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Nimonic 93
product details

Nimonic93

British grade: Nimonic 93 nickel-basedsuperalloy

Chinese grade: GH93

French grade: NCK2OTA

I. Overview of Nimonic93 (GH93):

Nimonic93 is a precipitation-hardenednickel-based alloy containing higher cobalt and chromium, which has higherstrength and better structural stability and can work below 815 ° C with goodcomprehensive properties. It is extensively used in turbine blades for aircraftengines, turbine disks and fasteners for small engines. The alloy has good hotworking plasticity, and can be supplied in form of plate, bar and forging.

Chemical composition: see table 1-1:

Table 1-1 %

C≤

Si≤

Mn≤

P≤

S≤

Cr≥

Ni≥

Mo≥

Cu≤

0.13

1

1

0.015

0.015

18.0-21.0

Balance

-

0.2

Other

N≤

Al≤

Ti≤

Fe≤

Co≤

B≤

Pb≤

Nb≤

-

1.0-2.0

2.0-3.0

1

15.0-21.0

0.02

0.0025

-

Note: B isadded in a calculated amount, and the addition of trace amounts of Ce, Zr, Mgis allowed.

II. Physical and chemicalproperties:    

1. Thermal performance:                                       

(1) Melting temperature range: 1360 1390.

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

Table 2-1

θ /

20

100

200

300

400

500

600

700

800

900

1000

λ/(W/(m·))

11.47

12.77

14.44

15.99

17.54

18.97

20.64

22.32

23.99

25.83

27.88

(3). Specific heat capacity: See Table 2-2.

Table 2-2

θ /

20

100

200

300

400

500

600

700

800

900

1000

c/(J/(kg.))

446

467

494

520

547

572

600

626

652

679

706

(4) Linear expansion coefficient: see Table2-3.

Table 2-3

θ /

16100

16200

16300

16400

16500

16600

16700

α / 10 -6-1

11.91

12.97

13.52

14.1

14.49

14.99

15.61

2. Density: ρ = 8.19g / cm3.

3. Electrical performance:

4. Magnetic properties:   non-magnetic.

5. Chemical properties:

(1) Anti-oxidation performance: See Table 2-4for the oxidation rate after 100h test in air medium.

(2) Corrosion resistance: The alloy has goodheat and corrosion resistance.

Table 2-4

θ /

700

800

900

Oxidation rate / (g / (m 2 · h))

0.0398

0.0236

0.1435

Note: The test method is according toYB48-1964.

III. Specifications and Ex-factorystatus

1. Classification: We can supply in form ofseamless pipes, steel plates, round steel, forgings, flanges, rings, weldedpipes, steel strips, 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, surfacepolishing or lapping; the strip is delivered after cold rolling, solid solutionsoftening, and descaling; the wire is solid-dissolved and pickled in a disc orstraight strip, solid solution straight polished.


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