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GH2747 Description

GH2747 (also known as GH747) is a nickel-based high-temperature alloy independently developed in China. It belongs to the Ni-Fe-Cr-Al series of solution-strengthened alloys, exhibiting excellent high-temperature oxidation resistance, creep resistance, and thermal stability. It is particularly suitable for long-term high-temperature service environments between 900–1150°C.

As a domestically developed superalloy in China, GH2747 offers a reliable and cost-effective solution for high-temperature applications, serving as an excellent alternative to imported materials like Inconel 601.
Key Performance Characteristics
‌High-Temperature Resistance‌: Long-term operating temperature range of 1100–1250°C, with short-term tolerance up to 1300°C, maintaining high strength even at elevated temperatures.
Mechanical and Chemical Stability: Exhibits high toughness, creep resistance, and outstanding thermal corrosion resistance, particularly in oxidizing and corrosive gas environments.
Processing Characteristics: Primarily used in the solution-treated state. Possesses excellent weldability, facilitating fabrication of complex components. However, heat treatment processes must be strictly controlled to prevent performance degradation.

Chemical Composition %

% C Cr Ni Mo Cu P Mn Fe S W Co Ti
min 15 44
max 0.1 17 46 0.02 0.5 Bal 0.015

Mechanical & Physical Properties

0.2% Yield Strength Tensile Strength Elongation Modulus of Elasticity Density Melting Range
MPa MPa % GPa g/cm³ °C
350 750 30 205 8.1 1320–1390
  • COMMON TRADE NAMES
  • Inconel 747
  • NCF 747
  • NiCr25FeAl
  • Inconel 601

Specification

  • GB/T 14992-2005
  • GB/T 14994-2008
  • GB/T 14995-2008
  • GB/T 14997-2008
  • GB/T 14998-2008
  • YB/T 5249-2012

APPLICATION

  • Combustion chambers, exhaust nozzles, turbine shrouds, afterburner components
  • Gas turbine parts, superheater tubes in ultra-supercritical boilers, nuclear heat exchangers
  • Ethylene pyrolysis furnace tubes, reformer internals, gasifier components
  • Radiant tubes, muffle furnaces, fixtures, conveyor chains, thermocouple sheaths
  • Liners, superheater tubes, flue gas ducts in municipal and hazardous waste plants
  • Turbocharger housings, high-performance exhaust systems, hydrogen engine components
  • CVD/PVD chamber parts, high-temperature test fixtures

Welding consumables

  • GH2747 Welding Rod
  • GH747 Welding Rod
  • ERNiCr-3 Nickel-Based Welding Wire
  • GH2747 Welding Wire

What Can We Offering

Available Product Range (in mm)

  • Hot-Rolled Steel Plates
  • Thickness: Ranging from 3mm to 120mm
  • Width: 600mm-2500mmStandard Width: 1000, 1219, 1500, and 2000mm
  • Length:1000mm-25000mm
  • Cut to Length: 2000 2440, 3000, 3048 and 6000mm
  • Surface Types: Includes NO.1, NO.4, 8K, Brush, and Checkered
  • Cold-Rolled Steel Sheet/Plate
  • Thickness: Ranging from 0.2mm to 4mm
  • Width: 600mm-2000mm
  • Standard Width: 1000, 1219, 1500, and 2000mm
  • Length:1000mm-6000mm
  • Cut to Length: 2000 2440, 3000, 3048 and 6000mm
  • Form: Sheet Or Coil

Available Round Bar Dimensions (in mm)

  • Diameter
  • General Range: 3mm to 800mm
  • Common Range: 25mm to 152mm
  • Specialized: Up to 300mm or more for certain applications
  • Length
  • Standard: 1 to 6 meters
  • Custom: Available in custom cut lengths
  • Other dimensions
  • Forms: Available in various forms including round, square, hex, flat, billet, and ingot
  • Finishes: Common finishes include bright, polished, and black
  • Tolerance:±0.05 mm (cold-drawn), ±0.4 mm (hot-rolled)

Type Of Flangs (Size/Dimensions)

  • Welding Neck, Reducer Flange,Socket Weld Flange
  • Dimensions:½” – 48″（DN15-DN1200）
  • Pressure Class:150# 300# 600#900#1500#
  • Facing Type:RF,FF,RTJ
  • Slip-On Flange,Lap Joint Flange,Threaded Flange
  • Dimensions:½” NB – 24″ NB（DN15 – DN600）
  • Pressure Class: Class 150 to 2500
  • Face: Raised face (RF), Ring type joint (RTJ)
  • Blind Flange
  • Dimensions:½” – 60″（DN15-DN1500）
  • Pressure Class:150# 300# 600#900#1500#

Types of Steel Pipes & Tubes

  •  Seamless Pipe
  • OD Φ6 – Φ630 mm, WT 0.5 – 80 mm
  • Welded Pipe
  • OD Φ15 – Φ3000 mm (up to 3m for spiral)
  • Precision Tube
  • OD Φ4 – Φ100 mm, WT tolerance ±0.05mm
  • Capillary Tube
  • OD 0.5 – 6 mm, WT down to 0.1mm
  • Coiled Tube
  • Up to 100–1000m long, for OD < Φ25mm

Types of Fittings

  • Elbow:Butt-Weld┃Socket Weld ┃Threaded
  • 90°, 45°, and 180°. Available in Long Radius (LR) and Short Radius (SR) types.
  • Nominal Diameter (DN): DN6 – DN1200 (NPS ¼” – 48″)
  • Schedule : SCH 5, 10, 20, 30, 40, 80, 160, XXS
  • Custom angles (e.g., 30°, 60°), U-bend heat exchanger tubes
  • Tee:Equal┃Reducing┃Butt-Weld┃Socket Weld┃Threaded
  • Nominal Diameter (DN): DN6 – DN1200 (NPS ¼” – 48″)
  • Schedule : SCH 5, 10, 20, 30, 40, 80, 160, XXS<
  • Cap:Butt-Weld┃Threaded┃Socket Weld
  • Nominal Diameter (DN): DN6 – DN1200 (NPS ¼” – 48″)
  • Schedule : SCH 5, 10, 20, 30, 40, 80, 160, XXS
  • Custom non-standard sizes, small batch orders
  • Weldolet,Sockolet,Threadolet,Latrolet,Nipolet,Lapolet
  • Run Pipe: DN25 – DN1200 (NPS 1″ – 48″)
  • Outlet Branch: DN6 – DN200 (NPS ¼” – 8″)
  • Schedule: SCH 40, 80, 160, XXS (matched to run pipe)

Overall Supply Range of Metal Strip & Foil

Strip & Foil
  • Thickness(Thin Strip):0.02 mm – 0.5 mm
  • Thickness(Foil):≤ 0.02 mm（20 μm）
  • Narrow width: 5–50 mm (for electronic leads)
  • Wide width: 50–600 mm (for general coil applications)
  • Coil Length:Continuous rolls, each roll 10–3000 meters
  • Roll weight: 1–500 kg (depending on material density)
  • Finishes:Bright,Matte,Embossed,Coated