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4140 4330 Mod4340 / E-43404620 Vac. / AMS 62946150 Vac. / AMS 6448AISI 9310300mMARAGING 350MARAGING 300MARAGING 250

Alloy 188 / 2.4683

Standards

Mat. No.
2.4683
EU
CoCr22NiW
AISI/ASTM
-
UNS
R30188
Other
Conicro 4023 W
Alloy 188
2.4683 / Alloy 188 Nickel is a cobalt-based high temperature resistant alloy containing chromium.
1150 °It exhibits excellent mechanical properties up to C. Even after exposure to high temperatures, it maintains excellent stability and ductility, and it shows very good resistance to sulfidation. It combines producibility and weldability.

Chemical Composition & Mechanical and Physical Properties

C%
0.05-0.15
Mn%
1.25 max
P%
0.020 max
S%
0.015 max
Si%
0.20-0.50
Cr%
20.00-24.00
Ni %
20.00-24.00
Mo %
8.00-10.00
Co %
Rest
Fe %
3.00 max
W %
13.00-16.00
La %
0.02-0.12
0.2% Yield Strength Rp N/mm2
380 min
Tensile Strength Rm N/mm2
860 min
Elongation A5 %
40 min
Elastic Modulus kN/mm2
222
Tensile Strength (1000 hours)
704 °C
240 MPa
871 °C
69 MPa
927 °C
41 MPa
1038 °C
15 MPa
1093 °C
9 MPa

Application areas

Gas turbine combustion chambers, flame arresters and lines, heat exchangers, furnace parts.

Specifications

AMS 5608 Sheet, Strip and Plate
AMS 5772 Bars, Forgings and Rings
AMS 5801 Welding Wire
UNS R30188, GE B50A712, GE B50TF59, GE B50TF74
Trade Names: Haynes 188, UDIMET 188
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