NC20T (2.4951 / NiCr20Ti) Alloy Datasheet

NC20T (2.4951 / NiCr20Ti) is a titanium-stabilized nickel-chromium heat-resistant alloy certified to AIR 9165 standards. It delivers stable creep resistance up to 800°C and exceptional oxidation and corrosion resistance up to 1100°C, making it a preferred material for gas turbine components, flame tubes, and heat treatment furnace hardware. As a trusted Chinese nickel alloy supplier with decades of experience, ZYTC Alloy supplies certified NC20T bars, forgings, and finished parts with full traceability and batch-to-batch consistency.

1. Product Specifications & Chemical Composition

NC20T alloy composition is precisely controlled per AIR 9165 specifications. The scientific ratio of nickel, chromium, and titanium ensures dual high-temperature performance—creep resistance and oxidation protection—while strict impurity control guarantees stable metallurgical quality.

 

2. Core Material Properties

2.1 High-Temperature Creep Resistance

Unlike conventional heat-resistant steels, NC20T maintains stable mechanical strength under long-term static and dynamic loads at temperatures up to 800°C. This creep resistance prevents permanent structural deformation, ensuring reliable performance in continuous high-temperature service.

2.2 Oxidation & Corrosion Resistance

Benefiting from its high chromium content and titanium grain stabilization, NC20T withstands extreme oxidizing environments up to 1100°C. A dense, adherent chromium oxide layer forms on the surface during high-temperature exposure, effectively isolating oxygen, flue gas, and corrosive media. Compared to standard stainless steels, NC20T offers significantly extended service life under thermal cycling conditions.

2.3 Physical Properties (Reference)

• Density: 8.2 g/cm³

• Thermal Conductivity (20°C): 12 – 13 W/m·K

• Melting Range: 1340 – 1380°C

• Structural Feature: Uniform grain structure with good high-temperature plasticity and processability

3. Professional Forging & Heat Treatment Process

The forging quality of NC20T components directly determines final high-temperature performance and service life. Based on AIR 9165 specifications, ZYTC Alloy adopts a standardized forging process:

• Optimal Forging Temperature Range: 950°C – 1150°C

• Post-Forging Treatment: Graded cooling followed by customized heat treatment to eliminate residual stress, refine metallographic structure, and maximize creep resistance and oxidation protection.

Nickel-based alloys are highly sensitive to processing temperatures. Non-standard forging practices can cause grain coarsening, reduced high-temperature strength, and performance instability. ZYTC Alloy’s mature forging technology and strict process management ensure reliable forged blanks and finished parts for high-end industrial applications.

4. Applications

NC20T is widely specified for core components in energy, power, and thermal processing industries:

• Gas Turbine Components: Static parts, combustion chamber accessories, high-temperature isolation components

• Flame Tubes & Combustion Systems: Industrial flame tubes, combustion nozzles, and continuous combustion hardware

• Heat Treatment Furnace Hardware: Radiant tubes, furnace linings, fixture supports, and high-temperature structural parts

• General High-Temperature Equipment: Components requiring reliable performance under repeated thermal cycling

5. Why Choose ZYTC Alloy for NC20T Materials?

ZYTC Alloy is a professional Chinese manufacturer and exporter of high-grade nickel-based and cobalt-based alloys, with extensive experience in AIR 9165-compliant NC20T production. The company integrates R&D, precision forging, standardized production, and global sales to provide one-stop alloy solutions. Supplier Advantages: ✅ Quality Control: Full-process monitoring from raw material selection to final inspection, ensuring batch-to-batch consistency ✅ Customized Service: Support for custom bar, rod, and forging specifications to meet diverse equipment needs ✅ Global Supply Capacity: Stable bulk supply with EN 10204 3.1/3.2 inspection certifications and reliable logistics ✅ Technical Support: Metallurgical guidance for material selection, processing, and application optimization

Contact ZYTC Alloy Today

📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350

For inquiries, technical datasheets, or a competitive quote, contact our sales team. We are ready to support your high-temperature project with certified NC20T (2.4951 / NiCr20Ti) materials.