HASTELLOYC4Ndi aloyi wopangidwa ndi nickel, chromium, ndi molybdenum. Amaonedwa kuti ndi aloyi wogwiritsidwa ntchito kwambiri polimbana ndi dzimbiri. Aloyi iyi imasonyeza kukana kupangika kwa ma precipitates a tirigu akamatenthedwa ndi kuwotcherera, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'njira zosiyanasiyana za mankhwala pamene ikuwotcherera. Kuphatikiza apo, Alloy C4 imatsutsa kwambiri ku dzenje, kusweka kwa stress-corrosion, ndi mpweya wowonjezera kutentha mpaka 1900°F. Ili ndi kukana kwakukulu kumadera osiyanasiyana a mankhwala.
NTCHITO:
1. Makampani opanga mapepala: Zogaya ndi zomera zoyeretsera.
2. Malo okhala mpweya woipa: Zinthu zomwe zimakhudzidwa ndi mpweya woipa.
3. Malo oyeretsera mpweya wa flue-gas: Zipangizo zomwe zimagwiritsidwa ntchito m'malo oyeretsera mpweya wa flue-gas.
4. Malo okhala ndi asidi wa sulfuriki: Zotulutsa mpweya, zosinthira kutentha, zosefera, ndi zosakaniza zomwe zimagwiritsidwa ntchito m'malo okhala ndi asidi wa sulfuriki.
5. Ma reactor a sulfuric acid: Zipangizo zomwe zimagwiritsidwa ntchito mu ma reactor a sulfuric acid.
6. Njira ya organic chloride: Zipangizo zomwe zimagwiritsidwa ntchito mu njira ya organic chloride.
7. Njira zoyendetsera zinthu za Halide kapena asidi: Zipangizo zomwe zimagwiritsidwa ntchito m'njira zomwe zimagwiritsa ntchito zinthu za halide kapena asidi.
| Giredi | C276 | C22 | C4 | B3 | N | ||
| Mankhwala Kapangidwe kake (%) | C | ≤0.01 | ≤0.015 | ≤0.015 | ≤0.02 | ≤0.01 | 0.04-0.08 |
| Mn | ≤1 | ≤0.5 | ≤1 | ≤1 | ≤3 | ≤1 | |
| Fe | 4-7 | 2-6 | ≤3 | ≤2 | ≤1.5 | ≤5 | |
| P | ≤0.04 | ≤0.02 | ≤0.04 | ≤0.04 | – | ≤0.015 | |
| S | ≤0.03 | ≤0.02 | ≤0.03 | ≤0.03 | – | ≤0.02 | |
| Si | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.1 | ≤0.1 | ≤1 | |
| Ni | kupuma | kupuma | kupuma | kupuma | ≥65 | kupuma | |
| Co | ≤2.5 | ≤2.5 | ≤2 | ≤1 | ≤3 | ≤0.2 | |
| Ti+Cu | – | – | ≤0.7 | – | ≤0.4 | ≤0.35 | |
| Al+Ti | – | – | – | – | ≤0.5 | ≤0.5 | |
| Cr | 14.5-16.5 | 20-22.5 | 14-18 | ≤1 | ≤1.5 | 6-8 | |
| Mo | 15-17 | 12.5-14.5 | 14-17 | 26-30 | ≤28.5 | 15-18 | |
| B | – | – | – | – | – | ≤0.01 | |
| W | 3-4.5 | 2.5-3.5 | – | – | ≤3 | ≤0.5 | |
| V | ≤0.35 | ≤0.35 | – | 0.2-0.4 | – | ≤0.5 | |
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