Nitronic 60 (UNS S21800)
Nitronic 60 (UNS S21800) is known for its excellent galling resistance, even at elevated temperatures. The additions of 4% silicon and 8% manganese inhibit wear, galling, and fretting. It is commonly used for various fasteners and pins that require strength and resistance to galling. It maintains decent strength up to temperatures of 1800°F and has oxidation resistance similar to that of 309 stainless steel. The general corrosion resistance is between that of 304 and 316 stainless steel.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| Nitronic 60 | – | – | Alloy 218 | S21800 | N-60 | – | – | – | – | – |
Chemical Composition, %
| Alloy | C | Si | Mn | P | S | Cr | Ni | Mo | N | Fe |
| Nitronic 60 | ≤0.10 | 3.5-4.5 | 7.0-9.0 | ≤0.040 | ≤0.030 | 16.0-18.0 | 8.0-9.0 | ≤0.75 | 0.08-0.18 | Bal |
Typical Physical and Mechanical Properties (RT, Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.0 | 1350-1380 | ≥655 | ≥345 | ≥35 | / |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | ASTM A276, ASTM A314, ASTM A479, ASTM A580, AMS 5848 |
| Plate, Sheet and Strip | ASTM A240 |
| Pipe and Tube | – |
| Welding Product | A5.9 ER218 |
| Others | ASTM A193, ASTM A194, ASTM A351, ASTM A743 |
Features
- Anti galling
- Wear resistant
Applications
- Valve Stems
- Pins
- Brushes
- Roller bearings
- Pump shafts and rings
- Thread inserts
- Fasteners
