Products
Eaton Alloys PTE LTD. was established in 2011 (as Eaton Alloys Limited) and has grown consistently over this time to become a specialized supplier for specialty metals widely used in oil a
Products
Singapore
Add.: 139 Bedok North Avenue 3, #10-188, Singapore 460139
Tel: 0065 9664 4411
Email：tonytay@eatonalloys.com
Web：www.eatonalloys.com
China
Add.: 489# Guanghua Dong 3rd Road, Chengdu, China, 610091
Tel: 0086 28 81703462
Email: sales@eatonalloys.com
Web: www.eatonalloys.com
Alloy 188
Alloy 188
Alloy 188 (also known as Haynes 188 and Udimet alloy 188) is a cobalt based nickel-chromium-tungsten alloy with a small addition of lanthanum to give a very protective scale. Alloy 188 combines excellent high-temperature strength with good resistance to both oxidizing environments up to 2000°F and to sulfate deposit hot corrosion. Alloy 188 has good forming characteristics and is capable of being forged, hot worked or cold worked, althoug it does work-harden very rapidly so frequent intermediate annealing treatments are recommend for complex forming operations. Alloy 188 is supplied solution heat treated at 2150°F and rapid air or water quenched to attain optimum properties. A combination of good fabricability and weldability makes Alloy 188 suitable for a wide number of applications, particularly in gas turbine components such as combustors, flame holders, liners and tranistion ducts.
Nominal Composition %
Co 39.0
Ni 22.0
Cr 22.0
W 14.0
Fe 3.0 max
Mn 1.25 max
Si 0.35
C 0.1
La 0.03
B 0.015max
Mechanical Properties
| Allo 188 extruded bar/AMS5772 | solution annealed |
| Test Temperature | Room Temperature |
| Yield Strength | 55 ksi |
| Tensile Strength | 125 ksi |
| Elongation | 45% |
| Hardness | 302 HB max |
Specifications
AMS5772
UNS R30188