Incoloy 925(Ni – Cr – Mo)

1. Introduce

– Ni – Cr – Mo alloys with Ti, Al additions

– Alloys designed to counteract many extreme environments, including pitting and crevice corrosion

– Utilized from cryogenic temperatures to approximately 648°C

– Improved version of Incoloy 825 with similar corrosion resistance but improved strength through precipitation hardening

– UNS N09925

* UNS

1. Abbreviation of Unified Numbering Systems for Metals and Alloys
2. Unified numbering system 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

* 925 : N09925 : 09XXX : Fe – Cr (Precipitation – Hardenable)
(The last two or three digits of the six UNS numbers are used 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 – Cr), typically with large additions of Fe and Cr
3. Alloy containing less than 50% Ni, with a higher content of Fe compared to Inconel (Ni – Cr – (Mo))

2. Property

– Good strength, corrosion resistance, oxidation and chloride stress corrosion cracking resistance, crevice corrosion resistance

[Incoloy 925 Chemical Composition (%)]

[Incoloy 925 Mechanical Properties]

[Incoloy 925 Physical Properties]

3. Standard & Specification

– Specification : UNS N09925

4. Available Form

– Rod & Bar & Wire

– Forgings

– Plate & Sheet & Strip

– Pipe & Tube

5. Application & Product

– Oil & Gas, Marine

(1) Fasteners / (2) Flanged shafts / (3) High pressure valves / (4) Pump shafts