Haynes 188 Cobalt Based Alloy

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Cobalt-nickel-chromium-tungsten alloy

Haynes 188 Cobalt Based Alloy

Physical and Mechanical Properties

Density

9.09g/cm³

Melting point

1300-1360°C

Tensile strength

860MPa

Yield strength

380MPa

Elongation

45%

Product Form and Standard Specification

Bar

AMS 5772

Plate

AMS 5608

Wire

AMS 5801

Forging

AMS 5772

Haynes 188 (GH5188) is a Co-Ni-Cr based solid solution strengthened deformation superalloy, designed for high-temperature environments up to 1100℃. Its excellent high-temperature performance and weldability make it widely used in high-temperature components within the aerospace and energy industries. GH5188 not only boasts strong mechanical properties but also performs exceptionally well in high-temperature and corrosive environments, maintaining superior operational performance under harsh conditions.

Features

Excellent high-temperature strength: Maintains mechanical integrity and stability under extreme heat, making it ideal for turbine components and engine systems.
Outstanding oxidation and corrosion resistance: Performs reliably in oxidizing atmospheres and chemically corrosive media, ensuring long-term durability.
Superior wear resistance: High durability under friction and wear reduces maintenance frequency and extends equipment service life.

Application

Aerospace: Used in high-temperature engine components such as turbine blades and combustion chambers, ensuring reliable aircraft performance.
Energy sector: Plays a key role in gas turbines and steam turbines, contributing to improved energy conversion efficiency.
Industrial manufacturing: Applied in mold and tool manufacturing, where its wear resistance enhances the lifespan and productivity of precision equipment.

Chemical compositions

Element	Min. %	Max. %
Ni	20	24
Cr	20	24
Fe	-	3
W	13	16
Cu	-	0.07
Co	Bal
C	0.05	0.15
Mn	-	1.25
Si	0.2	0.5
S	-	0.15
P	-	0.02

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