– UNS N08800

* UNS

1. Abbreviation for Unified Numbering Systems for Metals and Alloys
2. Unified Numbering Systems for metals and alloys
3. A representative number that is compatible with metals and alloys defined in many material – related codes such as ASTM, AISI, ASME, AWS, etc.

* N : Nickel and Nickel Alloys

* 800 : N08800 : 08XXX : Fe – Cr (Incoloy, Haynes)
(Use the last two or three of the six UNS digits as the alloy model number)

* Incoloy

1. Ni – Cr alloy designed to resist oxidation and carbonization at high temperatures
2. A Ni – based superalloy (Ni – Fe – Cr), typicalloy with large additions of Fe and Cr
3. An alloy containing less than 50% Ni, with a higher content of Fe compared to Inconel (Ni – Cr – (Mo))

2. Property

– Excellent corrosion resistance, stress corrosion cracking resistance, heat resistance, strength, weldability, and hot and cold machinability

[Incoloy 800 Chemical Composition (%)]

[Incoloy 800 Mechanical Properties]

[Incoloy 800 Physical Properties]

3. Standard & Specification

– Specification : UNS N08800

4. Available Form

– Pipe & Tube

– Welded Tube

– Sheet & Plate

– Bar

– Forgings

5. Application & Product

– Power Generation, Chemical

(1) Heat exchangers / (2) Steam generators / (3) Thermocouple protection tubes / (4) Piping elbows