SE-P31 (NO7031)

SECORP designation (UNS NO.)

A precipitation-hardenable nickel alloy exhibiting resistance to hot sulfidation attack and to other corrosive environments.

Major Applications

 

Diesel exhaust valves. Hardware for deep corrosive gas and oil wells.

NOMINAL CHEMICAL COMPOSITION (%):

Cr Ni Fe Mo Cu C Others
22.7 Bal 14.4 2.0 - 0.04 Ti-2.5
Al-1.5
Cb-1.1

TYPICAL MECHANICAL PROPERTIES:

METALLURGICAL CONDITION TENSILE STRENGTH Ksi (MPa) YIELD STRENGTH 2% OFFSET Ksi (MPa) ELONGATION (%) HARDNESS
SOL. TRT. AGED 70 (480) 25 (170) 45 100 RB

CORROSION RESISTANCE:

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

SPECIFICATION

SHEET/STRIP ASTM AMS BARS ASTM AMS
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