Alloy 330

Common Trade Names:
Incoloy 330; Alloy 330, RA330, Nicrofer 3718

Incoloy alloy 330 (UNS N08330; W. Nr. 1.4886) is an austenitic alloy with good high-temperature strength and corrosion resistance. It has a solid solution composition and is not hardenable by heat treatment. Its high nickel and chromium provide good resistance to oxidation and carburization. Its oxidation resistance is enhanced by the silicon content. The alloy's strength and oxidation resistance at elevated temperatures make it a useful material for industrial heating furnaces; for muffles, retorts, conveyor systems, baskets and boxes, and various fixtures.

Available Product Forms:
Tube, sheet, strip, plate, round bar, forging stock, hexagon, wire and wire rod

Specifications
Incoloy alloy 330 is designated as UNS N08330 and W. Nr. 1.4886.

Bars and Shapes:  ASTM B 511, ASME SB 511

Billets and Bars:  ASTM B 512, ASME SB 512

Pipe and tube: ASTM B 535; ASME SB 535, ASTM B 546; ASME SB 546, ASTM B 710;  ASME SB 710, ASTM B739; ASME SB 739, ASTM B 829/ASME SB 829.

Plate. Sheet and Strip: ASTM B 536, ASME SB 536, SAE AMS 5592

Bars, Wire, Forgings and Rings: SAE AMS 5716

Other: ASTM B 366/ASME SB 366

Chemical Composition

Nickel ..........................................................................34.0-37.0
Chromium....................................................................17.0-20.0
Iron ...............................................................................Balance
Carbon........................................................................0.08 max.
Silicon..........................................................................0.75-1.50
Manganese ...................................................................2.0 max.
Phosphorus ..............................................................0.030 max.
Sulfur ........................................................................0.030 max.

Applications of 330 Stainless
Furnace containers-carburizing, carbonitriding, annealing malleablizing
Muffles, retorts
Bar frame heat treating baskets
Quenching fixtures
Radiant tubes
Salt pots
Furnace fans and shafts
Conveyors
Tube hangers for crude oil heaters adn steam boilers
Heat exchangers
Flares