Nitronic – 60

Nitronic – 60 | UNS S21800 | Alloy 218 | ASME SA 193 | AMS 5848 | ASTM A 193

Nitronic 60 (UNS S21800 /AMS 5848)

Nitronic 60, or N-60 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.

Chemical Composition

Ni Cr Mn Si C N S P Fe
Min 8.0 16.0 7.0 3.5       – 0.08        –        –           –
Max 9.0 18.0 9.0 4.5 0.10 0.18 0.03 0.06   Balance

Inventory

  • Nitronic 60 Round Bar

Common Trade Names

  • N-60 Stainless

Features

  • Wear and galling resistant alloy

Applications

  • Fasteners
  • Pins and bushings
  • Wear rails
  • Roller bearings
  • Pump components

Physical Properties

Density: 0.275 lb/inch3
Electrical Resistivity: 589 ohm circ-mil/ft

Temperature, °F 70 200 400 600 800 1000 1200 1400 1600 1800
Coefficient of Thermal Expansion, in/in°F x 10-6   – 8.8 9.2 9.6 9.8 10.0 10.3 10.5 10.7 11.0
Modulus of Elasticity,
psi X 106 STA
  – 26.2   –    –    –     –     –     –     –     –

* 70°F to indicated temperature.

Mechanical Properties

Minimum Specified Properties, ASTM A 276 Bar

Ultimate Tensile Strength, ksi    95
0.2% Yield Strength, ksi    50
Elongation, %    35
Reduction of Area, %    55
Hardness MAX, Brinell    241

Typical Tensile Properties Annealed Bar ¾ – 1″

Temperature, °F 68 200 400 600 800 1000 1200 1400 1600
Ultimate Tensile Strength, ksi 106.5 98.2 84.4 80.5 78.3 75.4 66.6 49.8 30.2
0.2% Yield Strength, ksi 56.5 44.4 32.8 29.7 29.0 28.0 28.1 25.3 16.4
Elongation, 2% 61.7 63.3 64.0 59.6 65.5 52.2 48.2 47.1 72.8

Specifications

AMS 5848
UNS S21800
ASME SA 193, ASME SA 479
ASTM A 193, ASTM A 193 Class 1C, ASTM A 276, ASTM A 479

 

© FountainHead Alloys 1996