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Hastelloy C 4 Low Carbon Nickel Molybdenum Chromium Alloy - China

price: contact company for price

Hastelloy C-4(UNS NO6455) Features and applications

overview: The alloy is an austenitic low-carbon nickel-molybdenum-

chromium alloy. The main difference between Nicrofer 6616 hMo and early

developed alloy of similar chemical compositions is the low content of

carbon, silicon, iron and tungsten. Such a chemical composition makes

excellent stability at 650-1040°C, improves resistance to intergranular

corrosion, and under appropriate manufacturing conditions avoids the

corrosion of the edge line and of the weld heat affected zone. The alloy

is applied in flue gas desulfurization system, pickling and acid

regeneration plant, acetic acid and agrochemicals production, titanium

dioxide production (chlorine), electrolytic plating, etc. Hastelloy C-

4's similar grade: NS335(China) W.Nr.2.4610 NiMo16Cr16Ti(Germany)

Chemical composition, % (GB/T14992-2005)

Nickel........................................balance Chromium..................................14.5-

17.5 Iron.............................................3.0 max Molybdenum...............................14.0-

17.0 Cobalt.........................................2.0 max

Carbon........................................0.009 max

Manganese..................................1.0 max

Silicon..........................................0.05 max

Sulfur...........................................0.01 max

Phosphorus...................................0.02 max

Titanium..........................................0.7 max physical

properties Density, g/cm3 ..........................8.6 Melting

Range, °C................1335-1380 Thermal conductivity,

λ/(W/m•°C), at 100°C .......10.1 Specific heat,

J/kg•°C....................408 Elastic modulus,

GPa.....................211 Electrical resistivity,

μΩ•m.............1.24 Coefficient of linear expansion, a/10-6°C-

1, at 20-100°C.............10.9 mechanical properties (the

minimum value detected at room temperature) Tensile strength,

σb/MPa....................690 Yield

strength, σp0.2/MPa..............275 Elongation, σ5

/%...................................40 The way of heat treatment is

solution treatment

Available products and specifications:

Bar: ASTM B574, ASME SB574

Forging: ASTM B336, ASME SB336

Plate/Strip: ASTM B575, ASME SB575

Pipe: ASTM B622, ASTM B619, ASTM B626, ASME SB622, ASME SB619, ASME626

The metallurgical structure of Hastelloy C-4:

Hastelloy C-4 is of the face-centered cubic lattice structure. Its chemical compositions ensure the stability and the allergy resistance of metallurgical structure.

The process performance and requirements of Hastelloy C-4:

1, The alloy cannot contact sulfur, phosphorus, lead and other low melting point metal during the heat treatment, otherwise the alloy becomes brittle. It should be noted to clear some contaminants such as marking and temperature-indicating paints, crayons, lubricating oil, and fuel. The content of sulfur in fuel should be kept as low as possible. The sulfur content of the gas should be less than 0.1%, and in heavy oil should be less than 0.5%. Electric furnace heating is a better choice, because the electric furnace's precise temperature control and the clean furnace gas. If the furnace gas is pure enough, gas furnace can be an alternate.

2, The thermal processing temperature range of the alloy is 1080°C~900°C. The cooling method is water-cooling or other rapid cooling. To ensure the best performance of anti-corrosion, solution heat treatment should be carried out after the thermal processing.

Hastelloy C 4 Low Carbon Nickel Molybdenum Chromium Alloy

Please inquiry for your need now


Company Contact:


  • Phone: 8602169925078

  • Address: 1355#,Chengbei road, Jiading District, Shanghai, Shanghai, China

  • Email: Email


Published date: October 18, 2012 -

  • Business Description: involved in international trade import export of goods, products, and services

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