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Incoloy 825, NS1402, 2.4858, NCF825 Nickel Base Corrosion Resistant Alloy- SCALE STEEL.

3/31/2021

 
Incoloy®825 is a Ni-Fe-Cr austenite alloy with molybdenum, copper and titanium added.Special corrosion resistance in oxidizing and reducing [SCALE STEEL]environments.Incoloy is a registered trademark of Special Metals, Inc.
 
National Standard
CHINA
GB/T 15007-2008
GB/T  15008-2008
GB/T  2054-2013
YB/T  5353-2012
YB/T  5354-2006
YB/T  5355-2006
NS1402(NS142)

AMERICA
Special  Metals
INCOLOY® alloy 825

ASTM B423
ASTM B424
ASTM B425[SCALE STEEL]
ASTM B564
UNS  N08825

JAPAN
JIS G 4901
JIS G 4902
NCF825

GERMANY
DIN  17744
DIN  17750
DIN  17751
DIN  17752
DIN  17753
NiCr21Mo
2.4858

 
Component Specification
GRADE
NS1402
N08825
2.4858
NCF825

C
≤0.05
≤0.05
≤0.025
≤0.05

Si
≤0.50
≤0.50
≤0.50
≤0.50

Mn
≤1.00
≤1.00
≤1.00
≤1.00

P
≤0.030
--
≤0.020
≤0.030

S
≤0.030
≤0.030
≤0.015
≤0.015

Ni
38.0~46.0
38.0~46.0
38.0~46.0
38.0~46.0

Cr
19.0~23.5
19.5~23.5
19.5~23.5
19.5~23.5

Mo
2.5~3.5
2.5~3.5[SCALE STEEL]
2.5~3.5
2.5~3.5

Cu
1.5~3.0
1.5~3.0
1.5~3.0
1.5~3.0

Ti
0.60~1.20
0.6~1.2
0.60~1.20
0.6~1.2

Al
≤0.20
≤0.20
≤0.20
≤0.20

Co
--
--
≤1.00
--

Fe
--
≥22.0
Other
--

 
 
Corrosion Resistance:
The 825 is resistant to corrosion in a variety of processing environments, including sulfuric acid, sulfurous acid, phosphoric acid, nitric acid, hydrofluoric acid, organic acid and alkali such as sodium, potassium hydroxide, acid [SCALE STEEL]chloride, etc.
Compared with ordinary austenitic stainless steels, the nickel in alloy 825 makes it resistant to chloride stress corrosion, while molybdenum and copper make it highly resistant to corrosion in reduced environments.Chromium and molybdenum are resistant to chloride pitting and corrosion in various oxidizing environments.The addition of titanium makes the material more stable and less susceptible to sensitization [SCALE STEEL]during welding.This insensitive property allows the material to resist intergranular corrosion even when exposed to the sensitive temperature range.
 
Mechanical Properties Of:
825 alloy has good mechanical properties in low and medium temperature environments.At 540°C, the microstructure of[SCALE STEEL] the material will change and the ductility and impact strength will decrease significantly. Therefore, it is not suitable for applications where creep fracture resistance is a design factor.
Alloy 825 can be fully strengthened by cold working.Has good impact strength at room temperature and can maintain this strength at low temperatures.
 
Applications:
As a typical nickel-based alloy, 825 alloy is easy to be formed and welded through technical processing.Application occasions [SCALE STEEL]for petroleum exploitation, chemical equipment, such as heat exchanger and condenser;Components used in sulfuric acid environment and acid gas containing a variety of ions;Pipelines and coolers for oil and steam;Nuclear waste disposal plant.

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