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Hastelloy C-276 Tungsten-containing nickel-chromium-molybdenum alloy
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Hastelloy C-276 Features and Applications Overview:
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The alloy has excellent corrosion resistance to most corrosive media in the oxidized and reduced state. Excellent resistance to pitting, crevice corrosion and stress corrosion cracking. The alloy is suitable for a wide range of chemical process industries that contain oxidizing and reducing media. Higher molybdenum, chromium content of the alloy can be resistant to chloride ion erosion, tungsten elements also further improve its corrosion resistance. Hastelloy C-276 is one of only a few materials that can be resistant to moisture chlorine, hypochlorite and chlorine dioxide solutions that have significant resistance to high concentrations of chloride salts (such as chlorinated Iron and copper chloride).
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Hastelloy C-276 Similar brand:
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W.Nr.2.4819 NiMo16Cr15W (Germany) NC17D (France)
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Hastelloy C-276 chemical composition:
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Alloy
Grade
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%
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Ni
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Cr
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Fe
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Mo
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W
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Co
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C
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Mn
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Si
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S
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P
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V
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Ti
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Hastelloy C-276
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Min
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Margin
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15.0
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4.0
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15.0
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3.0
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0.1
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Max
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16.5
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7.0
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17.0
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4.5
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2.5
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0.01
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1.0
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0.08
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0.001
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0.015
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0.3
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Hastelloy C-276 Physical properties:
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Density
g/cm3
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Melting point
℃
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Thermal conductivity
λ/(W/m•℃)
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Specific heat capacity
J/kg•℃
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Elastic Modulus
GPa
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Shear modulus
GPa
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Resistivity
μΩ•m
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Poisson's ratio
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Linear expansion coefficient
a/10-6℃-1
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8.9
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1325
1370
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10.2(100℃)
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407
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208
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79
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1.25
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11.7(20~100℃)
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Hastelloy C-276 Mechanical properties: (at 20 ℃ to detect the minimum mechanical properties)
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Heat treatment methods
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Tensile strengthσb/MPa
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Yield Strengthσp0.2/MPa
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Elongationσ5 /%
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Brinell hardness HBS
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Solution treatment
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690
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283
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40
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Hastelloy C-276 Production standards:
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Standard
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Bar
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Forgings
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Plate (with) material
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Wire
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Pipe
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American Society for Testing and Materials
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ASTM B574
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ASTM B564
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ASTM B575
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ASTM B622
ASTM B619
ASTM B626
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American Aerospace Materials Technical Specification
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American Society of Mechanical Engineers
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ASME SB574
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ASME SB564
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ASME SB575
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ASTM SB622
ASTM SB619
ASTM SB626
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Hastelloy C-276 Metallography structure:
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Alloy is a face-centered cubic lattice structure.
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Hastelloy C-276 Process performance and requirements:
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1. The lower the sulfur content of the hot processed fuel, the better the sulfur content in natural gas should be less than 0.1% and the sulfur content in heavy oil should be less than 0.5%.
2, alloy thermal processing temperature range 1200 ℃ ~ 950 ℃, the cooling mode is water cooling or rapid air cooling.
3, Suitable for welding with any traditional welding process, such as tungsten electrode inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal inert gas shielded welding, melting inert gas shielded welding.
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