Introduction
Inconel 690 is a high-chromium nickel alloy having excellent resistance to many corrosive aqueous media and high-temperature atmospheres. The alloy's 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.
Typical Uses and Applications
Inconel 690 is widely used for nitric acid or nitric-plus-hydrochloric acid. Examples are tail-gas reheaters used in production of nitric acid abd steam-heating coils in nitric-plus-hydrochloric acid solutions used for picking stainless steels and reprocessing nuclear fuels, Inconel 690 us also useful for hightemperature service in gases containing sulfur.
Product Details
Chemical composition:
Grade |
Ni% |
Cr% |
Fe% |
Ti% |
Mn% |
Si% |
C% |
Cu% |
P% |
S% |
Inconel 690 |
Min 58 |
27~31 |
7~11 |
Max 0.5 |
Max 0.5 |
Max 0.5 |
Max 0.05 |
Max 0.5 |
Max 0.030 |
Max 0.015 |
Specifications:
Grade |
UNS |
Werkstoff Nr. |
Inconel 690 |
N06690 |
2.4642 |
Physical Properties:
Grade |
Density |
Melting Point |
Inconel 690 |
8.2 g/cm3 |
1340°C-1377 °C |
Mechanical Properties:
Grade |
Tensile Strength |
Yield Strength |
Elongation |
Brinell Hardness (HB) |
Inconel 690 (Annealed) |
>580 MPa |
>260 MPa |
30 |
150-240 |
Available Specifications:
Pipe Smls |
Tube
Smls |
Sheet/Plate |
Bar |
Welding Electrode |
Filter Metal |
Wire |
ASTM B
ASME SB 163 |
B163 |
ASTM B
ASME SB 168 /906 |
ASTM B
ASME SB 166, |
152 - AWS A5.11 / ENiCrFe-7 |
52 -
AWS A5.14 / ERNiCrFe-7 |
ASTM B 564 /ASME SB
564, |
Available forms:
Inconel 690 wire, bar, rod, strip, forging, plate, sheet, tube, fastener and other standard forms are available.