Inconel Alloy 690 Nickel Alloy Pipe, ASTM B 163 ASME SB 163 ASTM B 167 ASME SB 167 ASTM B 829 ASME SB 829
Inconel Alloy 690
Common Trade Names: Inconel 690, Alloy 690, Nickel 690.
INCONEL alloy 690 (UNS N06690/W. Nr. 2.4642) is a high-chromium nickel alloy having excellent resistance to many corrosive
aqueous media and high- temperature atmospheres. In addition to its corrosion resistance, alloy 690 has high strength, good
metallurgical stability, and favorable fabrication characteristics.
The substantial chromium content gives the alloy outstanding resistance to oxidizing chemicals and to high-temperature
oxidizing gases. The high level of nickel imparts resistance to stress- corrosion cracking in chloride-containing environments as well as to sodium hydroxide solutions.
The properties of INCONEL alloy 690 are useful for various applications involving nitric or nitric/hydrofluoric acid solutions.
Examples are tail-gas reheaters used in nitric acid production and heating coils and tanks for nitric/hydrofluoric solutions
used in pickling of stainless steels and reprocessing of nuclear fuels.
The alloy’s resistance to sulfurcontaining gases makes it an attractive material for such applications as coal-gasification units,
burners and ducts for processing sulfuric acid, furnaces for petrochemical processing, recuperators, incinerators, and glass
vitrification equipment for radioactive waste disposal.
In various types of high-temperature water, alloy 690 displays low corrosion rates and excellent resistance to stresscorrosion
cracking. Thus, alloy 690 is widely used for steam generator tubes, baffles, tubesheets, and hardware in nuclear power
generation.
Specifications
Alloy 690 is designated as UNS N06690, W. Nr. 2.4642 and ISO NW6690.
Rod, Bar, Wire and Forging Stock: - ASTM B166; ASME SB 166, ASTM B 564; ASME SB 564, ASME Code Case N-525, ISO 9723,
MIL-DTL-24801
Seamless Pipe and Tube: - ASTM B 163; ASME SB 163, ASTM B 167; ASME SB 167, ASTM B 829; ASME SB 829, ASME Code
Cases 2083, N- 20, N-525, ISO 6207, MIL- DTL-24803
Plate, Sheet, and Strip: - ASTM B168; ASME SB 168; ASME N-525, ISO 6208, MIL-DTL-24802
Welding Products: - INCONEL Filler Metal 52 - AWS A5.14 / ERNiCrFe-7; INCONEL Welding Electrode 152 - AWS A5.11 /
ENiCrFe-7
Chemical Composition
Nickel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58.0 min.
Chromium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27.0-31.0
Iron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0-11.0
Carbon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05 max.
Silicon .................................... 0.50max.
Manganese ............................. ... 0.50max.
Sulfur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.015 max.
Copper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.50 max.
Inconel Products
The registered trademark name, INCONEL 600 / 601 / 625 / 800- H / 825 is applied as the prefix name to several highly corrosion resistant high temperature strength metal alloys produced by Special Metals Corporation. These INCONEL 600 / 601 / 625 / 800- H / 825 alloys or super alloys are nickel-based alloys that exhibit traits that include good corrosion resistance in aqueous environments, excellent strength and oxidation resistance in high-temperature settings, good creep-rupture strength, and ease of fabrication. Prosaic Steel & Alloys is not affiliated with the manufacturer(s). Orders will be filled to meet specifications from any available source(s). Names are listed solely for reference to help identify products consistent with listed specifications.
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Inconel Tubes
Range: 1 mm OD upt o 254 mm OD in 0.2 TO 20 mm thickness. Type: Seamless, ERW, Welded, CDW Form: Round, Square, Rectangular, Coil, 'U' Shap Others: Hydraulic Tube, Horn Tube, Capillary Tube, Boiler Tube, Precision Tube, IBR Tube, Inconel square Tubes Length: Single Random, Double Random & Cut Length End: Plain End, Beveled End, Threaded |
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Inconel Pipes
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