SE-400 (NO4400)

SECORP designation (UNS NO.)

Nickel-copper solid solution, moderate strength. Good general corrosion resistance, especially to deaerated hydrochloric and hydrofluoric acids. Resists corrosion by sea-water.

Major Applications

 

Marine fixtures, shafting, valves, pumps, fasteners. Salt evaporators, piping. HF reboilers; chlorinated solvent. Acid pickling hardware.

NOMINAL CHEMICAL COMPOSITION (%):

Cr Ni Fe Mo Cu C Others
- 66.5 1.2 - Bal 0.08 Mn-1.0

TYPICAL MECHANICAL PROPERTIES:

METALLURGICAL CONDITION TENSILE STRENGTH Ksi (MPa) YIELD STRENGTH 2% OFFSET Ksi (MPa) ELONGATION (%) HARDNESS
ANNEALED 80 (550) 35 (240) 45 70 RB
COLD DRAWN STRESS RELIEVED 100 (690) 70 (480) 30 90 RB

CORROSION RESISTANCE:

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

SPECIFICATION

SHEET/STRIP ASTM AMS BARS ASTM AMS
B127 B164
4544 -