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Product Detail

Nimonic90

Detail

Nimonic90

British grade: Nimonic90 nickel-basedsuperalloy

Chinese grade: GH90

I. Overview of Nimonic90 (GH90):

Nimonic90 is an age-strengthened nickel-baseddeformed superalloy, which contains a higher amount of cobalt and variousstrengthening elements. The alloy has high tensile strength and creepresistance , good oxidation resistance and corrosion resistance at 815 870 , and highfatigue strength and good formability and weldability under condition ofrepeated alternating cold and heat. It could be supplied in form of hot-rolledand cold-drawn bars, cold-rolled plates, strips and cold-drawn wire. The alloyis extensively used in turbine engine turbine disks, blades, high-temperaturefasteners, clamps, seals and elastic components.

Chemical composition: see table1-1:

Table 1-1 %

C≤

Si≤

Mn≤

P≤

S≤

Cr≥

Ni≥

B≤

Cu≤

0.13

0.8

0.4

0.02

0.015

18.0-21.0

Balance

0.02

0.2

Other

Ag≤

Al≤

Ti≤

Fe≤

Co≤

Zr≤

Pb≤

Ag≤

0.0005

1.0-2.0

2.0-3.0

1.5

15.0-21.0

0.15

0.002

0.0005

Note: For wire, ω (pb) ≤ 0.0010%.

II. Physical and chemicalproperties:

1. Thermal performance:

(1) Melting temperature range: melting point 1400° C .

(2) Thermal conductivity: see Table 2-1.

Table 2-1

θ /

600

700

800

λ/(W/(m·))

21.76

23.93

25.57

(3)Linear expansion coefficient: see Table 2-2.

Table 2-2

θ /

20-100

20-200

20-300

20-400

20-500

20-600

20-700

20-800

20-900

α1/10-6-1

12.71

13.09

13.51

14.04

14.52

15.03

15.58

16.36

17.38

2. Density: ρ = 8.20g / cm3.

3. Electrical performance:

4. Magnetic properties:   non-magnetic.

5. Chemical properties: The alloy has goodoxidation resistance and corrosion resistance below 1040 ;   apt to form intergranular oxidation above1040 .

III. Specifications and Ex-factorystatus

1. Classification: We can supply in form of seamlesspipes, steel plates, round steel, forgings, flanges, rings, welded pipes, steelstrips, wire and supporting welding materials.

2. Ex-factory status: Seamless Tube: solidsolution + acid white, length can be fixed; Plate: solid solution, pickling, trimming;Welded Tube: solid solution acid white + RT% flaw detection; Forging: annealing+ turning; the bar is delivered in the state of forging, surface polishing orlapping; the strip is delivered after cold rolling, solid solution softening,and descaling; the wire is solid-dissolved and pickled in a disc or straightstrip, solid solution straight polished.


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Nickle base,
Cobalt base,
Soft  magnitic,
Expansion ,
Elastic and other special alloy
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Sheet, plate, bar and other    profiles can be costumized