Nitronic 60 (Alloy 218) / UNS S21800 / 1.3971 (Modified) / X2CrNiMnMoN17-8-8

Alloy Nitronic 60 / Alloy 218: Properties, Applications, and Features

✅ General Technical Characteristics

Nitronic 60 (Alloy 218) is a high-strength austenitic stainless steel alloy with excellent resistance to wear, abrasion, and cavitation corrosion. It contains an increased amount of silicon and manganese, significantly improving anti-friction properties and preventing galling under high loads.

Main Characteristics:

• High resistance to wear and galling.
• Excellent corrosion resistance in aggressive environments.
• High mechanical strength at elevated temperatures.
• Good weldability and machinability.
• Heat resistance and oxidation resistance.

🔬 Chemical Composition of Nitronic 60 / Alloy 218 (%)

• Carbon (C): ≤ 0.10
• Silicon (Si): 3.5 – 4.5
• Manganese (Mn): 7.0 – 9.0
• Phosphorus (P): ≤ 0.04
• Sulfur (S): ≤ 0.03
• Chromium (Cr): 16.0 – 18.0
• Nickel (Ni): 8.0 – 9.0
• Nitrogen (N): 0.08 – 0.18
• Molybdenum (Mo): ≤ 0.75

💡 Nitronic 60 alloy stands out for its exceptional wear resistance due to its high silicon and manganese content.

🏭 Applications

Thanks to its unique properties, Nitronic 60 (Alloy 218) is widely used in industries requiring high wear and corrosion resistance.

Main Application Areas:

• Aerospace and aviation industry.
• Manufacturing of valves, bearings, pins, and fasteners.
• Chemical and petrochemical industry (reactors, pipelines, pumps).
• Power generation (heat exchangers, turbine components, boiler equipment).
• Shipbuilding and marine industry.
• Production of medical equipment and instruments.

📊 Mechanical Properties

• Tensile Strength (Rm): 690 – 850 MPa
• Yield Strength (Rp0.2): ≥ 380 MPa
• Hardness (HB): 200 – 240 HB
• Elongation (A5): ≥ 35 %
• Temperature Resistance: up to 1093°C

⭐ Features

• Superior galling resistance – significantly reduces friction between components.
• High corrosion resistance – withstands exposure to acids and salts.
• Heat resistance – maintains strength at high temperatures.
• Excellent weldability – easily joins using various welding methods.
• Versatility – suitable for demanding industrial applications.

Nitronic 60 Grade Delivery Forms