Introduction

INCOLOY 925 (UNS N09925) is an age-hardenable  nickel-iron-chromium alloy with additions of molybdenum, copper, titanium and  aluminum. The alloy’s chemical composition is designed to provide a  combination of high strength and excellent corrosion resistance. The nickel  content is sufficient for protection against chloride-ion stress corrosion cracking.  The nickel, in conjunction with the molybdenum and copper, also gives  outstanding resistance to reducing chemicals. The molybdenum aids resistance  to pitting and crevice corrosion. The alloy’s chromium content provides  resistance to oxidizing environments. The titanium and aluminum additions cause  a strengthening reaction during heat treatment.

Application

l    Chemical Processing

l    Pollution-control

l    Oil and gas well piping

l    Nuclear fuel reprocessing

l    Components in Pickling equipment like heating coils,  tanks, baskets and chains

l    Acid production

Equal grades

UNS N09925，Nickel 925

Chemical  composition

Nickel...........................................................................42.0-46.0

Chromium ....................................................................19.5-22.5

Iron...................................................................................22  min

Molybdenum  ....................................................................2.5-3.5

Copper.............................................................................1.5-3.0

Titanium  ...........................................................................1.9-2.4

Aluminum.........................................................................0.1-0.5

Manganese  ...................................................................1.0 max.

Silicon  ...........................................................................0.5  max.

Niobium.........................................................................0.5  max.

Carbon  ........................................................................0.03  max.

Sulfur  ..........................................................................0.03  max.

Standards

ASTM B805 Standard Specification for  Precipitation Hardening Nickel Alloys Bar and Wire

ASTM B637 Standard Specification for  Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and  Forging Stock for Moderate or High Temperature Service

Forms of products  available

Bar, plate, forging, wire, strip,  tube/pipe

Stock & Delivery

Delivery of bar is 4 weeks. Delivery  of other product is available per request