Chemical Composition

Wt.%

%

Ni

Cr

Fe

C

Mn

Si

Cu

Mo

Al

Ti

P

S

min

38

19.5

bal

1.5

2.5

0.6

max

46

23.5

bal

0.05

1

0.5

3

3.5

0.2

1.2

0.02

0.03

Physical

Constants

Density.g/cm³

8.1 g/cm³

Melting Range

1370-1400 ?

The minimum mechanical properties of the alloy at room temperature

Typical mechanical properties

tensile strength

Rm N/mm2

Yield Strength

RP0.2N/mm2

Elongation

A5 %

HB

Solution treatment

550

250

35

=200

Microstr ycture

825 is a face-centered cubic lattice structure.

Characters

1. Good resistance to stress corrosion cracking performance

2. Good resistance to pitting and crevice corrosion

3. very good oxidation resistance and non-oxidizing hot acid properties

4. Good mechanical properties both at room temperature and up to 550 ?

5. With manufacturing temperature up to 450 ? pressure vessel certification

Applications

825 alloy is widely used in a variety of industrial temperature does not exceed 550 ?.

1. Sulfuric acid pickling factory heating pipes, containers, baskets and chains.

2. Sea water cooling heat exchanger, marine product pipeline system, acid gas environment pipeline.

3. Phosphate production in the heat exchanger, evaporator, washing, immersion tubes and so on.

4. Oil refining in the air heat exchanger

5. Food Engineering

6. Chemical processes

7. High-pressure oxygen application of flame-retardant alloys