- Excellent high temperature strength and creep resistance
- Superior oxidation resistance at elevated temperatures
- High mechanical strength after heat treatment
- Good fatigue resistance under cyclic loading
- Stable performance in long-term high temperature service
- Excellent resistance to scaling and thermal degradation
- Ideal aerospace grade high temperature alloy bar
GH2123 / 660 / 1.4980 High Temperature Alloy Round Bar
GH2123, also known as Alloy 660 (UNS S66286) / 1.4980 stainless steel, is a high-strength austenitic precipitation hardening superalloy designed for extreme high-temperature applications.
It offers excellent creep resistance, oxidation resistance, and long-term mechanical stability, making it a widely used high temperature alloy round bar for aerospace, power generation, and industrial heat-resistant systems.
GH2123 / Alloy 660 is especially suitable for applications requiring high strength at elevated temperatures above standard stainless steels such as 304 and 316.
Key Features of GH2123 / Alloy 660 Round Bar
- Excellent high temperature strength and creep resistance
- Superior oxidation resistance at elevated temperatures
- High mechanical strength after heat treatment
- Good fatigue resistance under cyclic loading
- Stable performance in long-term high temperature service
- Excellent resistance to scaling and thermal degradation
- Ideal aerospace grade high temperature alloy bar
Chemical Composition (UNS S66286 / Alloy 660 / 1.4980)
- Nickel (Ni): 24.0 – 27.0%
- Chromium (Cr): 13.5 – 16.0%
- Iron (Fe): Balance
- Molybdenum (Mo): 1.0 – 1.5%
- Titanium (Ti): 1.9 – 2.35%
- Vanadium (V): 0.1 – 0.5%
- Carbon (C): ≤ 0.08%
- Boron (B): ≤ 0.006%
This composition provides excellent nickel based high temperature alloy performance.
Mechanical Properties (Heat Treated Condition)
- Tensile Strength: 900 – 1200 MPa
- Yield Strength: ≥ 550 MPa
- Excellent creep rupture strength
- High fatigue resistance
- Stable performance under thermal stress
- Good structural integrity at elevated temperatures
Product Specifications
We supply premium GH2123 / Alloy 660 round bar stock for industrial and aerospace use:
- Diameter: 5mm – 300mm (custom sizes available)
- Length: 1000mm / 3000mm / 6000mm / custom cut
- Surface Finish: Black, Peeled, Turned, Polished
- Standards: ASTM A453, ASTM A638, UNS S66286, EN 1.4980
- Condition: Solution treated / Aged / Heat treated
Applications of GH2123 / Alloy 660 Round Bar
GH2123 high temperature alloy is widely used in critical engineering fields:
- Aerospace engine components
- Gas turbine and jet engine parts
- Power generation systems
- High temperature fasteners and bolts
- Petrochemical processing equipment
- Industrial furnace components
- Heat-resistant structural parts
- Nuclear and energy engineering systems
It is a key high temperature alloy round bar for turbine and aerospace applications.
Advantages of GH2123 / Alloy 660
Compared with conventional stainless steels, GH2123 / Alloy 660 offers:
- Much higher high-temperature strength
- Excellent creep and stress rupture resistance
- Superior oxidation resistance
- Long service life under extreme conditions
- Stable microstructure at elevated temperatures
- Reliable performance in aerospace environments
It is widely used as a premium heat resistant alloy bar for high-performance engineering applications.
FAQ – GH2123 / Alloy 660 / 1.4980 Round Bar
1. What is GH2123 / Alloy 660?
GH2123 (Alloy 660 / UNS S66286 / 1.4980) is a nickel-iron-chromium precipitation hardening superalloy designed for high temperature strength and creep resistance.
2. What is GH2123 used for?
It is used in aerospace engines, gas turbines, power plants, fasteners, and high-temperature industrial components.
3. Is Alloy 660 the same as 1.4980?
Yes, Alloy 660 corresponds to EN material grade 1.4980 and UNS S66286.
4. What makes GH2123 suitable for high temperature use?
Its nickel-based composition and precipitation hardening structure provide excellent creep resistance and thermal stability.
5. Can GH2123 be used in aerospace applications?
Yes, GH2123 / Alloy 660 is widely used in aerospace turbine and engine components due to its high strength at elevated temperatures.
6. Is GH2123 corrosion resistant?
It has good oxidation resistance at high temperatures, but it is mainly designed for strength and heat resistance rather than extreme corrosive environments.
7. What sizes are available?
We supply GH2123 / Alloy 660 round bar in diameters from 5mm to 300mm with custom cutting and machining services.
Hengyi Metal offers high-quality nickel alloy products with competitive pricing and fast delivery
Contact us now for a quotation
Email: sales@hengyimetal.com
WhatsApp: +86 19521258704
Related Products:
Hastelloy C276
Incoloy 825
Inconel 625
Related Articles
