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Incoloy 330

Designated as UNS N08330 or DIN W.Nr. 1.4886, Incoloy 330 (also known as “Alloy 330”) is an iron-nickel-chromium alloy with deliberately controlled addition of silicon to improve its oxidation resistance. It has a solid solution composition and is not hardenable by heat treatment. The high nickel and chromium contents provide excellent resistance to oxidation and carburization. Alloy 330 has very good high-temperature strength and corrosion resistance, as well as excellent workability and weldability. It is mainly used for industrial heating furnaces, muffles, flare tips, alloy gridss, bar baskets, gas turbine components, boiler fixtures, and other high-temperature components.

ASTM B535 UNS N08330 seamless pipes, Incoloy Alloy 330.

ASTM B535 UNS N08330 seamless pipes after preliminary rolling, 219.1mm(O.D)x13.6mm(W.T), Incoloy Alloy 330.

1. Chemical Composition Requirements

The Chemical Composition of Incoloy 330, %
Nickel34.0-37.0
Chromium17.0-20.0
IronBalance
Carbon≤0.08
Silicon0.75-1.50
Manganese≤2.00
Phosphorus≤0.030
Sulfur≤0.030

2. Physical Properties of Incoloy 330

DensityMelting RangeSpecific HeatPermeability
g/cm3lb/in3°F°CJ/kg.°C@ 200 oersteds
8.080.2922520-25901380-14204601.02

3. Mechnaical Properties of Incoloy 330

Incoloy Alloy 330 forged fittings: 90° elbows

Incoloy Alloy 330 forged fittings: 90° elbows, 3000#, manufactured to ASME B16.11

Tensile StrengthYield StrengthElongation
MpaksiMpaksi%
552-62180-90221-29032-4235-45

4. Product Forms and Standards

Product FormStandard
Bars and shapesASTM B511
Billets and barsASTM B512
Seamless pipes and tubesASTM B535, B829
Weld pipes and tubesASTM B546, B710, B739
Plates, sheets and stripsASTM B536
Welded fittingsASTM B366
ForgingSAE AMS 5716

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