Nickel-chromium Alloys Bar Cr20Ni35

Overview

Cr20Ni35 Nickel-Chromium Alloy Bar is a high-nickel alloy engineered for extreme oxidation, carburization, and sulfidation environments. With exceptional high-temperature strength (up to 1200°C), superior creep resistance, and excellent machinability, it is the ideal material for petrochemical pyrolysis furnaces, nuclear power equipment, semiconductor high-temperature furnaces, and aerospace engine components.

Limiting Chemical Composition, %

Chromium(Cr)..................................................................................................................................20.0

Aluminum(Ni)..................................................................................................................................35.0

Balance Iron (Fe) & Trace Elements

Main Properties

Material Characteristics

Material Properties

● Ultra-High Temperature Stability:

Forms a continuous Cr₂O₃ protective layer for oxidation resistance up to 1200°C.

● Carburization & Sulfidation Resistance:

Resists carbon- and sulfur-rich gas attacks, extending equipment lifespan.

● Cryogenic to High-Temperature Toughness:

Maintains ductility from -196°C to 1200°C.

Core Advantages

● Extreme Environment Adaptability:

Suitable for oxidation, reduction, carburization, and mixed conditions.

● Long-Term Cost Efficiency:

Reduces high-temperature component replacement frequency, cutting overall costs by 30%.

● Precision Machining Compatibility:

Supports CNC turning, welding, and cold rolling for complex parts.

Typical Applications

● Petrochemical Pyrolysis Furnaces:

Radiant tubes, cracking tubes, quench boiler parts.

● Nuclear Power Equipment:

Reactor pressure vessel linings, steam generator tube sheets.

● Semiconductor Manufacturing:

CVD reactor supports, wafer heating trays.

Technical Specifications