INCONEL 601GC® Nickel Superalloy，1

### **Product Introduction: INCONEL® 601GC® Nickel Superalloy** **INCONEL® 601GC®** is a nickel-chromium-iron alloy specifically designed with controlled grain size for enhanced creep rupture strength and improved high-temperature performance. The "GC" designation refers to the "Grain Controlled" microstructure, which provides superior mechanical properties and extended service life in high-temperature applications. This alloy combines excellent oxidation resistance with high strength, making it particularly suitable for critical components in thermal processing and power generation industries. The optimized grain structure allows for better stress rupture properties and improved resistance to thermal fatigue, while maintaining the excellent corrosion resistance characteristic of the INCONEL 601 series. --- ### **Chemical Composition** | Element | Content (%) | |---------|-------------| | **Nickel (Ni)** | 58.0 - 63.0 | | **Chromium (Cr)** | 21.0 - 25.0 | | **Iron (Fe)** | Balance | | **Aluminum (Al)** | 1.0 - 1.7 | | **Carbon (C)** | 0.10 max | | **Manganese (Mn)** | 1.0 max | | **Copper (Cu)** | 1.0 max | | **Silicon (Si)** | 0.5 max | | **Sulfur (S)** | 0.015 max | --- ### **Physical Properties** | Property | Value | |----------|-------| | **Density** | 8.11 g/cm³ | | **Melting Point** | 1360-1410 °C | | **Thermal Conductivity** | 11.2 W/m·K (at 20°C) | | **Electrical Resistivity** | 1.18 μΩ·m | | **Modulus of Elasticity** | 200 GPa | | **Coefficient of Thermal Expansion** | 13.9 μm/m·°C (20-300°C) | | **Specific Heat Capacity** | 460 J/kg·K | | **Magnetic Permeability** | <1.01 | --- ### **Mechanical Properties** **Room Temperature Properties (Annealed):** - **Tensile Strength:** 710 MPa - **Yield Strength (0.2% Offset):** 320 MPa - **Elongation:** 45% - **Hardness:** 85 HRB **Elevated Temperature Performance:** - **Creep Rupture Strength (1000°C/1000h):** 25 MPa - **Maximum Service Temperature:** 1250°C - **Excellent thermal fatigue resistance** - **Superior stress rupture life** --- ### **Key Characteristics & Advantages** 1. **Enhanced High-Temperature Performance** - Controlled grain structure for improved creep strength - Superior stress rupture properties - Excellent thermal fatigue resistance 2. **Exceptional Oxidation Resistance** - Outstanding resistance to scaling up to 1250°C - Stable protective oxide layer formation - Good resistance to carburization and sulfidation 3. **Optimized Microstructure** - Controlled grain size distribution - Improved mechanical properties - Enhanced long-term stability 4. **Excellent Fabricability** - Good weldability using conventional methods - Suitable for hot and cold working - Maintains properties in fabricated condition --- ### **Product Applications** **Thermal Processing Industry:** - Radiant tubes and retorts - Furnace muffles and rollers - Heat treatment fixtures - Annealing covers and baskets **Power Generation:** - Heat exchanger components - Combustion system parts - Gas turbine components - Boiler parts **Chemical Processing:** - Reformer tubes - Catalyst support grids - High-temperature reactors - Ethylene furnace components **Aerospace Industry:** - Combustion chamber parts - Afterburner components - Exhaust system parts - Turbine components --- ### **International Standards** | Standard Type | Standard Number | Product Form | |---------------|-----------------|--------------| | **ASTM** | B168 | Plate, Sheet, and Strip | | **ASTM** | B166 | Rod and Bar | | **ASME** | SB-168, SB-166 | Code Cases | | **DIN** | 2.4851 | Material Number | | **EN** | NiCr23Fe | European Standard | | **AMS** | 5717 | Seamless Tube | --- ### **Summary** **INCONEL® 601GC®** represents an advanced evolution of nickel-chromium superalloy technology, featuring controlled grain structure for enhanced high-temperature performance. The specialized grain control process provides superior creep rupture strength and extended service life compared to conventional alloys, while maintaining excellent oxidation resistance and mechanical properties at temperatures up to 1250°C. This alloy is particularly valuable for critical components in thermal processing, power generation, and chemical processing industries where reliability and long-term performance are essential. Certification to major international standards including ASTM, ASME, and DIN specifications ensures consistent quality and performance, providing engineers with a premium material solution for the most demanding high-temperature applications where enhanced creep resistance and microstructural stability are paramount requirements.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3329 gallon liquid totes Special package is available on request.