| Application: | Industrial |
|---|---|
| Standard: | GB, ASTM |
| Purity: | >99.5% |
| Alloy: | Alloy |
| Powder: | Not Powder |
| Transport Package: | Wooden |
| Customization: |
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Audited Supplier HastelloyC is a high temperature and corrosion resistant alloy. The alloy contains a large amount of Cr, Mo and other elements, and has a single-phase austenite structure.
Introduction
Corrosion resistant alloy with many excellent properties, good resistance to oxidative and moderately reducing corrosion.
HastelloyC
Corrosion resistant alloy with many excellent properties, good resistance to oxidative and moderately reducing corrosion.
It has excellent resistance to stress corrosion cracking and good resistance to local clothing, and has satisfactory corrosion resistance in many chemical process media, including highly corrosive inorganic acid solutions, chlorine gas and various media containing chlorides, drying Chlorine, formic acid and acetic acid, seawater and brine, etc.
HastelloyC similar grades
Chemical composition of HastelloyC
Typical values(Weight %)
Cr Ni Mo W C Mn P S Fe
14.5-16.5 Remain 15.0-17.0 3.0-4.5 ≤ 0.08 ≤ 1.00 ≤ 0.040 ≤ 0.030 4.0-7.0
Physical properties
Density 8.24g/cm3
Melting point 1330-1380ºC
Specific heat capacity: 0.385 103J/kg?K
Thermal conductivity: 29.3 W(m?K) (25ºC)
Elastic modulus: 210 103MPa (28ºC)
Mechanical behavior
Alloy and Condition Tensile strength Rm N/mm2 Yield Strength RP0.2N/mm2 Elongation A5%
Hastelloy C 690 310 40
Feature
1. Control the minimum content of iron and chromium to prevent the formation of β-phase Ni4Mo. 2. Excellent corrosion resistance to reducing environment. 3. Excellent resistance to medium concentration sulfuric acid and many non-oxidizing acids. 4. Good resistance to chloride reduction stress corrosion cracking (SCC). 5. Excellent corrosion resistance to various organic acids.
metallographic structure
HastelloyC has a face-centered cubic lattice structure. By controlling the iron and chromium contents to a minimum, the work brittleness is reduced and the precipitation of the Ni4Mo phase is prevented at 700-870 °C.
Corrosion resistance
The carbon and silicon content of nickel-molybdenum alloy HastelloyC is extremely low, which reduces the precipitation of carbon and other impurity phases in the welding heat-affected zone, so its weld also has sufficient corrosion resistance. Alloy Hastelloy C-2 has good corrosion resistance in reducing media, such as hydrochloric acid solutions of various temperatures and concentrations. It also has good corrosion resistance in medium concentration sulfuric acid solution (or containing a certain amount of chloride ions). It can also be used in acetic and phosphoric environments. Alloy materials have the best corrosion resistance only when they are in suitable metallographic state and pure crystal structure.
Application field
Alloy HastelloyC has a wide range of applications in the fields of chemistry, petrochemicals, energy manufacturing and pollution control, especially in industries such as sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid.
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