Alloy 188_Solid-solution Strengthened Cobalt Base_Superalloy_Product_Liuhe Special Materials

Superalloy-Alloy 188

Superalloy Grade： Alloy 188、 R30188；GH5188

Industrial Application
Rotating parts and fasteners for aero engines and gas turbines.

Common Delivery Condition

Main Specifications

Forming Method	Type	Nominal Diameter (mm)	Nominal Length (mm)
Forging/rolling	Bars	d20mm~400mm
Rolling	flat bars	Thickness: 40mm-140mm × Width: 40-140mm

Delivery Condition

Bars undergone the heat treatment or solid-solution, supplied after polishing or turning; flat bars shall undergo the solid-solution and aging heat treatment, and supplied after turning.

Chemical Composition

Mechanical Properties

Impact Toughness

Standard No.	Grade	Impact KV2
DB MS 4705Y R03	Quenched-and-tempered flat bars	≥20

Tensile Properties

			Room Temperature Tensile				High Temperature Tensile
Standard	Heat Treatment Procedure	Spec. (mm)	Yield Strength	Tensile Strength	Elongation	Reduction of Area	Temperature	Yield Strength	Elongation	Reduction of Area
GJB1952A	1050-1090)°C/A °C	220	≥735		≥40	-	800	245	≥40	-

Endurance Properties

Test Temperature (℃)	Stress (MPa)	Duration (h)	Elongation	Reduction of Area
650	245	≥100	≥9	≥40

Industrial Application

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