SE-825 (NO8825)

SECORP designation (UNS NO.)

An nickel-iron-chromium solid solution alloy for use in aggressive corrosive environments. Highly resistant to chloride stress corrosion cracking. Resists both oxidizing and reducing acids, especially sulfuric & phosphoric acid solution.

Major Applications

 

Downhole tubulars for deep corrosive wells. pollution control, radwaste systems. Pickling tank heaters, hooks ect. Chemical handling equipment-valves, pumps and piping.

NOMINAL CHEMICAL COMPOSITION (%):

Cr Ni Fe Mo Cu C Others
21.0 Bal 30.0 3.0 2.2 0.03 Ti-1.0
Al-1.0

TYPICAL MECHANICAL PROPERTIES:

METALLURGICAL CONDITION TENSILE STRENGTH Ksi (MPa) YIELD STRENGTH 2% OFFSET Ksi (MPa) ELONGATION (%) HARDNESS
ANNEALED 92 (635) 36 (250) 52 80 RB
COLD WORKED 135 (930) 127 (875) 21 26 RC

CORROSION RESISTANCE:

H2SO4 HIC H3PO4 HNO3 ORGANIC ACIDS ALKALINES SEA WATER CHLORIDE CRACKING
G G G G G G G G

SPECIFICATION

SHEET/STRIP ASTM AMS BARS ASTM AMS
B424 B425
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