HastelloyC4
Material designation: Hastelloy C-4
US grade: UNS N06455
German grade: W.Nr.2.4610
I. Overview of Hastelloy C-4(N06455):
Hastelloy C-4（N06455）is an austenitic low carbon nickel-molybdenum-chromiumalloy. The main difference between Nicrofer 6616hMo and other early-developedalloys with similar chemical composition is the low carbon, silicon, iron, andtungsten content. Such a chemical composition makes it exhibit excellentstability at 650-1040 ° C, and improves the ability to resist intergranularcorrosion, so that avoid edge line corrosion sensitivity and weld heat affectedzone corrosion under appropriate manufacturing conditions.
1. Main features:
(1) Excellent corrosion resistance to mostcorrosive media, especially under reduced conditions.
(2) Excellent resistance to local corrosion inhalides.
II. Chemical composition: %
C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
0.09 | 0.5 | 1 | 0.035 | 0.03 | 14.5-17.5 | Balance | 14.0-17.0 | - |
Other | N≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Nb≤ |
- | - | 0.7 | 3 | 2 | - | - | - |
III. Physical properties:
(1) Density: ρ = 8.6g / cm3
(2) Melting temperature range: 1335 ～ 1380℃.
Temperature ( °C ) | Specific heat capacity J / Kg K | Thermal conductivity W / m K | Resistivity μΩcm | Modulus of elasticity KN / mm2 | Coefficient of expansion 10 -6 / K |
0 | 406 |
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20 | 408 | 10.1 | 124 | 211 |
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93 |
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100 | 426 | 11.4 | 125 | 207 | 10.9 |
200 | 448 | 13.2 | 126 | 202 | 11.9 |
204 |
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300 | 465 | 15 | 127 | 195 | 12.5 |
316 |
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400 | 477 | 16.7 | 128 | 188 | 12.9 |
427 |
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500 | 490 | 18.4 | 129 | 181 | 13.2 |
538 |
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600 | 502 | 20.5 | 132 | 175 | 13.6 |
649 |
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700 | 512 | 22.6 | 135 | 168 | 14 |
760 |
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800 | 522 | 24.8 | 138 | 158 | 14.5 |
871 |
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900 |
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| 149 | 15.1 |
982 |
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1000 |
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| 138 | 15.9 |
IV. Application:
Hastelloy C-4 is widely used in most chemicalfields and high temperature environments.
Typical application areas: flue gasdesulfurization systems, pickling and acid regeneration plants, acetic acid andagricultural chemicals production, titanium dioxide production (chlorinemethod), electrolytic plating, etc.
V. Specifications and Ex-factory status:
1. Classification:We can supply in form ofHastelloy C-4（N06455）seamless pipes, steel plates, roundsteel, forgings, flanges, rings, welded pipes, steel strips, wire andsupporting welding materials.
2. Ex-factory status: Seamless Tube: solidsolution + acid white, length can be fixed; Plate: solid solution, pickling,trimming; Welded Tube: solid solution acid white + RT% flaw detection; Forging:annealing + turning; the bar is delivered in the state of forging, surfacepolishing or lapping; the strip is delivered after cold rolling, solid solutionsoftening, and descaling; the wire is solid-dissolved and pickled in a disc orstraight strip, solid solution straight polished.
