Incoloy 945 Round Bar

Product Details

INCOLOY alloy 945 (UNS N09945) is a corrosionresistant, high strength, age hardenable nickeliron- chromium alloy. Its nickel content provides resistance to stress corrosion cracking. Its combination of nickel, molybdenum and copper gives it outstanding resistance to attack by reducing media, while its high chromium content provides resistance to oxidizing environments. Molybdenum and niobium provide resistance to localized attack such as pitting and crevice corrosion. Niobium, titanium and aluminum react upon heat treatment to precipitate gamma prime and gamma double prime phases that give the alloy its high strength. With this highly desirable combination of properties, alloy 945 is suitable for many demanding applications in oil and gas service. With resistance to sulfide-induced stress corrosion cracking and corrosion in hydrogen sulfide, alloy 945 is ideal for fabrication of down-hole and surface well equipment including tubular products, valves, hangers, landing nipples, tool joints and packers. When cold worked and aged, the alloy provides the properties required for fasteners, pump shafting and high strength piping.

STANDARD PRODUCT FORMS
Bar, forging stock, tubes.

MAJOR SPECIFICATIONS
UNS N09945
NACE MR0175 (Approved to Level VII andLevel VI at 450°F)

LIMITING CHEMICAL COMPOSITION, %
Ni.......45.0 – 55.0
Cr......19.5 – 23.0
Fe............ Balance
Mo..........3.0 – 4.0
Cu..........1.5 – 3.0
Nb..........2.5 – 4.5
Ti............0.5 – 2.5
Al......... 0.01 – 0.7
C..... 0.005 – 0.04
Mn.......... 1.0 max.
Si............ 0.5 max.
P...........0.03 max.
S........ 0.030 max.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES
Density,Ib/in3.........................................................................0.281
g/cm3.......................................................................7.777
Melting Range,°F...................................................2317 –2510
°C...................................................1270 – 1377
Permeability at 200Oersted.............................................1.003
Coefficient of Expansion, 10-6 in/in•°F(μm/m•°C)
70-200°F (21-93°C).................... 7.88(14.19)
70-800°F (21-427°C).................8.40 (15.12)
70-1200°F (21-649°C)...............8.85(15.93)
Young's (Tensile)Modulus.................................. 28.3 x 103ksiShearModulus........................................................10.8 x 103 ksi
Poisson'sRatio........................................................................ 0.31
TYPICAL MECHANICAL PROPERTIES