Hastelloy C-276 / W. Nr. 2.4819 / Nimo16cr15W (Germany) / Nc17D (France) / Ns3304 / Nickel-Based Alloy Resistant to High Temperature and Corrosion / Ns334 /

NS334 is a nickel-based alloy, which is resistant to high temperature and corrosion.

NS334 corresponding grades: Hastelloy C-276, W.Nr.2.4819 NiMo16Cr15W (Germany) NC17D (France)

Overview of characteristics and application areas:

The alloy has excellent corrosion resistance to most corrosive media in both oxidized and reduced states.

Excellent resistance to pitting corrosion, crevice corrosion and stress corrosion cracking. Alloys are suitable for various chemical process industries containing oxidizing and reducing media.

The higher molybdenum and chromium contents make the alloy resistant to chloride ions, and the tungsten element further improves its corrosion resistance.

Hastelloy C-276 is one of only a few materials resistant to corrosion in wet chlorine, hypochlorite, and chlorine dioxide solutions. iron and copper chloride).

NS3304 (NS334)

NS3304 (NS334) is a solid solution material, reinforced nickel-molybdenum-chromium alloy With a small amount of tungsten, NS3304 (NS334) alloy cannot be hardened by heat treatment, but can be hardened by cold working using various means.

NS3304 (NS334) is a tungsten-containing nickel-chromium-molybdenum alloy with an extremely low silicon carbon content and is considered a universal corrosion-resistant alloy.

The alloy has the following characteristics:

In the state of oxidation and reduction, it has excellent corrosion resistance to most corrosive media.

It has excellent resistance to pitting corrosion, crevice corrosion and stress corrosion.

The higher content of molybdenum and chromium makes the alloy resistant to chloride ion corrosion, and the tungsten element further improves the corrosion resistance. At the same time, NS3304 (NS334) alloy is one of the only materials that are resistant to the corrosion of wet chlorine gas, hypochlorite and chlorine dioxide solutions. of corrosion resistance. It is suitable for sulfuric acid solutions of various concentrations and is one of the few materials that can be used in hot concentrated sulfuric acid solutions.

Chemical Composition:

C:  ≤ 0.02

Cr: 14.50-16.50

Ni: Balance

V: ≤ 0.35

Fe: 4.0-7.0

Co:   ≤ 2.5

Mn:   ≤ 1.0

Si:   ≤ 0.08

P:   ≤ 0.04

S:   ≤ 0.03

Mo: 15.0-17.0

W: 3.0-4.5

NS3304 (NS334) physical properties:

Density: 8.89g/cm3

Elastic modulus: 2005.5KN/mm2

Hardness≤100(HRB)

Melting point: 1323-1371ºC

Thermal conductivity: 11.1 W (m.k)

Thermal expansion coefficient: (25-100ºC): 11.2μm/mºC

Working temperature: -200-+400ºC



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