Alloy 625

Alloy 625 (UNS N06625) nickel tube is made of nickel chromium molybdenum alloy added with niobium, which has good corrosion resistance and high strength. Due to the high nickel content, alloy 625 is not affected by stress corrosion cracking caused by chloride. It also has good pitting and crevice corrosion resistance. The strength of alloy 625 comes from the hardening effect of molybdenum and niobium on its Ni Cr matrix. Although the alloy was developed for high temperature strength, its highly alloyed composition also provides significant overall corrosion resistance.

The alloy has excellent thermal stability. Alloy 625 is the preferred alloy for surfacing applications in oil and gas / petrochemical and oil refining markets.

gnf

Chemical composition:

%

Ni

Cr

Mo

Fe

C

Mn

Si

P

S

Co

Nb+Ta

Al

min

58.0

20.0

8.0

3.15

max

23.0

10.0

5.0

0.10

0.50

0.50

0.015

0.015

1.00

4.15

0.40

Physical properties:

Density

8.44 g/cm3

Melting range

1290-1350℃

Application:

Aircraft piping and exhaust system

heat exchanger

corrugated pipe

Expansion joint

Gasket and shock absorber seal

Flue gas desulfurization system

Oil and gas

nuclear energy

Aerospace

paper industry

From

UNS

Alloy

Scope (mm)

Seamless pipe &tube

Welded pipe & tube

Fitting/ Flange

Sheet, Plate, Strip

UNS N06625

ALLOY 625

OD: 4.5-355mm
WT: 0.7-20mm
L: 0-12000mm
OD: 17.1-914.4mm;
WT: 1-36mm;
L:<12000mm
DN15-DN600 Plate: WT<6mm, WDT<1200mm, L<3000mm; WT>6mm, WDT<2800mm, L<8000mm
Coil: WT:0.15-3mm WDT:<1000mm