Hastelloy C-4, also known as Alloy C-4, with the UNS designation N06455 and W. Nr. 2.4610, is a nickel-chromium-molybdenum alloy with exceptional resistance to a wide range of aggressive chemicals, including hot sulfuric acid, hydrochloric acid, and other strong corrosive media. It also offers good resistance to stress corrosion cracking and oxidizing atmospheres. Hastelloy C-4 is particularly well-suited for use in environments where the combination of high temperature and corrosive conditions is present. This alloy is commonly used in chemical processing, pharmaceutical, and petrochemical industries, as well as in pollution control and other applications requiring high resistance to corrosion.
Whatsapp:
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sales@cocessalloys.comChemical Composition
|
Nickel (Ni) |
Balance |
|
Chromium (Cr) |
14-18% |
|
Molybdenum (Mo) |
14-17% |
|
Iron (Fe) |
3.0% max. |
|
Cobalt (Co) |
2.0% max. |
|
NCarbon (C) |
0.015% max. |
|
Manganese (Mn) |
1% max |
|
Sulfur (S) |
0.03% max. |
|
Silicon (Si) |
0.08% max. |
|
Phosphorus (P) |
0.04% max. |
|
Titanium (Ti) |
0.7% max. |
Physical Properties
|
Density |
8.6 g/ cm³ at 20 °C (537 lb/ft³ at 68 °F) |
|
Melting Range |
1,335-1,380 °C (2,430-2,520 °F) |
Mechanical Properties
|
Temperature |
Yield strength |
Yield strength |
Tensile strength |
Elongation at fracture |
||||
|
Rp 0.2 |
Rp 1.0 |
Rm |
A |
|||||
|
°C |
°F |
MPa |
ksi |
MPa |
ksi |
MPa |
ksi |
% |
|
20 |
68 |
300 |
43.5 |
330 |
47.9 |
700-900 |
102-131 |
40 |
Hastelloy C-4, known for its exceptional corrosion resistance, finds typical applications in various industries. Some of the typical applications of Hastelloy C-4 include:
1. Chemical processing equipment: Hastelloy C-4 is used in the construction of reactors, agitators, and other equipment that comes into contact with corrosive chemicals such as sulfuric acid, hydrochloric acid, and acetic acid.
2. Petrochemical industry: It is utilized in processes involving aggressive chemicals and high-temperature environments, such as in the production of petrochemicals and refining operations.
3. Pharmaceutical industry: Hastelloy C-4 is employed in pharmaceutical manufacturing equipment where resistance to a wide range of chemicals is required.
4. Pollution control: The alloy is used in pollution control equipment, including scrubbers and chemical processing units, where resistance to aggressive environments is essential.
5. Aerospace and marine applications: Hastelloy C-4 is also used in applications where resistance to corrosion in harsh environments, such as marine and aerospace components, is necessary.
Specifications for Hastelloy C-4 include the following:
|
Bar and Rod |
Seamless Pipe and Tube |
Welded Pipe and Tube |
Plate, Sheet, and Strip |
Fittings |
|
ASTM B 574/ASME SB 574 |
ASTM B 622 / ASME SB 622 |
ASTM B 626 /ASME SB 626, ASTM B 619 / ASME SB 619 |
ASTM B 575/ASME SB 575 |
ASTM B 366/ASME SB 366 |
Standard product forms of Hastelloy C-4 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at sales@cocessalloys.com for full information.
