Haynes 188 Bars and Rods

George Metals, based in Houston, USA, stands out as a leading manufacturer and supplier of Haynes 188 Bars and Rods, designed to excel in extreme high-temperature settings. Haynes 188 is a cobalt-based superalloy celebrated for its remarkable oxidation resistance, thermal stability, and impressive creep strength, even at temperatures soaring up to 1095°C (2000°F). George Metals offers these bars and rods in a variety of sizes and conditions, all crafted to meet rigorous quality standards like AMS 5608 and UNS R30188. These products find extensive use in aerospace, gas turbine engines, industrial heating, and nuclear applications, where resistance to heat, stress, and corrosion is crucial.

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Haynes 188 Round Bars

Haynes Alloy 188 Square Bars

Haynes 188 Hex Bars

What is Haynes 188 Bars and Rods?

Haynes 188 Bars and Rods from George Metals are composed of about 39% cobalt, 22% nickel, 22% chromium, and 14% tungsten, with small amounts of lanthanum added to boost high-temperature oxidation resistance. This alloy is known for its exceptional creep strength, thermal fatigue resistance, and oxidation resistance up to 1095°C. The mechanical properties include a tensile strength of around 850 MPa, yield strength of about 450 MPa, and impressive elongation and ductility at high temperatures. Typically, Haynes 188 is solution-annealed and air-cooled, ensuring consistent structural integrity and durability for challenging thermal service environments.

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Haynes 188 Bars and Rods Specification

Standards :	ASTM 5772, ASME S5772
Dimensions :	EN, DIN, JIS, ASTM, BS, ASME, AISI
Wire :	Thickness starting from 0.05mm
Round bar size :	Diameter: 3-~800mm
Hex Bar size :	2-100mm A/F
Flat bar size :	Thickness: 2 -100mm / Width: 10 to 500mm
Square bar size :	4 to 100mm
Rectangular Bars Size :	33 x 30mm to 295 x 1066mm
Hollow Bar :	32mm OD x 16mm ID to 250mm OD x 200mm ID
Tolerance :	H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Finish :	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish

Chemical Compositions of Haynes 188 Bars and Rods

Grade	C	Mn	P	S	Si	Ni	Cr	Fe	W	B	La
Haynes 188	.05 – .15	1.25 max	.020 max	.015 max	.20 – .50	20.0 – 24.0	21.0 -23.0	3.0 max	13.0 -15.0	.015 max	.03 – .15

Haynes 188 Bars and Rods Mechanical Properties

Tensile Strength	Yield Strength (0.2%Offset)	Elongation
ksi – 65 , MPa – 446	ksi – 140 , MPa – 963	55 %

Haynes 188 Bars and Rods Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS
Haynes 188	2.4683	R30188

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Haynes 188 Bars and Rods Types

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Haynes 188 Bars and Rods Uses

Haynes 188 bars and rods are high-performance alloys that are traditionally used in applications demanding excellent strength along with resistance to high-temperature oxidation and corrosion. They are often used in aerospace and industrial gas turbine components, which find very high-performance applications, such as in engine parts, combustion chambers, and turbine blades. They also have applications in heat exchangers, power generation, and chemical processing, where their resistance to thermal cycling and aggressive chemicals is critical. Haynes 188’s superior weldability and strength at elevated temperatures make it suitable for both high-temperature structural and pressure-containing components in demanding industries.

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