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Incoloy 800
Oct 31, 2017

Incoloy 800

The content of Cr in Incoloy800 is 15-25%; the content of Ni is 30-45%. Also a small amount of Al and Ti is included.

Incoloy800 is in the austenitic single zone when quickly cooled form high temperature. Therefore the using state is single austenite structure.

Alloy has a high chromium content and sufficient nickel content; so it has comparatively high temperature corrosion resistance and it is widely applied in the industrial application.

In the chloride, low concentration of NaOH aqueous solution and high temperature high pressure water, it has excellent resistance to stress corrosion cracking performance. So it is used to manufacture the stress corrosion cracking resistance equipment.


Incoloy800 Similar Grades

China: 0Cr20Ni32AlTi

America: No8800

Janpan: NCF800

Germany: X2NiCrAlTi3220

 

Incoloy800 Application Range

Chemical Industry

Nuclear Generator

Nitric acid cooler, acetic anhydride cracking tube

Heat exchanging equipment, heat exchanging tube

 

Incoloy800 Kinds & Specifications

Sheet, strip, pipe, forging piece with consultation supply

 

Incoloy800 Standard

ASTM B409…….Stainless steel hot rolled sheet

ASTM B514…….Stainless steel cold rolled sheet

ASTM B515…....Stainless steel/acid-resisting steel cold rolled steel band

 

Incoloy800 Supply Status

hot rolled or cold rolled, after heat treatment, oxidation or acid pickling

 

Incoloy800 Corrosion Resistance

Its corrosion resistance is better than the common Austenitic stainless steel; also better than Incolo600;

In manufacturing the corrosion resistance stress cracking equipment, it is superior to Incolo600 and Monel400 alloy.

 

Incoloy800 Chemical Composition

Typical values(Weight %)

Cr

Ni

C

Si

Mn

P

S

Fe

19.0-23.0

30.0-35.0

0.10

1.00

1.50

0.030

0.015

Remaining Element

 

Incoloy800 Mechanical Property

Temperature ℃

σЬ/MPa

σ0.2/MPa

δ5 /%

100

425

140

160

300

390

95

115

500

360

80

100

600

300

75

95

 

Incoloy800 Physical Property

Melting Temperature Range: 1350~1400℃

Specific Heat: 455J/(kg·℃)

Density: 8.0 g/cm3

Magnetism: no

 

Incoloy800 Processing

 

Hot Working

1. Temperature range1200℃~950℃, cooling method is water quenching or rapid air cooling.

2. In order to get the best performance and creep resistance, the solution treatment should be carried out after heat processing.

3. The material can be directly sent into the furnace heated up to 1200℃; quickly release after holding warm for enough time; and than do thermal processing in the specified temperature range. When the material temperature falls below the thermal processing temperature, reheating is needed.

 

Cold Working

1. When work hardening rate is greater than austenitic stainless steel, it is necessary to select the processing equipment. Cold working material should be in the solid solution heat treatment state,   intermediate annealing should be carried out when cold processing amount is large.

2. If the amount of cold working is larger than 10%,  you need to carry out the second solution treatment for the workpiece.

 

Incoloy800 Welding Procedure

Suitable for the welding with the same material or other metal in any traditional welding process;  such as gas tungsten arc welding, plasma arc welding, manual arc welding, metal inert gas welding, MIG welding, in which the pulsed arc welding is the preferred solution. If using manual electric arc welding, (Ar+He+H2+CO2) is recommended as protection gas.








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