600
Product Information
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600 alloy is a nickel-base alloy with excellent carburization, and good oxidation resistance at elevated temperatures. The alloy has long been used in the heat treating industry for many of the same applications as RA330®. 600 alloy has useful resistance to dry Cl2 and HCl gases at moderately elevated temperatures. 600 alloy is not suggested for use at red heat when sulfur is present due to elevated nickel quantities.
Grades 200 and 201 nickel are normally preferred for handling concentrated, high temperature caustic. However, when sulfur compounds are present as well, or for ammonium hydroxide service, 600 alloy is suggested. 600 alloy is subject to stress corrosion cracking in hot, concentrated caustic alkalies. To avoid stress corrosion cracking, the 600 alloy fabrication should be fully stress relieved prior to use. A minimum treatment of 1650°F for 1 hour is suggested, but 1800-1850°F for 1 hour preferred.
Specifications
UNS N06600, Werkstoff 2.4816, EN 2.4816
AMS 5540, AMS 5665
ASTM B 166, ASTM B 167
ASME SB-166, ASME SB-167, ASME SB-168
Inventory
Alloy 600 Plate, Alloy 600 Sheet, Alloy 600 Coil, Alloy 600 Bar, Alloy 600 Welding Products
Common Trade Names
Alloy 600, Inconel 600, Nickel 600
Chemical Composition, %
| Ni | Cr | C | Mn | Cu | Si | S | Fe | |
|---|---|---|---|---|---|---|---|---|
| MIN | 72.00 | 14.00 | -- | -- | -- | -- | -- | 6.00 |
| MAX | 17.00 | 0.15 | 1.00 | 0.50 | 0.50 | 0.015 | 10.00 |
*ASTM specification 0.20 max C.
Features
- Virtually immune to chloride ion stress corrosion cracking
- Good caustic corrosion resistance
- Resistant to dry Cl2 to about 1000°F
- Oxidation resistance to 2000°F
- Carburization resistance
Applications
- Heat treating muffles and retorts
- Vacuum furnace fixtures
- Chlorination equipment to 1000°F
- Titanium dioxide plants
Physical Properties
Density: 0.304 lb/in3
Melting Point: 2470- 2575°F
Poisson's Ratio: 0.29
Electrical Resistivity: 620 Ohm-circ mil/ft
| Temperature, °F | 70 | 1000 | 1200 | 1400 | 1600 | 2000 |
| Coefficient* of Thermal Expansion, in/in°F x 10-6 | - | 8.4 | 8.6 | 8.7 | 9.1 | 9.3 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F |
8.6 | 13.2 | 14.3 | 13.0 | 16.7 | - |
| Modulus of Elasticity, Dynamic psi x 106 | 30.0 | 25.6 | 24.5 | 23.6 | 22.2 | 20.4 |
* 70°F to indicated temperature.
Mechanical Properties
Representative Tensile Properties
| Temperature,°F | 70 | 1000 | 1200 | 1400 | 1600 | 1800 |
| Ultimate Tensile Strength, ksi | 93 | 84 | 65 | 27.5 | 15 | 7.5 |
| 0.2% Yield Strength, ksi | 37 | 28.5 | 26.5 | 17 | 9.0 | 4.0 |
| Charpy Impact V-notch, ft-lbs | 45 | 47 | 39 | 46 | 80 | 118 |
Static Corrosion in Molten Caustic Soda
Corrosion Rate, Mils Per Year
| Temperature, °F | 750 | 932 | 1076 | 1256 |
| Alloy 201 | 0.9 | 1.3 | 2.5 | 37.8 |
| Alloy 400 | 1.8 | 5.1 | 17.6 | - |
| Alloy 600 | 1.1 | 2.4 | 5.1 | 66.4 |
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