INCOLOY 825 N08825 SEAMLESS TUBE ASTM B163 B423 NICKEL ALLOY TUBE

INCOLOY 825 N08825 SEAMLESS TUBE ASTM B163 B423 NICKEL ALLOY TUBE

What is Incoloy 825 Tube?

Incoloy 825(UNS N08825) is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. It is specifically designed to provide exceptional resistance to a wide range of corrosive environments, while also maintaining good mechanical strength.

What is it used for?

Due to its outstanding corrosion resistance, Incoloy 825 tubing is widely used in several demanding industrial applications:

The key advantages of Incoloy 825 tubes come from its carefully balanced chemical composition:

1. Comprehensive Corrosion Resistance

• Resists both reducing and oxidizing acids– Performs exceptionally well in sulfuric acid, phosphoric acid, and nitric acid environments.
• Resists stress corrosion cracking (SCC)– The high nickel content provides excellent resistance to chloride-induced SCC, a common failure mode in many stainless steels.
• Resists pitting and crevice corrosion– Molybdenum and copper additions enhance resistance to localized corrosion in chloride-containing environments.
• Resists intergranular corrosion– The addition of titanium acts as a stabilizer, preventing intergranular attack after welding or heat treatment.

2. Good Mechanical Properties

• Maintains good tensile and yield strength from cryogenic temperatures up to approximately 550°C (1020°F).

3. Excellent Fabricability

• Easy to form by both hot and cold working processes.
• Readily weldable using standard techniques (e.g., TIG, MIG, SMAW), with no post-weld heat treatment typically required.

Key Performance Data (Annealed Condition)