Home > Incoloy Alloy Pipes & Tubes Incoloy Alloy 925 Pipes & Tubes
Material Description
UNS N09925
Chemical Composition, %
Ni
Fe
Cr
Mo
Cu
Ti
C
Mn
S
Si
Al
42.0-46.0
22.0 min
19.5-22.5
2.5-3.5
1.5-3.0
1.9-2.4
.03 max
1.0 max
.03 max
.5 max
.1-.5
Incoloy alloy 925 is a nickel-iron-chromium alloy with additions of
molybdenum, copper, titanium and aluminum. It has the 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.
Characteristics
● A high level of corrosion resistance
● In both reducing and oxidizing environments, it has a general corrosion resistance, pitting, crevice corrosion, inter-granular corrosion and stress-corrosion cracking
● Particularly useful for the environments of crude oil and natural gas, sulfuric acid, phosphoric acid, and seawater
● Good resistance to stress-corrosion cracking in a sour environment at high pressure and temperature.
● Good resistance to sulfide stress cracking, a form of hydrogen embrittlement.
Application
● Sulfide stress cracking and stress-corrosion cracking in “sour” (H2S containing) crude oil and natural gas.
● Tubing for Down-hole and surface gas well
● High-strength tubing system
Seamless Tube Information:
ASTM B-163 / ASME SB-163, ASTM B-407 / ASME SB-407
Outside Diameter: 6.0-114 mm
Wall Thickness: 0.5-15 mm
Length: Max.24000mm (the maximum length is for the scope of special diameters and walls)
Other sizes are on the request