GH1140 (GH140) Iron-Nickel Alloy Strip Heat-Resistant for Furnace Parts & Combustors

GH1140 (also known as GH140) is a high-performance iron-nickel based superalloy specifically developed for high-temperature industrial applications. This cost-effective, heat-resistant alloy strip delivers excellent oxidation resistance and structural stability at temperatures up to 950°C (1742°F), making it ideal for furnace components, combustors, and other thermal processing equipment.

As an economical alternative to nickel-based superalloys, GH1140 provides outstanding value for applications requiring durability in oxidizing and carburizing atmospheres without the premium cost of high-nickel content materials.

Key Properties of GH1140 Alloy Strip

GH1140 offers an optimal combination of properties for industrial heating applications:

✔ Superior Heat Resistance - Maintains strength up to 950°C (1742°F)

✔ Excellent Oxidation Resistance - Forms protective Cr₂O₃ scale at high temperatures

✔ Good Carburization Resistance - Performs well in hydrocarbon-rich environments

✔ Outstanding Thermal Fatigue Resistance - Withstands repeated heating/cooling cycles

✔ Excellent Formability & Weldability - Easier to fabricate than many nickel superalloys

✔ Cost-Effective - Lower price than comparable Ni-based alloys

Typical Composition (wt%):

Iron (Fe): ~45% (base)

Nickel (Ni): 35-40% (high-temperature strength)

Chromium (Cr): 20-23% (oxidation resistance)

Tungsten (W): 2.0-3.0% (solid solution strengthening)

Molybdenum (Mo): 1.5-2.5% (creep resistance)

Silicon (Si): ≤1.0% (oxide scale stability)

Carbon (C): ≤0.08%

Primary Applications of GH1140 Strip

1. Industrial Furnace Components

GH1140 is widely used for:

Radiant tubes in heat treatment furnaces

Roller hearths in continuous annealing lines

Furnace muffles and retorts

Heat exchanger tubes in recovery systems

Performance Advantages:

Resists sagging and distortion at operating temperatures

Maintains dimensional stability during thermal cycling

Provides long service life in oxidizing atmospheres

2. Combustion System Parts

Combustor liners in industrial burners

Flame shields and burner nozzles

Thermal reactor components

3. Petrochemical Processing Equipment

Reformer tubes in hydrogen plants

Catalyst support grids

Pyrolysis furnace parts

4. Power Generation Components

Boiler baffles and heat shields

Gas turbine combustor parts

Why Industrial Manufacturers Choose GH1140 Strip

✔ Cost-Effective High-Temperature Performance

Provides 85-90% of the performance of nickel-based alloys like Inconel 601 at 60-70% of the cost

✔ Excellent Fabrication Characteristics

Easier to weld, form, and machine than many high-nickel superalloys

✔ Proven Reliability in Harsh Environments

Trusted for decades in Chinese industrial applications (equivalent to Western grades like RA330)

✔ Optimized for Industrial Atmospheres

Specifically designed to resist:

Oxidizing conditions (air, CO₂, H₂O vapor)

Carburizing environments (hydrocarbon gases)

Sulfur-containing atmospheres

✔ Readily Available in China

Domestic production ensures stable supply and competitive pricing

Material Specifications & Availability

Available Forms:

Cold-rolled strips (0.5-6.0mm thickness)

Hot-rolled plates (6-50mm thickness)

Seamless tubes and pipes

Custom fabricated components

Common Standards:

GB/T 14992 (Chinese standard)

Similar to: RA330, Incoloy 800H (Western equivalents)

Typical Mechanical Properties:

Tensile Strength: ≥590 MPa at room temperature

Yield Strength: ≥295 MPa at room temperature

Elongation: ≥30%

Heat Treatment:

Solution annealing: 1100-1150°C followed by rapid cooling

FAQ:

What is the brand name of the High Temperature Alloy product?

Answer: The brand name of the product is DLX

What is the model number of the high temperature alloy product?

Answer: The model number of the product is High Temperature Alloy.

Where is the product made?

Answer: The product is made in China JiangSu.

What is the minimum order quantity for the product?

Answer: The minimum order quantity for the product is

What is the expected delivery time for the product?

Answer: The expected delivery time for the product is 5-7 days.