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Incoloy Alloy A-286

Incoloy Alloy A-286
Product Details

Incoloy A-286 (UNS S66286)


Chemical Composition Wt.%

alloy

%

Ni

Cr

Fe

Mo

P

V

C

Mn

Si

S

B

Al

Ti

Cu


A-286

min

24.0

13.5

bal

1.0


0.1


1.0



0.001


1.75


max

27.0

16.0

bal

1.5

0.03

0.5

0.08

2.0

1.0

0.02

0.01

0.4

2.35

0.25


Physical Constants

density g/cm³

Melting point℃

Thermal conductivity
λ(w/m·℃)

Specific heat capacity)J/kg·℃

Flexible mold
GPa

Shear modulus
Gpa

μΩ·m

Poisson's ratio

Linear expansion coefficient
a/10-6℃-1


7.99


1364
1424


14.2
(100℃)





0.914


15.7
(20~100℃)

The minimum mechanical properties of the alloy at room temperature

Typical mechanical properties

Rm N/mm2

RP0.2N/mm2

A5 %

HB

Solution treatment

930

590

15

≤341

Process
performance and requirement
sharacters

1, the alloy has good malleability, forging heating temperature 1140 ℃, final forging 900 ℃
2, the average grain size of the alloy and forging deformation degree, the final forging temperature is closely related.
3, the alloy has a satisfactory welding performance. The alloy is soldered in the solution state and the aging is performed after welding.


Microstr ycture

The alloy in the standard state of heat treatment, the γ matrix with spherical uniform dispersion of NI3 (Ti, Al) -type γ 'phase and
TiN, TiC, a small amount of M3B2 grain boundaries, grain boundaries may have a small amount of η phase and L phase.

Applications

The alloy is Fe-25Ni-15Cr-based superalloy, adding molybdenum, titanium, aluminum, vanadium and trace boron comprehensive strengthening. Below 650 ℃ with high yield strength and long-lasting, creep strength, and has better processing plasticity and satisfactory welding performance. Suitable for the manufacture of high temperature bearing components for long-term operation of aeroengines below 650 ℃, such as turbine disks, compressor disks, rotor blades and fasteners.

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