Alloy 825 Seamless Pipe Nickel Alloy Pipes Incoloy 825 ASTM B426 Standard UNS N08825

INCOLOY 825 Seamless Tubes

Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum and copper. This nickel steel alloy’s chemical composition is designed to provide exceptional resistance to many corrosive environments. It is similar to alloy 800 but has improved resistance to aqueous corrosion. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack such as pitting and crevice corrosion.

Alloy 825 is especially resistant to sulfuric and phosphoric acids. This nickel steel alloy is used for chemical processing, pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment.

INCOLOY® is a registered trademark of the Special Metals Corporation.

Characteristics of Incoloy 825

• Excellent resistance to reducing and oxidizing acids
• Good resistance to stress-corrosion cracking
• Satisfactory resistance to localized attack like pitting and crevice corrosion
• Very resistant to sulfuric and phosphoric acids
• Good Mechanical Properties at both room and elevated temperatures up to approximately 1020° F
• Permission for pressure-vessel use at wall temperatures up to 800°F

• Grade	UNS	Density	Tensile Strength (MPa min)	Yield Strength (MPa min)	Reduction of Area min (%)	Elongation min (%)	Hardness (HRC)
  INCOLOY 825	N08825	8.14	586MPa min	241MPa min	/	30% min	HRC 35 max

• Chemical Composition(%):

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  Ni	C	Fe	Mn	Cr	S	Mo
  38.0-46.0	0.05max	22.0min	1.0max	19.5-23.5	0.03max	2.5-3.5
  Si	Cu	Al	Ti
  0.5max	1.5-3.0	0.2max	0.6-1.2