Nickel-chromium Alloys Bar Cr30Ni70

Overview

Cr30Ni70 Nickel-Chromium Alloy Bar is a high-chromium (30%) nickel-based alloy engineered for extreme temperatures (up to 1300°C) and aggressive corrosive environments. With outstanding oxidation, sulfidation, and carburization resistance, it is the top choice for chemical cracking furnaces, oil refining equipment, nuclear power high-temperature components, and aerospace engines, offering both longevity and cost-effectiveness.

Limiting Chemical Composition, %

Chromium(Cr)..................................................................................................................................30.0

Aluminum(Ni)..................................................................................................................................70.0

Balance Iron (Fe) & Trace Elements

Main Properties

Material Characteristics

Material Properties

● Superior High-Temperature Oxidation Resistance:

Forms a dense Cr₂O₃-Al₂O₃ composite layer at 1300°C, extending lifespan by 50%.

● Sulfidation & Carburization Resistance:

Resists sulfur-, chlorine-, and carbon-rich media in refining and chemical processes.

● Cryogenic to High-Temperature Toughness:

Stable mechanical properties from -200°C to 1300°C.

Core Advantages

● Extreme Environment Adaptability:

Resists oxidation, reduction, sulfidation, and carburization.

● Cost Efficiency:

Reduces component replacement frequency, cutting maintenance costs by 40%.

● Weldable & Formable:

Compatible with TIG welding, hot forging, and cold rolling for complex geometries.

Typical Applications

● Petrochemical:

Cracking furnace tubes, hydrogenation reactor internals, sulfur recovery units.

● Nuclear Power:

Reactor control rod conduits, steam generator support rings.

● Aerospace:

Rocket engine nozzle liners, hypersonic vehicle thermal shields.

Technical Parameters