Corrosion resistant alloys
Inconel 690

 

Inconel 690 is a high-chromium nickel alloy with excellent resistance to many corrosive aqueous media and high-temperature atmospheres. The alloy high chromium content gives it excellent resistance to aqueous corrosion by oxidizing acids (especially nitric acid) and salts, and to sulfidation at high-temperatures. In addition to its corrosion resistance, alloy 690 has high strength, good metallurgical stability and favorable fabrication characteristics.

 

Equivalent alloy:

NS315 (China)UNS N06690 (US)、DIN W. Nr. 2.4642 (Germany)NiCr29FeDIN

 

Physical Properties:

Density

8.19 g/cm3

Melting range

1343-1377

 

Chemical composition:

%

Ni

Cr

Fe

C

Mn

S

Si

Cu

min

58.0

27.0

7.0

max

31.0

11.0

0.05

0.50

0.015

0.50

0.50

 

Designation

Standard

Seamless Tubes

ASTM B 163

Forging

ASTM B 564

Seamless pipe and tube

ASTM B 829

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