Nitronic 60 / Alloy 218 – Properties, Applications and Technical Data
Nitronic 60, also known as Alloy 218, is an austenitic stainless steel developed to combine good corrosion resistance with superior resistance to wear, galling and metal-to-metal friction. The material is used where traditional stainless steels risk seizing or cutting under load.
Unlike, for example, 304 and 316, Nitronic 60 is specifically optimized to minimize galling without compromising toughness or corrosion resistance.
Properties of Nitronic 60
Nitronic 60 (UNS S21800 / Werkstoffnr 1.3964) is alloyed with silicon and manganese to improve wear resistance and galling resistance. The material offers significantly better metal-to-metal performance than standard austenitic grades.
The alloy maintains a stable austenitic structure, good ductility and performs well in moderately corrosive environments and at elevated temperatures.
Type: Austenitic stainless steel with improved wear and galling resistance
Alloy: Fe-Cr-Ni-Mn-Si (Nitronic 60 / Alloy 218)
Structure: Austenitic
Designations: Nitronic 60, Alloy 218, UNS S21800
Standards: AMS 5848, ASME SA 193, ASTM A193
Advantages
- Exceptional resistance to galling and metal-to-metal wear
- Higher wear resistance than 304 and 316
- Good corrosion resistance
- High strength compared to standard austenitic steels
- Good toughness and formability
Limitations
- Lower corrosion resistance than high-alloy nickel alloys
- Not intended for extremely aggressive chemical environments
- Can be more demanding to machine than standard stainless
Typical applications
Valves & Pumps
Seats, shafts and components where galling can otherwise occur.
Bolts & Fasteners
High-strength components according to, for example, ASTM A193 and ASME SA 193.
Industrial equipment
Couplings, sliding surfaces and machine parts exposed to friction.
Marine & Offshore
Components with combined requirements for wear resistance and corrosion resistance.
Corrosion resistance
Nitronic 60 offers good resistance to general corrosion and performs well in many chloride environments. The material is primarily developed to resist galling and wear rather than extreme chemical corrosion.
Environments where Nitronic 60 performs well
- Applications with metal-to-metal contact
- Moderately corrosive industrial environments
- Highly loaded fasteners
- Environments where galling is a known problem
Environments to avoid
- Highly aggressive acids and strongly reducing environments
- Applications where high-alloy nickel alloys are required
Technical data (annealed condition)
| Yield strength (0.2%) |
~379–415 MPa |
| Tensile strength |
~655–758 MPa |
| Elongation at break |
~30–40% |
| Density |
~7.8 g/cm³ |
| Modulus of elasticity |
~193 GPa |
| Hardness |
~HB 190–220 |
| Recommended maximum temperature |
≤870°C |
| Weldability |
Good – correct method selection recommended |
With a global network of reliable suppliers, we offer customized solutions and fast access to the right special materials for your needs.
Contact us if you need technical advice or a quote – we will help you find the right material for your application.
Buy Nitronic 60 from HARALD PIHL – your specialist in wear and corrosion resistant materials with global delivery.
Our strengths
- ISO 9001 and AS9120 certified quality management
- Full traceability according to EN 10204 3.1
- Materials according to ASTM, ASME, AMS and international standards
- Cutting and adaptation according to drawing
- Fast global delivery from Europe