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ThyssenKrupp C-276, C-2000 and 686 Alloys
Steel name: ThyssenKrupp C-276, C-2000 and 686 Alloys
Diagram No.: 3811
Type of diagram: TTS
UNS designation: C-276: N10276, C-2000: N06200, 686: N06686.
Chemical composition in weight %:
Alloy C-276: 5% Fe, 57% Ni, 16% Cr, 16% Mo, 4% W, PRE:69.
Alloy C-2000: 1% Fe, 57% Ni, 23% Cr, 16% Mo, 1.6% Cu, PRE:74.
Alloy 686: 2% Fe, 57% Ni, 21% Cr, 16% Mo, 7% W, PRE:74.
PRE (Pitting Resistance Equivalent) = % Cr + 3.3(% Mo) + 30N
Steel group: Nickel alloys
Note: Time-Temperature-Sensitization (TTS) chart shows the pitting attack in ASTM G-28B solution on alloys C-276,
C-2000 and 686 after sensitization at 1600 °F (870 °C) to simulate multi-pass welding of thick sections. The pitting was worst in alloy
C-276, then C-2000 and alloy 686. Alloy 59 (UNS N06059) did not show any attack except on the stamped area using steel punches as
shown in the upper part of the corrosion test coupon.
Reference: Not shown in this demo version.
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Disclaimer: The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.