(AISI No. 688)
(UNS N07750)
Single Figures are Maximums
0.08 C, 0.30 Mn, 0.50 Si, 0.010 S, 14.0/17.0 Cr, 70.00 Ni and Co, 2.25/2.70
Ti, 0.40/1.00 Al, 0.70/1.20 Cb and Ta, 0.05 Cu, 5.0/9.0 Fe
Precipitation-hardening alloy, highly resistant to chemical
corrosion
and oxidation. Has been used as high-temperature structural members for jet
engine parts, heat-treating fixtures, forming tools.
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